Mathematical Modelling Of Sediment Transport And Deposition In Reservoirs Guidelines And Case Studies Modélisation Mathématique Du Transport Et Des Dépôts De Sédiments Dans Les Réservoirs Lignes Directrices Et Études De Cas

Author : Cigb Icold
Publisher : CRC Press
Page : 334 pages
File Size : 42,7 Mb
Release : 2021-06-27
Category : Technology & Engineering
ISBN : 9781000383515

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Mathematical Modelling of Sediment Transport and Deposition in Reservoirs - Guidelines and Case Studies / Modélisation Mathématique du Transport et des Dépôts de Sédiments dans les Réservoirs - Lignes Directrices et Études de Cas by Cigb Icold Pdf

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 : Cigb Icold
Publisher : ICOLD Bulletins Series
Page : 300 pages
File Size : 41,5 Mb
Release : 2021-06-28
Category : Reservoir sedimentation
ISBN : 0367772280

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Mathematical Modelling of Sediment Transport and Deposition in Reservoirs - Guidelines and Case Studies / Modelisation Mathematique Du Transport Et Des Depots de Sediments Dans Les Reservoirs - Lignes Directrices Et Etudes de Cas by Cigb Icold Pdf

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 : Rabindra Nath Pati,Atul Kumar Jain
Publisher : Unknown
Page : 0 pages
File Size : 51,8 Mb
Release : 2010
Category : Biodiversity conservation
ISBN : 8176259942

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Biodiversity and Sustainable Development by Rabindra Nath Pati,Atul Kumar Jain Pdf

Papers presented at the First Global Summit on Sustainable Development and Biodiversity, held at Raipur during 7-9 February 2009.

Author : CIGB ICOLD
Publisher : CRC Press
Page : 295 pages
File Size : 54,9 Mb
Release : 2018-08-06
Category : Technology & Engineering
ISBN : 9781351035767

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Dam Surveillance Guide by CIGB ICOLD Pdf

Dams are part of human achievements that induce great benefits for society but also bear a potential risk to people, property and the natural environment. The risk of a dam rupture is extremely low and diffi cult to quantify accurately. The aim of ‘Dam surveillance’ (ICOLD Bulletin 158), is to help reduce these risks by early detection of an undesirable event. The objective of dam surveillance is to make a precise and timely diagnosis of the behavior of dams, in order to prevent undesirable consequences. Both the monitoring system and surveillance program has to be designed and should be able to detect any abnormal behaviour. ‘Dam surveillance’ (ICOLD Bulletin 158), emphasizes the following aspects: • Routine visual inspection • Special inspection • Checking and testing of Hydro-electromechanical equipment • Monitoring parameters and devices • Automation • Maintenance of ageing monitoring systems • Re-instrumentation of existing dams • Recent developments • Data management • Dam documentation management • Assessment of dam condition and behaviour • Assessment of routine dam safety monitoring programme • Prioritization of maintenance, remedial and upgrading works.

Author : Anonim
Publisher : Unknown
Page : 0 pages
File Size : 51,9 Mb
Release : 1995
Category : Electronic
ISBN : OCLC:1337220219

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Roller Compacted Concrete Dams by Anonim Pdf

Author : G.W. Annandale
Publisher : Elsevier
Page : 220 pages
File Size : 40,9 Mb
Release : 1987-01-01
Category : Science
ISBN : 0080870201

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Reservoir Sedimentation by G.W. Annandale Pdf

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 : Claudio Scardovi
Publisher : Springer
Page : 236 pages
File Size : 53,5 Mb
Release : 2017-09-04
Category : Business & Economics
ISBN : 9783319669458

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Digital Transformation in Financial Services by Claudio Scardovi Pdf

This book analyzes the set of forces driving the global financial system toward a period of radical transformation and explores the transformational challenges that lie ahead for global and regional or local banks and other financial intermediaries. It is explained how these challenges derive from the newly emerging post-crisis structure of the market and from shadow and digital players across all banking operations. Detailed attention is focused on the impacts of digitalization on the main functions of the financial system, and particularly the banking sector. The author elaborates how an alternative model of banking will enable banks to predict, understand, navigate, and change the external ecosystem in which they compete. The five critical components of this model are data and information mastering; effective use of applied analytics; interconnectivity and “junction playing”; development of new business solutions; and trust and credibility assurance. The analysis is supported by a number of informative case studies. The book will be of interest especially to top and middle managers and employees of banks and financial institutions but also to FinTech players and their advisers and others.

Author : Hugh Stevens Bell
Publisher : Unknown
Page : 52 pages
File Size : 45,5 Mb
Release : 1942
Category : Reservoir sedimentation
ISBN : UIUC:30112008446624

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Stratified Flow in Reservoirs and Its Use in Prevention of Silting by Hugh Stevens Bell Pdf

This publication presents new conceptions and new methods for protecting the larger of the reservoirs that may be built this year and next as part of the war program. It puts in the hands of engineers, agronomists, and others an increased knowledge of a subject of importance in the field of land use and good water use.

Author : Cigb Icold
Publisher : CRC Press
Page : 134 pages
File Size : 42,9 Mb
Release : 2021-08-09
Category : Technology & Engineering
ISBN : 9781000383225

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Dams and Water Transfers – An Overview / Barrages et Transferts d’Eau - Aperçu by Cigb Icold Pdf

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. Le présent Bulletin présente une réponse complète du « Comité Technique sur les barrages et les transferts d’eau ». Il commence par des informations mondiales, fait ressortir les efforts déployés dans des pays au climat, à l'économie, à la répartition de la population, etc. complètement différents sur l'état actuel au sein et entre les bassins fluviaux et les pays - à la fois excédentaire et / ou déficitaire, tout en reconnaissant le rôle crucial joué par les barrages dans le transfert d'eau vers les régions nécessiteuses. Il énumère ensuite les lignes directrices suivies pour considérer diverses options, tout en identifiant les problèmes géographiques, limités par les territoires politiques et les questions juridiques comme les traités sur l'eau. Essentiellement, il s'attarde donc sur les besoins, le potentiel et les problèmes possibles des transferts d'eau qui doivent être traités pour surmonter les problèmes auxquels sont confrontés les pays dans le besoin. Afin d'aider les professionnels concernés, le Bulletin élabore enfin les objections soulevées par les différents acteurs du sujet et apporte des réponses générées globalement. Le débat en cours dans le monde entier par rapport aux impacts environnementaux est ensuite traité pour aider les pays membres à surmonter divers problèmes.

Author : Cigb Icold
Publisher : CRC Press
Page : 199 pages
File Size : 43,6 Mb
Release : 2023-04-03
Category : Science
ISBN : 9781000382846

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Tailings Dam Design / Conception des Barrages de Stériles Miniers by Cigb Icold Pdf

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. Les stériles miniers sont produits à partir du traitement des minerais et sont généralement stockés derrière des barrages en remblai. La conception des barrages nécessite l'application de principes d'ingénierie solides et une compréhension des propriétés des résidus. Ce bulletin fournit un cadre pour classer différents types de résidus, allant de l'ultra-fin au grossier, en fonction de leurs propriétés géotechniques et propose des paramètres géotechniques typiques pour les différentes sortes de résidus. Les technologies d'assèchement des résidus pour réduire le risque de stockage continuent à être développées ; les différentes technologies, de l'épaississement à la filtration, en passant par l’application des anciennes technologies, sont présentées pour illustrer les options disponibles et, le cas échéant, les propriétés in situ typiques. Ce bulletin s'adresse à un large public d'intervenants : concepteurs, propriétaires, régulateurs, communautés et organisations diverses et fournit une référence pour communiquer les propriétés des résidus et les avantages et les limites des technologies. Toutes les opérations minières et, par conséquent, les traitements des résidus, sont uniques. Il n'y a pas de solution unique pour tous. La conception des barrages de résidus doit tenir compte des conditions propres au site, telles que le climat, la physiographie, la géochimie, la géomorphologie, la sismologie, les processus miniers, l'environnement et le milieu communautaire, l'application de technologies jouant un rôle important dans le développement de parcs à résidus sûrs et durables.

Author : Ivan Daley Wood,United States. Soil Conservation Service
Publisher : Unknown
Page : 548 pages
File Size : 43,7 Mb
Release : 1950
Category : Irrigation
ISBN : STANFORD:36105113798784

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Pumping for Irrigation by Ivan Daley Wood,United States. Soil Conservation Service Pdf

This publication covers a wide variety of aspects in pump irrigation, ground water, water wells, and costs involved in the use of ground water for irrigation.

Author : Cigb Icold
Publisher : CRC Press
Page : 206 pages
File Size : 45,9 Mb
Release : 2021-06-10
Category : Technology & Engineering
ISBN : 9781000382754

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Dam Safety Management / Gestion de la Sécurité des Barrages by Cigb Icold Pdf

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. La gestion de la sécurité des barrages est une préoccupation majeure pendant tout le cycle de vie d'un projet de barrage. Cela est particulièrement vrai pour la phase opérationnelle du système qui représente de loin la période la plus longue de son cycle de vie. Le Bulletin 154 présente une approche générale et des concepts à appliquer à l'exploitation des barrages. Le Bulletin 175 actuel étend les concepts développés à toutes les phases précédant la phase d'exploitation. De nombreux risques associés à l'exploitation des barrages existants ont leur origine dans d'autres phases précédant l'exploitation proprement dite. Bien qu'il existe de nombreux bulletins ICOLD traitant des aspects techniques de la planification, de la conception, de la construction et de la mise en service des barrages, il n'existe pas un seul bulletin qui couvre le sujet de manière exhaustive. Le document actuel est une première tentative de capturer tous les aspects pertinents de la sécurité des barrages dans toutes les phases pré-opérationnelles en caractérisant systématiquement les acteurs impliqués, leurs rôles, les activités et les interactions complexes présentes dans les différentes phases du cycle de vie du barrage. Un système global de gestion de la sécurité est spécifiquement développé et peut être appliqué à tous les acteurs impliqués.

Author : Grove Karl Gilbert
Publisher : Hardpress Publishing
Page : 284 pages
File Size : 53,5 Mb
Release : 2012-01
Category : Electronic
ISBN : 1290169772

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The Transportation of Débris by Running Water by Grove Karl Gilbert Pdf

Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

Author : Donna McLin
Publisher : Unknown
Page : 382 pages
File Size : 51,9 Mb
Release : 2019-12
Category : Electronic
ISBN : 1701917068

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Simply This... Amen. by Donna McLin Pdf

This prayer book was written over a two-year span. The prayers started one night when my daughter and I could not sync our time to pray together on one particular night in March 2017. While preparing for bed, the Lord said to me, "Just write a prayer and put it on Facebook". I did and the rest is history. You are now holding what it is that the Lord has done with these prayers. Each night with the exception of being away from home with no phone service, or during times of fasting, I wrote a prayer each night and posted them on Facebook. I have been told by many people along the way that they do not know how to pray. It is my prayer that this book will be a foundation for those who feel that they do not know how to pray or who simply need a prayer devotional.

Author : CIGB ICOLD
Publisher : CRC Press
Page : 27 pages
File Size : 53,8 Mb
Release : 2021-06-04
Category : Technology & Engineering
ISBN : 9781351035927

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Position Paper Dam Safety and Earthquakes by CIGB ICOLD Pdf

Earthquakes have always been a significant aspect of the design and safety of dams. This position paper deals with the seismic safety of large dams, based on experiences with large earthquakes in Japan (Tohoku earthquake, 2011, Richter magnitude 9.0), in China (Wenchuan earthquake, 2008, Richter magnitude 8.0) and in Chile (Maule earthquake, 2010, Richter magnitude 8.8). It presents ways to prevent key aspects of large dam failure under severe seismic conditions with a focus on design instead of on earthquake prediction. This is done by considering the prevention of uncontrolled rapid release of water of a storage dam under full reservoir conditions in relation to expected seismic conditions. This position paper is composed by the Committee on Seismic Aspects of Dam Design of The International Committee of Large Dams. Les tremblements de terre ont toujours été un aspect important de la conception et de la sécurité des barrages. Ce document de synthèse traite de la sécurité sismique des grands barrages, en se fondant sur l’expérience acquise lors de grands séismes au Japon (séisme de Tohoku, 2011, magnitude 9,0 sur l’échelle de Richter), en Chine (séisme de Wenchuan, 2008, magnitude 8,0 sur l’échelle de Richter) et au Chili (séisme de Maule, 2010, magnitude 8,8 sur l’échelle de Richter). Il présente des moyens de prévenir les aspects clés de la défaillance des grands barrages dans des conditions sismiques sévères en mettant l’accent sur la conception plutôt que sur la prévision des séismes. Pour ce faire, on examine la prévention d’une libération rapide et incontrôlée de l’eau d’un barrage de stockage dans des conditions de réservoir plein par rapport aux conditions sismiques prévues. Cet argumentaire est composé par le Comité sur les Aspects Sismiques des Projets de Barrages de la Commission Internationale des Grands Barrages.