Reservoir Sedimentation

Reservoir Sedimentation

1st Edition - January 1, 1987

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  • Author: G.W. Annandale
  • eBook ISBN: 9780080870205

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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.

Table of Contents

  • 1. Problems Related to Reservoir Sedimentation. 2. Open Channel Hydraulics. Introduction. Reynolds Transport Theorem. Conservation of Mass. Conservation of Energy. Conservation of Linear Momentum. Specific Energy. Uniform Flow. Nonuniform Flow. Summary. 3. River Behaviour. Introduction. The Fluvial System. The Transfer Zone. Stability. Engineering Analysis. Conclusion. 4. Sediment Transport Theories. Rottner (1959). Einstein's Bed Load Equations (1942, 1950). Bagnold. Engelund and Hansen (1967). Laursen. Einstein's (1950) Total Load Equation. Bishop, Simons and Richardson (1965). Ackers (1972) and White (1972). Graf and Acaroglu (1968). Toffaletti (1968). Blench (1964). Kalinske (1947). Yalin (1963). Stream Power Theory. Evaluation. 5. Estimation of Sediment Yield. Global Sediment Yield. Techniques of Estimation. 6. Preventative Measures. Controlling Sediment Discharge. Controlling Sediment Deposition. Removal of Deposited Sediment. Conclusion. 7. Distribution of Deposited Sediment. Borland and Miller (1958). Menné and Kriel (1959). Borland (1970). Other Models. Conclusion. 8. Stream Power Theory. Stable Non-Equilibrium Conditions. Unstable Non-Equilibrium Conditions. Conclusion. 9. Scour Downstream of Reservoirs. Introduction. Armouring. Scour. Conclusion. References. Index.

Product details

  • No. of pages: 220
  • Language: English
  • Copyright: © Elsevier Science 1987
  • Published: January 1, 1987
  • Imprint: Elsevier Science
  • eBook ISBN: 9780080870205

About the Author

G.W. Annandale

Affiliations and Expertise

Rand Afrikaans University, Johannesburg, South Africa

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  • samuel b. Thu Nov 03 2022

    application of RS for reservoir sedimentation assessment

    Reservoir sedimentation is a severe problem faced by dams, which is almost immeasurable at source and occurs in the catchment areas of the reservoirs. Sediment accumulation in a reservoir changes the regularized flow, the capacity of power generation, and the service of other non-consumptive and consumptive uses of water. Hence the critical assessment of sediment disposition at each of the major and medium reservoirs became necessary, so that to ascertain the current reservoir live storage capacity for efficient and productive management of water resources and if any catchment area treatment needed can be applied in time.