Danh mục các Bullentin của ICOLD

HỘI ĐẬP LỚN VÀ PHÁT TRIỂN NGUỒN NƯỚC VIỆT NAM (VNCOLD)

THỐNG KÊ DANH MỤC ẤN PHẨM CỦA ICOLD (ICOLD’S LIST OF BULLENTINS)

(Cập nhật đến tháng 11/2024)

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Bulletin 58,

1987- Spillways for dams

The basic design of spillways involves a variety of complex problems and, without pretending to be a comprehensive state-of-art review, this report does summarize the main considerations arising from modern dam projects.

Wherever possible, each chapter has examples of typical dams currently in operation throughout the world where sufficient information is available from the enquiry or other sources.

Bulletin 59, 

1988- Dam safety - Guidelines

Several dam incidents with severe consequences during recent years had given rise to general concern about the safety of dams, and indicated the necessity for a formal safety approach.

The height of new dams and the volume of new reservoirs is increasing, while many older dams are approaching an age at which material deterioration and decreasing operational reliability may dictate some repair and upgrading.

An ever increasing number of dams is being built in countries with little or no tradition and experience in dam engineering. The formalization of safety considerations and the issuance of summarized safety requirement would be part of the necessary transfer of technological know-how to these countries.

Bulletin 60

1989- Dam monitoring - General considerations

One of this bulletin’s tasks was to bring bulletins n° 21 and 23 up to date and merge them into a single ICOLD bulletin. The whole committee agreed that:

The underlying principles and basic philosophy were clearly and cogently stated in these earlier bulletins and provided a good foundation for those needing to involve themselves in dam monitoring

Some details needed revision (only minor points, considering they were first published twenty years ago)

The sections on optical survey methods could be cut down, both bulletins giving them much space with overabundant details. Topographic survey is now losing favour for dam monitoring purposes and it would seem sufficient simply to remind readers of a few basic ideas and refer to the abundant literature on the subject.

 

Bulletin 61

1988- Dam design criteria - Philosophy of choice

The initial approach was to conduct a survey of member countries of ICOLD and to ascertain the currently available practice. This report attempts to present our findings and is the result of much debate and controversy.

Attempts of including quantitative stochastic and probabilistic reliability approaches were made but the available data did not seem to warrant such an approach.

Bulletin 62

1989- Inspection of dams after earthquakes -Guidelines

An earthquake may cause failure of a dam or cause severe damage to the dam and its appurtenant structures. In the event of damage, immediate action may be necessary to prevent further weakening of the structure. Accordingly, all dam operators should be carefully instructed in the procedures to be followed if an earthquake should occur that produces motions of intensity sufficient to possibly cause damage.

The inspections are most meaningful if the procedures are prepared for individual dams. The general procedures described herein may be used by professional persons conversant with the design and operation of the dam in the preparation of a set of inspection procedures for a specific dam. The procedures should list all of the features to be inspected, in an order believed to be the most important and efficient. Communication checkpoints to designed offices regarding the inspection should be a part of the plan. Aspects of the inspections are discussed below, and inspection checklists are given in the appendix to aid in preparing instructions.

Bulletin 63

1988 - New construction methods - State of the art

The objective of this report is not to carry a general review of all «New Construction Methods», but to select construction techniques which could be included in the category of new construction methods and to study the essential points of these techniques based on actual cases.

In recent years the progress of technology has become more rapid and diverse, but , in simplest terms, it can be recognized that the influence of modern technology in dam construction lies in the rationalization of the use of new construction equipment, computers, synthetic materials, etc.

Bulletin 64

1988 - Register of dam heightenings

Dam heightening is a major task in dam engineering. Several reasons may make it necessary: increased freeboard, spillway capacity, reservoir volume, etc. In every case the engineer must consider different kinds of problems.

Bulletin 65

1988 - Dams and environment - Cases histories

This bulletin presents a number of case histories. They are dams and reservoirs generally of a significant age. Thus a realistic picture is now available of the performance of each scheme related both to achievement of the main project purpose and to the various environmental impacts involved. It is intended that the reader should be able, through these descriptions, to assess the overall impact of each project in its totality on the communities and countries involved.

Bulletin 66

1988 - Dams and environment - The Zuiderzee damming

The present bulletin describes in considerable detail the experience with the Zuiderzee project in the Netherland on which there has been much effort on the environmental front, with many lessons learned.

Bulletin 67 

1988 - Sedimentation control of reservoirs - Guidelines

The terms of Reference of the Committee were as follow:

Methods of predicting alluvial deposits as regards quality and quantity.

Observation methods and comparison with redictions.

Means of protection to extend the life of reservoirs: intake and scouring structures, operation of reservoirs, dredging, sediment trapping.

Bulletin 68

1988 - Monitoring of dams and their foundations - State of the art

The member countries of the Committee were asked to submit state-of-the-art reports on dam and foundation monitoring in their own countries, and ten reports were finally forthcoming. Canada, not a member of the Committee, also furnished a report.

Understandably, each contribution has highlighted those activities that are considered to be either the most important in the country or technically the most advanced. From the different situations, the reader may therefore choose the one that best meets his own situations, the reader may therefore choose the one that best meets his own situation and draw useful guidance from it, knowing that what is described represents actual situations developed by technical experts in this field.

Bulletin 69

1988 - Moraine as embankment and foundation material - State of the art

If sufficiently impervious, moraine is a good foundation material with few settlement problems; it can also provide satisfactory constructional material for dam cores and homogeneous earth dams.

The bulletin describes and discusses moraine properties, in situ exploration problems, design, construction and performance during first filling and long-term operation. It is a comprehensive review of current knowledge and experience of moraine as a dam foundation and fill material. Case histories from various countries illustrate the ways it can be used.

Bulletin 70

1989 - Rockfill dams with concrete facing - State of the art

The bulletin describes design, construction and monitoring practice with practical recommendations on construction of the dam body, concrete facing and ancillary works, and foundation treatment. A full chapter is devoted to earthquake design.

Clear illustrations, references and list of existing dams are included.

Bulletin 71

1989 - Exposure of dam concrete to special aggressive waters - Guidelines

This bulletin reviews the extent to which environmental attack on dam concrete has taken place together with the nature of such attacks. It reviews what preventive measures are available against such attacks together with investigative techniques and remedial actions available once attack has occurred.

BULLENTIN 72 

1989 - Selecting seismic parameters for large dams - Guidelines

This bulletin was made:

To provide a guide for the selection of parameters to be used in the seismic design, analysis and safety evaluation of new or existing dams and their appurtenant structures.

To promote consistency in handling the earthquake aspects of dam performance evaluation among owners, designers and various organizations involved in the planning, design, construction, operation, maintenance and regulation of dams.

Bulletin 73

1989

Savings in dam construction - Comments and proposals

This bulletin reviews the opportunities for cost savings arising from appropriate dam design and construction factor.

No two dams are the same, and it is difficult to compare their cost and assess potential savings, which are often under-estimated; many dam engineers feel that they are close to the optimum. Judgements on this bulletin may thus be diverse, but it is hoped that all readers will find a few ideas towards a more cost-conscious approach, and may be stimulated to consider what may be done in the future.

Every party involved in the design and construction of a dam usually considers that needless costs are the fault of the others, but major savings are often possible in all areas, either through the direct action of each party or through a clearer definition of contract relationship, duties and powers.

Bulletin 74

1989 - Tailings dams safety - Guidelines

This guideline is essential because of the increasing numbers of large tailings dams that were being constructed around the world and the severe consequences that would result from failure. The need for such guidelines was dramatically emphasized by the failure, in 1985, near Stava in Italy, of two small tailings dams which resulted in a large loss of life and extensive property damage.

This bulletin is intended primarily for the use of the Regulatory Agencies responsible for the safety of tailings dams, both structurally and environmentally. However, it is also intended to assist the mine operator in understanding the measures that must be adopted to ensure that his tailings dam is safe, both during operation and after rehabilitation. Finally, it should also benefit those individuals or organizations involved in the design, construction, operation, and rehabilitation of tailings dams.

Bulletin 75

1989 - Roller compacted concrete for gravity dams - State of the art

Roller compacted concrete is a new technique characterized principally by its use of rollers for compaction. The resulting material is denser with a lower percentage of water than the usual dam concrete. The mix is spread in thin layers over the whole length of the dam, enabling concreting to proceed very quickly

This bulletin summarizes the information now available for a technique still in the evolutionary phase. It would therefore be wrong to attempt to force it into rigid schemes of prearranged recommendations.

It deals with roller compacted concrete for dams of the gravity type only.

 

 

Bulletin 76

1990 - Conventional methods in construction - Review

Bulletin 77

1990 - Dispersive soils in embankment dams - Review

Dispersive clays are generally poorly understood by engineers and other specialists who work on embankment dam construction. These clays may cause serious problems if they are used without adequate knowledge, and if the precautions required are not taken. It is important that dam engineers and specialists learn about the properties of these clays, especially those that require special attention during the design and construction of embankment dams.

This bulletin reviews these properties and appropriate measures to be taken, and gives valuable information for all engineers concerned with this material present in many countries.

Bulletin 78 

1991 - Watertight geomenbranes for dams - State of the art

Since that time, new and improved materials became available and the experience gained has resulted in a better understanding of their use and in advanced engineering skills in this field so that they have been used in higher dams than before.

The application of geomembranes was extended to new areas such as enhancing the water-retaining performance of other facings, repairing old gravity dams and the deteriorated upstream concrete facings of fill dams. Lastly, new ideas have been developed regarding drainage, supporting layer and protective covering and geomembranes are being considered for the upstream facings to roller compacted concrete dams.

Bulletin 79 

1991 - Alkali-aggregate reaction in concrete dams - Review and recommendations

Interest in the Alkali-Aggregate (AAR) in concrete structures has increased in recent times because of the risk for dam safety and the high cost of repairs and replacements. Though this reaction does not concern dam concrete only, one of the first structures identified as affected by AAR was the Parker Dam (USA) in 1941 and an ICOLD survey in 1985 has shown the worldwide distribution of damaged dams because of AAR

The purpose of this Bulletin is to make aware those responsible for dam safety of the AAR risk and to give recommendations for minimizing this risk at the design and construction stages and adequately treating old dams which may be affected.

 

Bulletin 80

1992 - Dam construction sites . Accident prevention - Review and recommendations

Many efforts all over the world to emphasize labour safety and health have resulted in more awareness from public opinion in occupational accidents and disease. So that it is timely to deal with these problems for dam construction sites where they are especially major issues since statistics show that risks of death are far higher during construction from occupational accidents than in operation from dam failures;

The report starts with an evaluation of accident-related losses and goes on with suggestions on methods and procedures to prevent them. It addresses more especially the Engineer, site management and contractors and all those responsible for work organization on dam construction sites.

Bulletin 81

1992- Spillways. Shockwaves and air entrainment - Review and recommendations

Spillways and bottom outlets constitute a significant percent of the total cost of major dams. Their proper design is, thus, very important from the standpoint of economy as well as safety. This bulletin, which considers the hydraulic concepts of design for high-velocity flow, aeration, cavitation and shock waves, has been prepared as a general design guideline for use of engineers engaged in the design of bottom outlets and steep spillway chutes

Bulletin 82

1992 - Selection of design flood- Current methods

The problem of the evaluation of the design flood has been passionately debated for years: the subject is one of important and fraught with difficulty. Many failures are due to insufficient spillway capacity. Also the diversity and complexity of factors governing flood formation and size have resulted in a variety of evaluation method.

Many of these methods are reviewed in this bulletin and, what is rather new, The limits of their applicability are discussed. The bulletin is addressed more specifically t hydrologists and engineers ultimately responsible for the calculation of project design floods.

Bulletin 83 

1992 - Cost impact on future dam design - Analysis and proposals

This bulletin reviews possible changes in dam construction needed to optimize construction cost. It aims at questioning conventional wisdom and at stimulating enquiry into alternatives rather than introducing new rules or ready-made solutions for any situation.

Implementation of innovations in technology depends on reflection and cooperation between several parties. In dam engineering, these include owners, regulatory agencies, consulting engineers and contractors.

Bulletin 84 

1992 - Bituminous cores for fill dams - State of the art

This bulletin is dealing with the development of this technique during the past decade, the experience gained and progress made in the design, the construction and the knowledge of bituminous core behaviour. It offers a comprehensive synthesis of present knowledge on this type of watertight component.

Bulletin 85 

1992 - Owners, consultants and contractors - How to improve relationships

Heavy construction projects such as dam construction many times have delays and increased costs which can be directly attributed to the relationship between the various parties, i.e., the owner, consultant/designer, construction manager and contractor.

This bulletin reviews each party’s responsibilities and provides beneficial ideas on contract documents, contracting considerations, and problem avoidance and resolution, all in an effort to reduce the overall project cost and time. It addresses all the parties involved in dam projects and is intended for a very large readership.

Bulletin 86

1992 - Dams and environment -Socio-economic impacts

Bulletin 87

1992 - Improvement of existing dam monitoring - Recommendations and case histories

This bulletin provides recommendations for the improvement of the monitoring of existing dams where either a monitoring system does not exist, or it is wholly or partially obsolete, incomplete or insufficient.

Even though the basic principles remain the same, improving existing dam monitoring is a somewhat different problem from monitoring new dams, because specific problems such as logistic difficulties can arise and information on the actual past behaviour of the dam is available.

Bulletin 88

1993-  Rock foundations for dams

Significant progress has been made over the last twenty years in this field, and it has become necessary to include for these new developments in rock mechanics and discuss a few typical applications.

The subject is vast and many of the problems associated cannot yet be given a definitive answer, since there are many parameters whose values are scattered and constitutive laws for in situ rock are complex. But engineers now have the benefit of science and technology offering them a truer insight Into the physical and mechanical properties of in situ rock, and enabling them to better predict its performance as a dam foundation and treat it accordingly, and monitor it more comprehensively and accurately. The end result is greater safety for the dam/foundation complex.

Bulletin 89

1993 - Reinforced rockfill and reinforced fill for dams - State of the art

This bulletin deals with a technique, which, although not new and of such great interest, has not been extensively used in dam construction: the reinforcement of fill materials.

The bulletin describes the methods used to reinforce the natural materials of a fill dam, which have to be resistant to various conditions, but especially to overtopping. Principles are the same for fine or coarse materials, but the ways they are reinforces and react may be very different.

Bulletin 90

1993 - Dams and Environment - Geophysical impacts

This bulletin gives an overview of geophysical problems which may arise before, during or after the construction of a large dam. Among its sources it draws on a number of reports. The relevant reports and other listed references may be accessed for specific instances of problems and solutions, as the text of the bulletin is general in nature.

Bulletin 91

1993

Embankment dams. Upstream slope protection - Review and recommendations

This bulletin is a comprehensive review of the various methods used to protect the upstream slope of fill dams, with abundant examples of applications. The description is more complete in the case of materials used more frequently so reflecting the day-to-day reality. Embankment dams represent 70% of all dams now under construction, which amply reflects the importance of this bulletin.

The content should be of the greatest interest for all dam designers, contractors and owners.

Bulletin 92

1993

Rock materials for rockfill dams - Review and recommendations

This bulletin reviews the physico-mechanical properties of rockfill, specifications requirements, dam design, construction methods, settlement and deformation prediction, and performance monitoring.

This bulletin is addressed to all those involved in research on, assessment of properties, and use of rock materials for construction of rockfill dams.

Bulletin 93 

1994

Ageing of dams and appurtenant works- Review and recommendation

This bulletin contributes to a better understanding of the major ageing phenomena, to indicate appropriate methods for their detection, investigation and evaluation, and to suggest simple remedial measures. The aim is to improve the prevention, control and mitigation of ageing.

The dams used as illustrations for the various ageing phenomena were selected because the documentation of the problems was thorough and the data available were particularly relevant, or because the contributing author’s familiarity with the dams.

Bulletin 94

1994

Computer software for dams - Validation, Comments and proposals

The description of computational methods, or state-of-the-art review, would only be of temporary value, given the fast pace of new developments. On the contrary, ideas and criteria for effective « validation » of computational tools were deemed to be of more permanent value, while at the same time covering important aspects, although of primary importance, are far from obvious or simple, and moreover they are frequently given insufficient critical attention.

Bulletin 95

1994

Embankment dams - Granular filters and drains

Review and recommendations

The importance of filters and drains within the body of an earth, earth-rock, or rockfill dams must be uppermost in the mind of the embankment dam designer. Indeed, many incidents of failure or near failure can be attributed to the absence of filters and/or drains or to filter/drain protection which was not appropriate to the application. The literature within the various ICOLD Congress proceedings and other sources provides ample case histories of such incidents. Depending on the data cited, 30 to 50 percent of accidents to embankment dams have involved piping or inadequate drainage: the safety of embankment dams depends to a large degree on the proper design and construction of filter and filter/drain systems.

This bulletin is not meant to be a design manual but rather a summary of the current state of the practice.

Bulletin 96 

1994

Dams and environment - Water quality and climate

Water quality and climate

This Bulletin gives an overview of effects of reservoirs on water quality and climate. Among its sources it draws on a number of reports submitted to the 16th ICOLD Congress in San Francisco, in 1988, in response to Question 60: Reservoirs and the Environment-Experience in management and monitoring, and to further such reports submitted to the 17th ICOLD Congress in Vienna, 199, in response to Question 64: Environmental Issues in Dam Projects. The relevant reports and other listed references may be accessed for specific instances of problems and solutions, as the text of the Bulletin is general in nature.

Bulletin 97

1994

Tailings Dams - Design of drainage

Review and recommendations

This bulletin comments various recommended drainage methods for tailings dams.

The research and studies made on tailings dams behaviour led to design improved method of drainage for these dams. So successful have these methods been that even dams built upstream construction need no longer be regarded as a type that traditionally has a low factor of safety.

This new approach to starter dam avoids the formation during early deposit of tailings of a zone of low strength slimes, normally found just upstream of that dam and greatly improves stability of a potential slip surface passing through the toe of tailings dam as it approaches full height.

Bulletin 98

1995

Tailings Dams and Seismicity - Review and Recommendations

A recent USCOLD compilation of tailings dam incidents has listed 185 incidents collected worldwide, covering tailings from a wide variety of materials. This has shown that tailings dams are very susceptible to earthquake damage and those built by the upstream method have failed mainly due to slope instability and earthquake.

There is clearly a need for advice on seismic design for tailings dams and this bulletin has been prepared to show the current state-of-the-art for the design of new dams to resist earthquake forces. Of equal importance is the question of treating existing dams to make them better able to withstand earthquake shaking and this bulletin gives remedial measures for improving the safety of existing impoundments. It also gives a very comprehensive collection of references so that the reader can go back to original sources and study various methods in greater detail.

Bulletin 99

1995

Dam Failures - Statistical Analysis

Accidents in industry have always been a spur to human progress and, for many years, was even the main driving force. This is especially true in dam engineering and, for this reason, ICOLD has on three occasions instigated worldwide surveys, to collect the largest amount of information on dam accidents and/or incidents. The nineteen-seventies saw the appearance of Lessons from Dams Accidents, the eighties produced Deterioration of Dams and reservoirs, and now we have Statistical Analysis of Dam Failures.

This third effort strives to avoid duplications with earlier work, but to find responses to questions than have hitherto found no objective answer: are some dam types, or some dam heights, more prone to failure than others?

Bulletin 100

1995

Dam and environment - Ridracoli : A model achievement

This bulletin offers technical information on, and examples of impacts, and engineers’ and scientists’ suggest means for mitigating them. It describes concrete cases of projects designed and build with a view to make the dam and reservoir blend into their environment.

This bulletin continues this collection of case histories in which the combined effort of engineers, politicians and the public at large have made it possible to develop a natural resource –water- to meet a basic need, while at the same time stimulating the area’s economic and social development, and protecting and improving the natural and man-made environment.

Bulletin 101

1995

Tailings Dams. Transport. Placement. Decantation - Review and recommendations

This bulletin gives recommendations on the transportation of tailings by wet (pipes, channels) or dry means. The flow can be done by gravity, and/or with the use of pumps of which the various types are examined. The separation of the coarse elements of the waste rock, intended for the construction of the dam, uses various means: cycloning, gravitational separation on a beach after discharge by nozzles, semi-aerial methods using spraying ramps. Where the waste rock does not contain sufficient coarse material to allow construction of the dam by the above methods, the enclosure method can be used. This method is well suited to areas of high evaporation.

This bulletin presents a method for evaluating the overall hydraulic balance of a reservoir and for designing a safe outlet structure.

 

Bulletin 102

1996

Vibrations of Hydraulic Equipment for dams - Review and Recommendations

Few problems are more difficult to cope with than vibrations of hydraulic equipment. Because of the danger they impose to hydraulic equipment and the associated structures, vibrations have been the subject of extensive research for many decades and research has accelerated in recent times with the result that much more is now know about the occurrence and characteristics of dangerous vibrations. This bulletin attempts to provide the designer with understanding as well as tools that will aid in developing safe designs.

Bulletin 103

1996

Tailings Dams and Environment - Review and Recommendations

This bulletin addresses this aspect in relation to tailings dams and their retained lagoons. It considers the environmental impact assessment that must be made at the planning stage and environmental stability to be achieved during the long years of construction and the longer period after completion and rehabilitation.

Bulletin 104

1996

Monitoring of Tailings Dams - Review and Recommendations

This bulletin concentrates on the difference of approach necessary when considering the instrumentation for tailing dams. Sound advice is given about the importance of seepage measurements and the need for automation to provide continuous records, methods for measuring the position of the phreatic surface, showing the difference of approach from that with embankment dams in this, for tailing dams, vital measurement.

Bulletin 105

1996

Dams and related structures in cold climate - Design guidelines and case studies

In areas with cold climate, formation of ice and permafrost may cause damage or operational problems to dams, related structures or equipment. These problems must be considered during planning, design, construction and operation of hydraulic projects in cold climate. The purpose of this bulletin is to review these problems and to present preventive or remedial measures against ice and permafrost action.

Bulletin 106

1996

A guide to Tailings Dams and impoundments - Design, construction, use and rehabilitation

Design, construction, use and rehabilitation

This bulletin discusses common problems in the disposal of tailings at mines, quarries and other industries, and identifies safe methods of designing and operating dams and impoundments.

The problems encountered at the end of operations when it becomes desirable to end tailings dam construction and it is necessary to rehabilitate the dam and its impoundment to make it permanently safe and environmentally acceptable are discussed and a final chapter describes some of the governmental regulations controlling tailings dams in some countries.

Bulletin 107

1997

Concrete dams - Control and treatment of cracks.

This bulletin addresses the causes and control of cracking in concrete, techniques for monitoring such cracks, and actions available for accommodating and repairing cracks. Guidance also is provided on how to avoid cracking in concrete dams. A series of case histories from around the world on the care and rehabilitation of dams affected by serious cracking is also included.

Bulletin 108

1997

Cost of flood control in dams - Review and recommendations

Larger floods now considered lessons from operation and failures since 30 years, wider range of possible solutions have a great impact on design of new spillways: the Bulletin is proposing relevant cost effective dispositions to guarantee safety of new dams and improve safety of existing dams; methods for river control during construction are also reviewed.

Bulletin 109

1998

Dams less than 30 m high - Cost savings and safety improvements

This bulletin is devoted to the 150 000 large or small dams 10 to 30m high; capacity of most of their reservoirs is in the range of 1 hm3 but several thousands reach dozens of hm3. Design criteria and typical designs are generally different from those of high dams. Construction methods, often focus upon economy, may increase risks and corresponding accidents have globally caused more victims than for high dams.

Based upon experience from many industrialized or non industrialized countries, the Bulletin suggests practical solution in order to:

Reduce the cost of new dams with due respect to required safety

Identify existing dams subject to serious risks and possibilities to lower those risks cheaply and quickly optimize use of reservoirs.

Bulletin 110

1998

Cost impact of rules, criteria and specifications - Review and recommendations

Review and recommendations

Bulletin 111

1998

Dam Break flood analysis - Review and recommendations

Concern about the possible failure of dams, with a flood wave routing in the valley, peaked in this century as a result of failures of several important dams such as Vajont, Malpasset, Teton and Macchu II.

The Bulletin reviews parameters and define the state of art of predicting downstream depths, extent of flooding, and velocities which would occur as a result of a failed dam and to catalog and to make recommendations for the use of such programs.

A unique review for all those involved in the assessment of dam safety and the protection of population downstream of dams.

Bulletin 112 

1998

Neotectonic and dams - Recommendations and case histories

Guidelines and case histories

Exposure of dams to active tectonic phenomena constitutes a severe hazard which might affect the structural safety of dams.

The Bulletin deals specifically with:

Rupturing and creeping tectonic events which might affect dams and storages.

The related investigation methodology.

Evaluating the effects of fault breaks and crustal mobility on dams.

Effects of active tectonic features on selection of sites and types of dams.

Defining the engineering strategy, when facing the active tectonic rupturing and creeping movements.

This Bulletin is recommended to all those involved in the design, construction and operation of dams

Bulletin 113

1999

Seismic observation of dams-Guidelines and case studies

The Bulletin deals with the basic aspects of seismic observation of dams, and gives criteria and recommendations for the design, installation, operation and maintenance of monitoring systems, including the processing and utilisation of the obtained records. It is supported by presentation of forced vibration tests performed on dams and by representative case studies.

This Bulletin will be of particular interest to all dam engineers and all those involved in dam safety.

Bulletin 114

1999

Embankment dams with bituminous concrete facing

Review and recommendations

This Bulletin is a revised and unified edition of Bulletins 32 and 39. It introduces the present state of the art in the field of bituminous concrete facings and their interface with other elements of the dam.

It includes a review of the design principles and typical solutions used, a description of the construction materials, the construction methods and quality control, and finally discussions and descriptions of performance, inspection and maintenance for long term operation.

Bulletin 115

1999

Dealing with reservoir sedimentaiton

Guidelines and case studies

As the dams in operation throughout the world age, their reservoirs accumulate sediment deposits to some degree; with that aging, these sediment deposits become more and more of a problem towards meeting the intended purposes of those dams. Therefore, it behooves the owners and engineers of these projects to become more innovative in preventing and resolving these sedimentation related problems.

Aspects of sediment yield determination have been adequately dealt with in Bulletin 67 (1989) and are therefore not repeated in the new Bulletin.

Bulletin 116

1999

Dams and fishes - Review and recommendations

The maintenance and development of fishlife are important aspects to be considered by dam builders. In this area, the aim of the dam builder should be threefold:

Conserve the diversity of living species,

Enable riverside populations to fish for food,

Provide for the development of water-based recreational activities.

Three areas are examined in the bulletin:

The reservoir : conditions necessary for fishlife (food and reproduction),

The dam: fish pass techniques,

The river downstream of the dam: flow conditions required to maintain fishlife.

This Bulletin will be an important source of information for all those involved in the design, construction and operation of dams. However, it is restricted to river dams and does not include those in estuaries.

Bulletin 117

2000

The gravity dam : a dam for the future - Review and recommendations

It is obvious that new technical developments, particularly RCC technology, are going to promote construction of gravity dams in the world. This Bulletin discusses the possible ways and means for further reducing the cost of gravity dams, without impairing

This bulletin is based upon dam history and accidents, theoretical analysis and review of practical construction methods.

Bulletin 118

2000

Automated dam monitoring systems - Guidelines and case histories

The continuing rapid advances in electronics and computer technology have spurred considerable interest in automation of monitoring systems for dams and their foundations.

The Bulletin is intended to serve as a guide and provides comprehensive and practical state of the art information and guidelines to all those interested in the subject of automated dam monitoring.

Bulletin 119

2000

Rehabilitation of dams and appurtenant works - State of the art and case histories

There are now at least 20 000 dams in the world more than 50 years old. This is the challenge we face in dealing with rehabilitation of dams and appurtenant works, and the problem is growing. The Bulletin contains case histories to illustrate modern and innovative means of rehabilitating dams.

This Bulletin is addressed to all those involved in the design, construction and maintenance of dams and their related structures

Bulletin 120

2001

Design features of dams to resist seismic ground motion

Guidelines and case histories

The purpose of the Bulletin is to describe the actual seismic behaviour of existing dams and, from these case histories, to outline the numerous technical features to be considered for dams to resist seismic ground motion.

Such seismic considerations should essentially reflect the special investigations, design and constructions techniques that are necessary for dams in a seismically active area.

This Bulletin is addressed to all those involved in the design, construction and operation of dams.

Bulletin 121

2001

Tailings dams risk of dangerous occurences - Lessons learnt from practical experiences

Guidelines for the design, construction, operation and closure of tailings dams have been given by many ICOLD publications (45, 74, 97, 98, 101, 103, 104 and 106). If these guidelines were to be closely followed, the risk of failure or dangerous occurrence with tailings dam and impoundment would be greatly reduced. Unfortunately the number of major incidents continues at an average of more than one a year.

With the intention of trying to determine the causes of these incidents, 221 case records have been collected. They are given both in a brief detail and discussed in general terms.

This Bulletin is addressed to all those involved in the design, construction, operation and closure of tailings dams.

Bulletin 122

2001

Computational procedures for dam engineering - Reliability and applicability

The Bulletin deals essentially with two main subjects. The first one consists of a critical, analytical review of what can be the role and the effectiveness of mathematical models to analyse the different phenomena related to safety of dams during the different stages in their life. The second subject is aimed to illustrate some of the reference solutions.

This Bulletin is addressed to all dam engineers involved in computational problems and related areas.

Bulletin 123

2002

Seismic design and evaluation of structures appurtenant to dams

Guidelines

This Bulletin, which follows up the Bulletin 120 "Design features of dams to resist seismic ground motion", deals with the earthquake design, analysis and safety evaluation of structures appurtenant to new or existing dams : spillways, water conduits, intake towers and other appurtenant structures.

The Bulletin will be an important source of information for all those involved in the design, construction and operation of dams.

Bulletin 124

2002

Reservoir landslides : investigation and management - Guidelines and case histories

During the last decades of the 20th century, natural disasters, and particularly those caused by floods, have significantly affected human life by producing grave social impact and economic damages. The principal aim of this Bulletin is to demonstrate the role played by dams in flood mitigation by describing real case.

 The Bulletin is addressed to all those involved in the design, construction and operation of dams and their reservoirs.

Bulletin 125

2003

Dams and floods - Guidelines and case histories

During the last decades of the 20th century, natural disasters, and particularly those caused by floods, have significantly affected human life by producing grave social impact and economic damages. The principal aim of this Bulletin is to demonstrate the role played by dams in flood mitigation by describing real case.

The Bulletin is addressed to all those involved in the design, construction and operation of dams and their reservoirs.

Bulletin 126

2003

Roller-compacted concrete dams - State of the art and case histories

This Bulletin deals with the state of the art of roller-compacted concrete dams and follows more than two decades of notable advances in the technology, with the principal objectives of reducing the costs of construction of concrete dams and shortening the construction time.

The purpose of this bulletin is to make available a synopsis of current practice in the use of roller-compacted concrete for dams.

The Bulletin is addressed to all those involved in the design, construction and operation of dams and their reservoirs.

Bulletin 129

2005

Dam Foundations. Geologic considerations. Investigation Methods. Treatment. Monitoring

The foundation of a dam is the most complex part of a water storage facility, moreover, it is also one of the most important components governing the safety of the structure. The main objectives of this Bulletin are to present the state of current practice. The Bulletin is intended as a guide to dam Owners, Designers, and Contractors and is relevant to dams under design as well as those under operation. The subject of dam foundation is very broad, a comprehensive bibliography directs the reader to the relevant literature.

This Bulletin is not a manual with ready-made instructions. Its message is to point out the tools and methods available today in dam foundation engineering and analysis, to make the reader aware of problems and pitfalls, and to emphasize the importance of geology and of a systematic approach to engineering geological investigations.

Bulletin 130

2005

Risk Assessment in Dam Safety Management. A reconnaissance of Benefits. Methods and Current Applications

La complexité sans cesse croissante de la prise de décision pour les barrages, dans le respect de cette exigence de transparence et de responsabilité, demande de nouvelles approches pour une exploitation économique et sûre, pour la maintenance et pour la gestion d'ensemble. L'évaluation des risques fait partie de ces possibilités.

Les principes de l'évaluation des risques sont logiques et rationnels, et doivent être pris en compte par tous les pays lors de prises de décision concernant les barrages. Ce bulletin est destiné à encourager les discussions au sein de la profession, pour avancer vers une position largement acceptée sur le rôle de l'évaluation des risques. Il est également destiné à servir d'outil complémentaire pour les ingénieurs, les maîtres d'ouvrage et les autorités de régulation afin de remplir leurs obligations dans tous les domaines de la sécurité des barrages.

Bulletin 131

2006

Role of Dams in Flood Mitigation - A review

The main purpose of this Bulletin is to highlight the role that dams can play in flood mitigation, as one of the options to be taken into consideration within the framework of Integrated Flood Management (IFM). Dams and reservoirs constitute a very effective structural measure, since they are able to store large flood volumes, modify flood routing, and significantly reduce peak floods. This Bulletin contains relevant experiences and real cases of benefits that dams and reservoirs have brought where flood mitigation is concerned, in China, USA, Japan, South Korea, Spain and Honduras.

The Bulletin aims to demonstrate and put across the essential facts with respect to the role of dams and reservoirs in flood mitigation, and is aimed at a wider and more general audience than just dam experts. It will serve to objectively show the benefits and risks associated with dams and reservoirs as part of Integrated Flood Management.

Bulletin 132

2008

Shared Rivers : Principles and practices

Shared rivers number some 265 and their drainage basins cover an area of almost half of the total land area of the earth. International considerations are thus vital aspects in the planning, implementation and management of water resources.

The approach taken in this Bulletin was to compile a document (over 3600 treaties relating to international water resources) which will provide the reader with a distillation of principles and practices relating to the subject. Examples of successes and problem cases are included for illustrative purposes. The development of electronic information exchange over the last decade has opened up new approaches towards accessing current information.

Bulletin 133

2008

Embankment Dams on Permafrost

A review of the Russian experience

Zones where permafrost is found (cryolitic zones) are characterized by a rigorous climate and complicated topographic, geological and hydrogeological conditions. Therefore, it is reasonable to give an insight into the structural features and the engineering characterizing the operation and repair of dams built in cryolitic zones, on the basis of exploration, design, construction and operation experience

The Bulletin is intended for geological engineers, designers and builders of hydraulic engineering structures.

Bulletin 134

2008

Weak Rocks and shales in Dams

There are therefore many potential dam sites on shale or other weak rocks. This bulletin aims to assist dam engineers to develop such sites effectively in future. It advises on the means of using these materials by developing an understanding of their properties and by learning from the experiences of others in their successful use.

It provides a technical background to the behaviour of shale and weak rocks as fill in dams.

Bulletin 135

2010

Geomembrane sealings systems for Dams

This new edition in 2010 cites 280 dams and updates the data and recommendations of the first two 38 and 78 Bulletins. It reviews the new information and practices that have appeared in the meantime, which include application of geomembrane as the only watertight element in fill dams, in RCC dams as external joints, as underwater repair on gravity dams.

This new Bulletin also deals with application of geomembranes for dams affected by AAR. The Bulletin reports about sealing of defective joints and cracks in the upstream face of CFRDs by strips of geomembranes mechanically fastened.

Bulletin 137

2011

Reservoirs and seismicity - State of knowledge

Reservoir triggered seismic phenomena are affecting a small fraction of the dam population as significant triggered earthquakes. On microseismic level such phenomena are probably much wider as a number of them have gone unobserved

ICOLD has considered this problem and special attention was paid since 1969.

The main conclusion in this Bulletin is that RTS possibility should be considered for each large dam within the frame of prevailing seismotectonic conditions.

This Bulletin is intended to be of help in understanding the nature of and evaluating the likelihood of facing the RTS phenomena.

Bulletin 138

2009

General approach to Dam Surveillance

Basic elements in a "dam safety" process

A "General Approach to Dam Surveillance" is presented here, for owners, managers and other non specialists.

Dam Surveillance is a basic element in Dam Safety processes within the current legal frameworks. It covers a series of complementary and redundant activities, made of visual inspections, dam documentation management, monitoring, equipment checking and testing, and assessment of dam condition and behaviour.

Bulletin 139

2011

Improving tailings dam safety - Critical aspects of management, design, operation and closure.

Critical aspects of management, design, operation and closure

In considering the critical aspects required to improve tailings dam safety, the following subjects are addressed in this Bulletin:

Corporate and Management Commitment

Education and training of company staff

Critical aspects relating to the design of a tailings dam

Critical aspects to be considered when designing for and implementing the final closure of a tailings dam

Risk management

The essential need for regular external audits

Some notes on the positive role that is played by industry regulators.

The conclusion reached in the document is that diligent attention to these critical aspects will result in improved awareness and a lowering of safety incidences for tailings dams.

Bulletin 141

2011

Concrete face Rockfill Dams - Concepts for design and construction

Updated version of the Bulletin on "Rockfill Dams with Concrete Facing" (Bull 70).

During the decade of the 1990s, the concrete face rockfill dam has become common. A cursory review of the listing of CFRDs in the appendix indicates the widespread use and popularity of this type of dam.

The updated Bulletin is devoted to design concepts, analysis, foundation treatment, instrumentation, construction, and performance.

Bulletin 142

2012

Bulletin on safe passage of extreme floods

The adequate management of flood is of fundamental importance for dam safety and for the security.

Subjects explored in this bulletin are:

The severe direct and indirect consequences of potential dam failure on human life, environment and economy

Planned implementation of dam projects including new projects; the need for the rehabilitation and up rating of ageing dams; the need to cope with increasingly difficult conditions and constraints for the implementation of dams

The intense implementation of small dams with limited use of engineering resources, resulting in increased risks, as evidence by the statistics of failures.

The relevant role of hydrological/hydraulic safety, namely its dependence on uncertainties, limitation of available information and limited predictability of intervening phenomena.

The specific characteristics of hydrological/hydraulic safety, namely its dependence on uncertainties, limitation of available information

Bulletin 143

2013

Historical review on ancient Dams

This bulletin treats about ancient dams constructed by the Man, the first one about 5?000 years ago. As varied as their origins, were the structural characteristics of ancient dams, for which no regional preference are discernible. They had one aspect in common however, to resist the water pressure only the weight of the construction material was used, but not it strength itself.

Various countries contributed to the bulletin of the small dams ICOLD committee, in which it is possible to follow up the construction of several ancient dams in different places and time along the world.

Bulletin 144

2011

Cost savings in Dams

The present Bulletin reviews Bulletins 73 and 83, using lessons from Question 84 and also takes into account the six other specific bulletins on Cost Savings. It applies to various dams apart from tailing dams where the problems and solutions are very different.

This present bulletin is devoted to:

Identifying and mitigating existing non technical factors detrimental to cost savings

Technical opportunities for innovation and cost savings in the design of both high and low dams.

It is based upon a preliminary analysis of:

Existing dams.

Present trends in dam construction.

Bulletin Preprint -145

The physical properties of hardened conventional concrete in dams

The purpose of this bulletin is to provide a comprehensive treatise on the physical properties of hardened conventional concrete for dams.

This bulletin addresses also the physical properties of the mass concrete used most frequently in design and analyses of concrete dams and appurtenant structures.

The scope of the bulletin is, to each property considered, to show typical behavior, factors influencing it, methods for experimental determination, and methods to introduce the properties in mathematical models to be utilized both for design and observation.

Bulletin 146

2016

Dams and Ressetlement - Lessons learnt and recommendations

The report is intended to be an informational source for policy makers as well as implementers. It should highlight the latest policies, criteria and resettlement measures adopted, their implementation aspects and the performance or effectiveness of the mitigation measures taken to improve the living standards and quality of the life of the relocation.

This bulletin deal with issues implied by resettlement, it explains history cases and the lesson learnt, it recommends strategies.

Bulletin Preprint-147

2016

Sedimentation and sustainable use of reservoirs and river systems

This Bulletin discusses the upstream and downstream fluvial morphological impacts of reservoir sedimentation and possible mitigation measures.

The current state and possible future sediment deposition in reservoirs have been investigated globally with the aid of the ICOLD Register on Dams.

This Bulletin also investigates the impacts of dams on the ecology related to fluvial morphological changes, and guidelines are proposed to try and mitigate the impacts on the downstream river morphology. Finally an economical model is presented which considers a life cycle approach and reservoir conservation.

Bulletin 148 

2016

Selecting seismic parameters for large dams - Guidelines (revision of Bulletin 72)

Since then there have been significant advances in the seismic design of dams and a revised Bulletin is considered necessary which takes into account current practice in a number of countries with the following ends in view:

To provide a guide for the selection of parameters to be used in the seismic design, analysis and safety evaluation of new or existing dams and their appurtenant structures.

To promote consistency in handling the earthquake aspects of dam performance evaluation among owners, designers and various organizations involved in the planning, design, construction, operation, maintenance and regulation of dams.

This bulletin revision comes after several years of work by the Committee on Seismic Aspects of Dam Design and has, in particular, addressed the following aspects:

A new section on Seismic Input parameters.

Reference to liquefaction.

Introduction of Safety Evaluation Earthquake (SEE).

Improved references to problems posed when constructing dams across active faults.

Improved references to Reservoir-Triggered Earthquakes (RTE).

Additional material on Peak Vertical Accelerations and Earthquake Durations.

Updated references to attenuation formulae

Updated list of references.

Bulletin 149 

2014

Role of dams on the development and management of rivers basins.

The aim of this report is to explain the role of dams in the development of river basins. We have stated that dams are simply tools for the management of water resources in rivers basins.

This bulletin focuses on the process of integrated river basin planning and management that has become an extremely diverse process involving a wide range of economic, and, as the major source of freshwater, is vital to mankind. Good management for sustainable development is the goal with all of its social, environmental and economic dimensions.

This bulletin analyse the role of dams in river basins and their contribution satisfying people needs. Then it deals with the integration of rivers basins as planning units for the development and management of water resources, finally it discuss the decision taking processes and stakeholder participation in different stage.

Bulletin 150

Cutoffs for dams

This bulletin is limited to foundation treatment methods using cutoff-type barrier. Due to recent experiences, high emphasis is given to alluvial deposits throughout this document; however, different materials, such as pervious residual soil, pervious laterites and saprolites, highly fractured and weathered rock, and karst may require cutoff. The construction of cutoffs has made significant advances during the last two decades.

The following types of cutoffs are presented in this bulletin:

Diaphragm walls

Vib walls

Pile walls

Superimposed concreted galleries

Jet grouting

Deep mixing

Case histories illustrate this bulletin.

Bulletin 151

2017

Tropical residual soils as dam foundation and fill material

Dam construction across the world has recently acquired an accelerated pace as needs for water supply and renewable energy sources have increased in many countries. Many of these countries are located in areas where tropical residual soils are abundant.

The main difficulty in dealing with these soils for engineering purposes is that their characteristics are very different from those of transported soils.

The purpose of this bulletin is to illustrate how these materials have been accepted and used in dam projects without imposing selection of better known materials that could jeopardize the economic viability of a project.

Bulletin 152

2014

Cost savings in specific dams

This bulletin has been devoted to cost savings in Dams, including 2 parts:

Identifying and mitigating existing factors detrimental to Cost Savings such as procedures, set ideas, unadapted specifications…

Technical opportunities for innovation and cost savings in the design of high and low dams built in usual conditions.

The present bulletin refers to such technical opportunities for innovation and cost savings when they apply to special dams for which the specific conditions may require or favour unusual criteria or designs and / or construction methods. They may be required by environmental problems, climatic changes or local physical or economical conditions. Such specific dams may in the future require over half of all dam investments.

Bulletin 153

2013

Sustainable design and post-closure performance of tailings dams

This bulletin provides guidance for the designers, owners, operators and regulators of tailing dams on closure considerations for design at all stages of the tailings dam.

The bulletin contains three main sections with a discussion on the following topics:

Sustainable Closure Principles, covering current international practice, regulations, objectives, design life and phases, financial and risk management practices as they relate to closure.

Sustainable Design Considerations, covering the main aspects of physical, chemical, ecological and social stability associated with tailing dam closure.

Monitoring, covering post closure and long term monitoring requirements.

The document presents a range of international approaches to the subject of sustainable tailings dam closure.

Bulletin Preprint - 154 - Spanish

Gestion de Seguridad de Presas: Etapa Operativa del Ciclo de Vida de la Presa

Bulletin 154

2017

Dam safety management: Operational phase of the dam life cycle

This Bulletin is devoted to the development and the implementation of a dam safety management system for dams in the operational phase of their life cycle. It outlines the general structure of a systems approach to safety management, and strives to develop a system that can address all the interdependencies, and encompass all the arrangements necessary to ensure proper dam safety management.

In conclusion, the authors and the entire Committee on Dam Safety sincerely hope that the Bulletin will be helpful in developing, implementing, reviewing and improving the management of dam safety at all organizational levels.

Bulletin 155

2013

Guidelines for use of numerical models in dam engineering

This bulletin is made to help engineers in establishing a sound computation strategy based on a careful analysis of the problem to be solved, selecting the adequate software options needed, then carrying out the analysis in a progressive way with frequent checks, and finally using adequate outputs to make rational interpretation of the results achieved, so as to translate them into engineering decisions.

This will be done through recommendations, and also examples in different contexts.

The present bulletin provides only few developments on the selection of input data, distributed among the different chapters. Moreover it voluntarily omits providing recommendations on performance criteria and solicitation combinations, since these aspects are generally widely covered by standards or codes in force in most countries. It does not cover computational fluid mechanics applications.

Bulletin 156

2014

Integrated flood risk management

Therefore, the purpose of the present bulletin is to give guidance in integrated flood risk management to people assigned technically or managerially with the task of flood management and control. Without giving preference for any method, the bulletin aims to describe the fundamental knowledge needed for flood management according to the current state-of-the art and to provide help in selecting the most appropriate design and implementation strategy, based on basin-specific characteristics and the framework of integrated flood risk management.

The prerequisites for all flood management are the understanding of flood characteristics and how to calculate both the magnitude and frequency of floods. Equally essential are the understanding of the impacts of floods, both negative and positive, and how to quantitatively and qualitatively evaluate these. The knowledge of flood characteristics and impacts is a fundamental input to the risk analysis, which forms the basis for integrated flood management.

Bulletin 157 

2016

Small dams: Design, Surveillance and Rehabilitation

This bulletin was prepared as a guide for small dam owners, engineering, Government agencies, developers and contractors who are in charge with the design, construction, operation, maintenance and safety of small dams.

Design criteria and typical features for small dams are generally different from those for high dams, because the construction methods focus upon economy. So the risk may increase and corresponding accidents may cause significant victims. The basic principle of design is to produce a satisfactory functional structure at a minimum total cost. At the “Peculiar Features about the Design of Earthfill Dams” are presented the important contributions from China, United States, France South Africa, Australia and Japan, related to the recommended embankment slopes for small dams based on the experience with the construction of a large number of those small structures.

“Guidelines on Surveillance of Small Dams” presents the main recommendations in order to assure that the dams will behave appropriately and with a minimum cost. The construction of a dam can involve a significant investment and dam owners need to ensure that their money is well spent and that their dam becomes an asset.

Bulletin 158

Dam surveillance guide

Prepare guidelines for the optimal organisation of all components required for dam surveillance and monitoring (independently of the Automated? Monitoring, already covered by Bulletin n째 118) with the purpose of dissemination in the fields of:

Visual inspection methods and procedures for improving their efficiency;

Continued availability and maintenance of technical data (documentation management for storage of engineering data and all information needed for periodical appraisal of the dam condition and support of engineering judgment as well as knowledge transfer from one generation to the next);

Optimization of instrumentation and monitoring (depending on the dam type and condition) and upgrading of instrumentation (on old dams);

Efficient management of monitoring data (acquisition, processing, conservation) and interpretation (of processed readings and observed data) to assess the present dam condition???

Bulletin 161

2021

Dams and Water Transfers - An Overview

The present Bulletin presents a complete response from the ‘Technical Committee of ICOLD on Dams and Water Transfer (CDWT)’ to the Terms of Reference. It starts with related global information, brings out related efforts made in countries with completely differing climate, economy, population distribution etc. about present status within and between river basins & countries – both surplus and or deficit, while recognizing the crucial role played by dams in water transfer to needy regions. It then enumerates guidelines followed in considering various options, while identifying geographical issues, limited by political territories & legal issues like water treaties. Essentially then, it dwells on possible need, potential and problems in water transfers that must be handled to overcome B/C issues faced by needy countries. In order to assist concerned professionals, the Bulletin finally elaborates on objections raised by different stake-holders in the subject and provides answers generated globally. The on-going debate world-over about WRD versus environmental impacts is then dealt with to help Member-countries overcome various issues.

Bulletin 162

2021

Environmental Fluid Mechanics

Dams are planned, constructed, and operated to meet human needs - generation of energy, irrigated agricultural production, flood control, public and industrial supply, supply of drinking water, and various other purposes. Dams impound water in reservoirs during times of high flood that can be used for human requirements during times with inadequate natural flows. Positive impacts of dams are improved flood control, improved welfare resulting from new access to irrigation and drinking water. Without dams there would be insufficient food to feed the world’s people and energy would be generated by burning fossil fuels that produce greenhouse gases.

Despite this progress there remain significant concerns about the environmental impacts of dams. These environmental impacts are complex and far reaching, remote of the dam, and may occur in time with the dam construction or later and may lead to a loss of biodiversity and of productivity of natural resources.

This bulletin compiles improvements in knowledge and state of the art technology to avoid or mitigate environmental impacts of dams on the natural ecosystem as well as to the people that depend upon them for their livelihood and also addresses the mitigation of environmental impacts on dams and reservoirs.

Bulletin 163

2020

Dams for Hydroelectric Energy

143 pages, main text bilingual English / French, in 5 chapters + case studies. Illustrated cover.

The Bulletin is intended as a general document aimed at a wide technical audience involved with or affected by hydropower. Basic background data and some statistics are presented, with specific reference to hydro-electricity production, hydropower dams, hydropower plants, in operation or under construction.

Key aspects of hydropower are discussed. Data are presented about typical capital and both internal and external operating costs. Environmental and social impacts are discussed, and reference is made to the impact reservoirs have on greenhouse gas emissions.

A section is dedicated to the exploitation of tidal energy by means of barrage systems. The current extent of hydropower development and the influence of policies aimed to favour the development of renewable energies are also discussed. Reference sources of information, on hydropower in general and interesting casehistories, are provided.

Bulletin 164

2017

Internal Erosion of Existing Dams, Levees and Dikes, and their Foundations

Internal erosion is one of the major causes of embankment dam failure.

When constructing new dams, protection against internal erosion is provided by zoning and by providing filters. However, many existing dams are not adequately zoned and do not have filters and may therefore be vulnerable to internal erosion. Others have filters not designed and/or constructed to modern standards, they too may be vulnerable to internal erosion.

The Bulletin is in two volumes. Volume 1 deals predominantly with internal erosion processes and the engineering assessment of the vulnerability of a dam to failure or damage by internal erosion, with a brief oversight of monitoring for and detection of internal erosion and remediation to protect dams against internal erosion. It includes a comprehensive listing of the Terminology used in internal erosion. Many references are also given, including links to many from an ICOLD internal erosion webpage.

Volume 2 gives more details of internal erosion investigations, and appropriate testing, monitoring and detection, and remediation, and gives case histories.

Bulletin Preprint - 165

Selection of Materials For Concrete In Dams

Bulletin 166

2016

Inspection of dams following earthquake - guidelines

Revision of Bulletin 062A

Large dams should be able to resist the effects of the strongest ground shaking to be expected at the dam site. However, major damage is accepted as long as there is no catastrophic release of water from the reservoir.

Accordingly, the inspection of dams following earthquakes is an important aspect in the integral safety concept of dams.

The bulletin was first published in 1988. Since then a few earthquakes have occurred, which have also caused damage to dams.

Bulletin Preprint - 167

Regulation of Dam Safety: An overview of current practice world wide.

Bulletin 168

2017

Recommendations for Operation, Maintenance and Rehabilitation

The need for proper operation and maintenance is of crucial importance for developing countries’ organizations which may have, at present, limited experience. The aim of this bulletin is to offer the possibility to benefit from the experience of other organization or countries.

It is also a fact that our dams are aging and one day, or another, Owners will have to face the issue of rehabilitation or adapting to new operating conditions.

Twenty-eight (28) countries participated at different levels to this Bulletin.

The purpose of this Bulletin is not to define the proper organization or procedures, but to open the eyes of newcomers either to plan for the future of their new born dam or to assist them to solve problems they may experience with their existing dams today.

Bulletin 170

Flood Evaluation and Dam Safety

Bulletin Preprint - 172

Technical Advancements in Spillway Design - Progress and Innovations from 1985 to 201

Bulletin 173

2021

Integrated Operation of Hydropower Stations and Reservoirs

Integrated operation of hydropower stations and reservoirs has become a trend of hydropower exploitation, as an effective technical measure, integrated operation can improve the utilization efficiency of water resources, reduce the risks of flood and drought disaster, increase the safety and stability power grid and make sure that hydropower stations and reservoirs operate in an appropriate and economical way. This bulletin gives an overview of the main functional and operational aspects relating to cascade hydropower stations and reservoirs, it was formed by reviewing of all the related aspects proposed and case studies provided by committee members. It collected and sorted out operation modes and practical experiences of hydropower stations and reservoirs in ICOLD member countries, summarized the feasibility measures, benefit evaluation methods and system platform construction of hydropower stations and reservoirs with comprehensive benefits, and shared case studies from 10 countries, including Brazil, China, France, Iran, Japan, Korea, Nigeria, Russia, Switzerland and USA.

Bulletin 175

2021

Dam Safety Management: Pre- operational Phases of the Dam Life Cycle

Dam Safety Management is a major concern during the entire lifetime cycle of a dam scheme. This is particularly true for the operational phase of the scheme that represents by far the longest period in its lifetime cycle. Bulletin 154 presented a general approach and concepts to be applied to dam operation. The current Bulletin 175 extends the developed concepts to all phases preceding the operational phase. Many risks associated with the operation of existing dams have their origins in other phases preceding the actual operation. Although there are numerous ICOLD Bulletins addressing technical aspects of planning, design, construction and commissioning of dams, there is not a single Bulletin which covers the subject in a comprehensive manner. The current document is a first attempt to capture all relevant dam safety aspects in all preoperational phases by systematically characterizing the actors involved, their roles, the activities and complex interactions present in different phases of the dam lifecycle. An Overarching Safety Management System is specifically developed that can be applied to all actors involved.

Bulletin 177

2020

Roller-Compacted Concrete Dams

425 pages, main text bilingual English / French, in 9 chapters + Appendix. Illustrated cover.

ICOLD Bulletin 177 ‘Roller-Compacted Concrete Dams’ presents the state-of-the-art on roller-compacted concrete technology for dams, incorporating the advances of the RCC technology for dams over the last 15 years since the previous Bulletin on the topic was released in 2003. Hence, the present ICOLD Bulletin 177 supersedes ICOLD Bulletin 126 (‘Roller-compacted concrete dams - State of the art and case

histories’, published in 2003) and ICOLD Bulletin 75 (‘Roller-Compacted Concrete for Gravity Dams’ published in 1989). While roller-compacted concrete technology could have still been considered a new technology in 2003, it is now true to say that construction by roller-compaction has become the standard approach for large concrete gravity dams.

This Bulletin addresses all aspects of the planning, design, construction, and performance of RCC in dams. Mixture proportioning and quality control are discussed, and a comprehensive listing of references is included. Many aspects of RCC in dams have become better understood since the publication of Bulletin No 126 and the present Bulletin contains less information on the approaches applied in different countries but includes more comprehensive information particularly in relation to design, mixture proportioning and construction. With greater understanding, it has further been possible to highlight more definitively the requirements of successful RCC dams, as well as the pitfalls and difficulties that can be associated with RCC dam design and construction.

Bulletin Preprint - 179 

Asphalt Concrete Cores for Embankment Dams

Bulletin Preprint - 180

Dam Surveillance - Lessons learnt from case histories

Bulletin 181

2021

Tailings Dam Design - Technology Update

Tailings are produced from the processing of mineral ores and are commonly stored within embankment dams. The design of the dams requires application of sound engineering principles and an understanding of the properties of the tailings. This Bulletin provides a framework for classifying different types of tailings, ranging from ultra-fine to coarse, based on their geotechnical properties and provides typical geotechnical parameters for the different tailings types. Technologies for dewatering tailings to reduce the risk of storage continue to be developed and the different technologies, from thickening to filtration, and re-application of old technologies are presented to illustrate the options available and, where appropriate, typical in situ properties. This bulletin is directed towards a wide audience of stakeholders: designers, owners, regulators, communities and various organizations and provides a reference for communicating tailings properties and the benefits and limitations of technologies. All mining operations, and thereby tailings operations, are unique. There is no one-solution-fits-all. Tailings dam designs need to account for site-specific conditions, such as climate, physiography, geochemistry, geomorphology, seismology, mining processes, environment, and community setting, with the application of technologies playing an important role in developing safe, sustainable tailings facilities.

Bulletin Preprint - 182

Sediment management in reservoirs: National regulations and case studies

Bulletin Preprint - 183

Selection of Dam Type

Bulletin Preprint - 184

Management of expansive chemical reactions in concrete dams & hydroelectric projects

Bulletin Preprint - 185

Challenges and needs for dams in the 21st century

Bulletin Preprint - 186

Integrated optimal operation of cascade hydropower stations and reservoirs

Bulletin Preprint - 187

Flood evaluation, hazard determination and risk management

Bulletin Preprint - 191

Dam Safety: Concepts, Principle and Framework

Bulletin Preprint - 192 

Dam Safety: Governance Considerations

Bulletin Preprint - 193

Sediment Bypassing and Transfer

Bulletin Preprint - 194

Tailings dam safety

Bulletin Preprint - 195

Cemented material Dams: Design and Practice - Cemented Soil Dams

 

Một số Bullentin chuẩn bị ban hành

2025- The sustainability of concrete dams: Volume 1 - Design and construction

The International Commission on Large Dams (ICOLD) confers the International ICOLD Innovation Awards for innovative scientific and technical contributions, in the field of dams and reservoirs with special focus on their role in sustainable water resources management under consideration of environmental constraints.

The following regulations apply to the awards:

1. These Awards is open to recent (less than 10 year), original scientific and technical original contributions, that have not been previously submitted to another award, in the field of dams, reservoirs and leveesregarding technical but also socio-economical and environmental aspects with consideration of balanced and sustainable water resources management as well as climate change.

2. Application can be submitted by a single author or a team (3 persons maximum)

3. Candidates should submit their applications to the Central Office, International Commission on Large Dams (ICOLD), 61 Avenue Kleber, Paris (France) for the paper version and by email to contact@icold-cigb.org. It should be accompanied by a CV of the author(s) as well as by a letter to the Jury, which explains how the application fulfils the compliance with the first clause. The candidates should apply through their National Committees or at least inform them.

4. The application must be in English or in French and must be submitted before September 30th (2024) in the year before the upcoming ICOLD Congress in Chengdu, China. One hard copy and an electronic version are required. The name and the address of the author or authors must be clearly indicated.

5. The evaluation committee (jury) is made up of a chair and members of the ICOLD Board of Directors. The jury's final decision will be communicated to the winning authors in early 2025.

6. The ICOLD Innovation Awards consist of up to 3 Trophies (GOLD, SILVER,BRONZE) and 1 500 Euros, 1 000 Euros, 500 Euros cash prize, respectively.

The award receivers will be granted a free Congress admission (one per awarded person) to the ICOLD Congress 2025 where they will have the opportunity to present their contributions. If a team is selected for an award (GOLD or SILVER or BRONZE), the cash prize will be equally divided among the team.

7. The Awards will be given to the winners during the ICOLD Congress 2025, in Chengdu, China.

8. If none of the submitted applications fulfils the required quality for the AWARDS, the Jury can decide not to assign it.

9. The awards winners allow ICOLD to inform the media about the awards and the winners.

10.The application to the ICOLD Innovation Awards implies that the candidates accept these rules. The decision of the Jury will not be open to appeal.

2025- Climate change, dams and reservoirs

ICOLD Technical Committee Y on Climate Change, Dams and Reservoirs is relatively new in the history of ICOLD. It has been established in 2009 and published its first bulletin in 2017 – Bulletin 169. This first bulletin was a kind of introduction for all dams and reservoirs practitioners to the global issues associated to climate change for water resources systems. It created a first formal link between the available information established by the climate science international community and the ICOLD community, covering the three major components of climate change issues:

• The science of climate evolution: trends from past observations and future projections;

• The assessment of climate change impacts on dams, reservoirs and water resources systems;

• The factors and actions that may help reduce greenhouse gas emissions and mitigate climate chang

 

2025- CLIMATE CHANGE, DAMS AND RESERVOIRS - Role of Hydropower in climate change mitigation and new energy mix

This bulletin focuses on the Role of Hydropower in climate change mitigation and new energy mix. It is organized in chapters presenting:

• Hydropower as a catalyst for energy transition;

• Some aspects of the role of hydropower in climate change mitigation and its contribution to a net-zero energy mix;

• The role of hydropower in climate change mitigation scenarios;

• Key recommendations.

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By: Nguyễn Quốc Dũng