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Author : Basson G.R.
Publisher : Unknown
Page : 102 pages
File Size : 51,9 Mb
Release : 1996
Category : Electronic
ISBN : OCLC:154779936
Author : Anonim
Publisher : Unknown
Page : 102 pages
File Size : 53,7 Mb
Release : 1999
Category : Electronic
ISBN : OCLC:928253015
Author : Gerrit Roux Basson,A. Rooseboom,South Africa. Water Research Commission
Publisher : Unknown
Page : 128 pages
File Size : 42,9 Mb
Release : 1999
Category : Dredges
ISBN : 1868454932
Author : Sahnaz Tigrek,Tuce Aras
Publisher : CRC Press
Page : 228 pages
File Size : 41,7 Mb
Release : 2011-09-15
Category : Science
ISBN : 9780415603393
Siltation in reservoirs has become an important problem when dams are getting older and stop functioning when the sediment has accumulated to a certain extent. With proper sediment management techniques, negative effects of sediment can be avoided and reservoir life and performance can be improved. This volume deals with reservoir sedimentation, deposition and removal. It provides the principles of sediment transport and gives guidelines to predict reservoir life. It presents several removal techniques, accompanied with detailed operation descriptions. With the help of the RESCON open source software, cost analysis tools to determine the optimum method for maintenance and operation of a reservoir can be applied. To illustrate practice and to assist the reader in setting up a sediment management operation, a number of case studies of existing large dams are included. Written by two experts on reservoir operation, this volume is intended for professionals and advanced students working on dam and reservoir design, construction, operation, maintenance and rehabilitation.
Author : Gregory L. Morris,Jiahua Fan
Publisher : McGraw Hill Professional
Page : 864 pages
File Size : 40,5 Mb
Release : 1998
Category : Science
ISBN : 007043302X
Focusing on reservoir sedimentation management and control, this work defines the nature and severity of sedimentation, reviews relevant physical processes, describes techniques used to combat sedimentation, and presents detailed case studies.
Author : Cigb Icold
Publisher : ICOLD Bulletins Series
Page : 300 pages
File Size : 41,5 Mb
Release : 2021-06-28
Category : Reservoir sedimentation
ISBN : 0367772280
The guidelines on mathematical modelling of sediment transport dynamics in reservoirs in this document can be used during the planning and design of new dams, as well as for the management of existing dams.
Author : Cigb Icold
Publisher : CRC Press
Page : 334 pages
File Size : 41,5 Mb
Release : 2021-06-27
Category : Technology & Engineering
ISBN : 9781000383515
As reservoir sedimentation has proven to be a serious problem in South Africa, research in this field has been ongoing for more than 70 years. This publication emanates from extensive research which has been undertaken over the past 30 years with the support of the South African Department of Water and Sanitation as well as the South African Water Research Commission. A great deal of information has fortunately also been obtained from China. Given the universal nature of hydraulic formulae it is not surprising, yet gratifying, that Chinese and South African data generally conform to the same mathematical relationships. This indicates that these relationships should be applicable in other countries as well. Much of the information contained here has been condensed from a more comprehensive publication. This ICOLD Bulletin follows on Bulletin 115 “Dealing with reservoir sedimentation”, which gave guidelines for management of reservoirs to limit sedimentation. The guidelines on mathematical modelling of sediment transport dynamics in reservoirs in this document can be used during the planning and design of new dams, as well as for the management of existing dams. Comme la sédimentation dans les réservoirs s'est avérée être un problème sérieux en Afrique du Sud, la recherche dans ce domaine est en cours depuis plus de 70 ans. Cette publication émane de la recherche étendue qui a été menée au cours des 30 dernières années avec l'appui du ministère sud-africain de l’eau et de l’assainissement, ainsi que de la commission sud-africaine de recherche sur l'eau. Un grand nombre d'informations ont également été obtenues de la part de la Chine. Étant donné le caractère universel de formules hydrauliques, il n'est pas surprenant, mais très gratifiant, que les données chinoises et sud-africaines se conforment généralement aux mêmes relations mathématiques. Ceci indique que ces relations devraient être applicables dans d'autres pays également. Une grande partie de l'information contenue ici a été condensée à partir d'une publication plus complète. Ce bulletin CIGB fait suite au bulletin 115 "Traité sur la sédimentation dans les réservoirs", qui a donné des directives pour la gestion des réservoirs en vue de limiter la sédimentation. Les directives sur la modélisation mathématique de la dynamique de transport des sédiments dans les réservoirs de ce présent document peuvent être utilisées lors de la planification et la conception de nouveaux barrages et pour la gestion des barrages existants.
Author : Silke Wieprecht,Stefan Haun,Karolin Weber,Markus Noack,Kristina Terheiden
Publisher : CRC Press
Page : 282 pages
File Size : 43,6 Mb
Release : 2016-11-30
Category : Science
ISBN : 9781317225317
Sediment dynamics in fluvial systems is of great ecological, economic and human-health-related significance worldwide. Appropriate management strategies are therefore needed to limit maintenance costs as well as minimize potential hazards to the aquatic and adjacent environments. Human intervention, ranging from nutrient/pollutant release to physical modifications, has a large impact on sediment quantity and quality and thus on river morphology as well as on ecological functioning. Truly understanding sediment dynamics requires as a consequence a multidisciplinary approach.River Sedimentation contains the peer-reviewed scientific contributions presented at the 13th International Symposium on River Sedimentation (ISRS 2016, Stuttgart, Germany, 19-22 September 2016), and includes recent accomplishments in theoretical developments, numerical modelling, experimental laboratory work, field investigations and monitoring as well as management methodologies.
Author : Rodney White
Publisher : Thomas Telford
Page : 292 pages
File Size : 43,6 Mb
Release : 2001
Category : Reservoir sedimentation
ISBN : 9780727729538
This book is concerned with one of the methods of removing sediments from reservoirs, namely the flushing of sediments through purpose built outlet works within the dam. This technique can be applied to existing dams, with adaptation of the engineering works, and to new dams. The book gives practical guidance on the necessary hydrological, hydraulic, sedimentological and topographical features for successful flushing.In this book the author draws together his wealth of experience of working in this field.
Author : Guangtao Fu,Guangheng Ni,Chi Zhang
Publisher : MDPI
Page : 498 pages
File Size : 49,7 Mb
Release : 2019-04-09
Category : Technology & Engineering
ISBN : 9783038977384
River catchments and reservoirs play a central role in water security, food supply, flood risk management, hydropower generation, and ecosystem services; however, they are now under increasing pressure from population growth, economic activities, and changing climate means and extremes in many parts of the world. Adaptive management of river catchments and reservoirs requires an in-depth understanding of the impacts of future uncertainties and thus the development of robust, sustainable solutions to meet the needs of various stakeholders and the environment. To tackle the huge challenges in moving towards adaptive catchment management, this book presents the latest developments in cutting-edge knowledge, novel methodologies, innovative management strategies, and case studies, focusing on the following themes: reservoir dynamics and impact analysis of dam construction, optimal reservoir operation, climate change impacts on hydrological processes and water management, and integrated catchment management.
Author : C. A. Brebbia
Publisher : WIT Press
Page : 473 pages
File Size : 55,5 Mb
Release : 2012-05-22
Category : Technology & Engineering
ISBN : 9781845647124
Containing papers presented seventh international conference on the topic, this book Reviews the advances have been made in the development and application of software tools for predicting the flow, water quality, sediment transport and ecological processes in river systems. Organised by the Wessex Institute of Technology, the biennial conference was first held in 2001. The papers presented at the Conference address Water resources management; Flood risk management; Ecological and environmental impact; Erosion and sediment transport; Hydrological modelling; Sustainable rivers; Rivers and tourism; River restoration and rehabilitation; Hydropower impacts and solutions; River and watershed management; Integrated management; Water quality issues; Eutrophication and agricultural Pollution; Trans-boundary river issues; Estuaries, deltas and lagoons; Changing climate and adaptive water Management; Droughts and desertification; Wetlands; Water and health; Socio-economic and political issues; Water governance and water justice.
Author : Ljiljana Spasic-Gril
Publisher : CRC Press
Page : 204 pages
File Size : 49,7 Mb
Release : 2022-09-12
Category : Technology & Engineering
ISBN : 9781000646443
This book addresses current international practices applied for dam safety assessments by looking at a portfolio of dam safety projects in various developing countries (Armenia, Georgia, Tajikistan, Mauritius, Madagascar, Sri Lanka, Myanmar and Vietnam) spread across three continents (Europe, Africa and Asia). Safety assessment involved the review of 134 existing dams and comparison with the best international practices. A large part of dam safety assessment involves understanding of dam hazards, standards applied in the design and maintenance, as well as expectation and social circumstances under which the dams have been designed and constructed in a particular country. For example, standards for design floods, ground investigation, selection of design soil parameters and design earthquakes etc. used are often either non-existent or inadequate, which could lead to an unsafe design. If there are no standards to be applied in dam design and construction, consultants are often under pressure from clients to come up with minimalistic investigation and designs, which, after a few years after dam construction, show signs of deficiencies. Very often countries have no regulations and standards for requirements that should cover the maintenance and operation of dams. The book also describes the Portfolio Risk Assessment of Dams, which can be used as a tool by clients and the funding agencies to identify priority assessment and rehabilitation projects that consider societal and economic losses. It also demonstrates how the implementation of Emergency Preparedness Planning could significantly reduce the number of people at risk. This book aims to help clients, consultants and funding agencies which are engaged in dam safety assessment projects in developing countries to focus on issues that are based on past lessons learnt.
Author : Anton J. Schleiss,Giovanni de Cesare,Mario J. Franca,Michael Pfister
Publisher : CRC Press
Page : 300 pages
File Size : 44,8 Mb
Release : 2014-08-12
Category : Technology & Engineering
ISBN : 9781315736914
Despite the mechanisms of reservoir sedimentation being well known for a long time, sustainable and preventive measures are rarely taken into consideration in the design of new reservoirs. To avoid operational problems of powerhouses, sedimentation is often treated for existing reservoirs with measures which are efficient only for a limited time.Th
Author : G.W. Annandale
Publisher : Elsevier
Page : 220 pages
File Size : 45,5 Mb
Release : 1987-01-01
Category : Science
ISBN : 0080870201
Research on reservoir sedimentation in recent years has been aimed mainly at water resources projects in developing countries. These countries, especially in Africa, often have to cope with long droughts, flash floods and severe erosion problems. Large reservoir capacities are required to capture water provided by flash floods so as to ensure the supply of water in periods of drought. The problem arising however is that these floods, due to their tremendous stream power, carry enormous volumes of sediment which, due to the size of reservoirs, are virtually deposited in toto in the reservoir basin, leading to fast deterioration of a costly investment. Accurate forecasting of reservoir behaviour is therefore of the utmost importance. This book fills a gap in current literature by providing in one volume comprehensive coverage of techniques required to practically investigate the effects sediment deposition in reservoirs has on the viability of water resources projects. Current techniques for practically estimating sediment yield from catchments, estimating the volume of sediment expected to deposit in reservoirs, predicting sediment distribution and calculating scour downstream of reservoirs are evaluated and presented. The liberal use of diagrams and graphs to explain the various techniques enhances understanding and makes practical application simple. A major feature of the book is the application of stream power theory to explain the process of reservoir sedimentation and to develop four new methods for predicting sediment distribution in reservoirs. The book is primarily directed at practising engineers involved in the planning and design of water resources projects and at post-graduate students interested in this field of study.
Author : Kondolf
Publisher : Wiley-Blackwell
Page : 288 pages
File Size : 54,5 Mb
Release : 2018-05-11
Category : Electronic
ISBN : 1119302757