Tigrek / Aras Reservoir Sediment Management

Erscheinungsjahr 2012
ISBN: 978-1-4665-1271-9
Verlag: Taylor & Francis
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 226 Seiten

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.

Autoren/Hrsg.

Tigrek, Sahnaz

Aras, Tuce

Fachgebiete

• Geowissenschaften Geologie Geotechnik
• Technische Wissenschaften Bauingenieurwesen Wasserbau
• Technische Wissenschaften Umwelttechnik | Umwelttechnologie Wasserversorgung, Wasseraufbereitung
• Technische Wissenschaften Bauingenieurwesen Dämme, Wasserspeicher und Talsperren (Bauingenieurwesen)
• Geowissenschaften Umweltwissenschaften Wasserversorgung

Inhaltsverzeichnis

List of Figures
List of Tables
List of Symbols
Abbreviations

Foreword
Acknowledgment
1 Conceptual framework of reservoir sedimentation

1.1 World reservoir sedimentation

1.2 Changing paradigm from design life approach to a life cycle approach
1.3 Sustainable development of basin water storage capacity

2 Theoretical aspects of sediment transport

2.1 Sediment properties

2.2 Modes of sediment transport

2.3 Siltation mechanism

2.4 Prediction of reservoir deposition

2.4.1 Prediction of the useful life of a reservoir

2.5 Mathematical models

2.5.1 Saint-Venant-Exner equations

2.5.2 Developed methods for the solution of Saint-Venant equations

2.5.3 Developed computer models for aggradation and degradation processes

2.5.3.1 Prediction of delta formation

2.5.4 Application of DELTA

2.5.5 Comparison with the sediment data of Çubuk 1 Dam Reservoir

3 Techniques for preventation of sediment deposition

3.1 Preventing sediment inflow

3.1.1 Watershed management

3.1.2 Upstream check structures (Debris dams)

3.1.3 Reservoir bypass system

3.2 Sustainable management of the dams

3.2.1 Evacuation of sediments from reservoir

3.2.1.1 Flushing
3.2.1.2 Sluicing

3.2.1.3 Density current venting

3.2.1.4 Mechanical removal

3.2.2 Management techniques of sediment within a reservoir

3.3 Lost storage replacement techniques and decommissioning

3.3.1 Raising dam height

3.3.2 Building a new dam

3.3.3 Decommissioning

4 Performance of reservoir conservation model

4.1 The general working principle of RESCON

4.2 Working principle of RESCON for technical optimization

4.2.1 Technical principle of flushing in RESCON

4.2.2 Technical principle of HSRS in RESCON

4.2.3 Traditional dredging and trucking technical principle in RESCON

4.3 Economic optimization working principle of RESCON

4.3.1 Flushing

4.3.2 HSRS 81
4.3.3 Dredging (traditional)

4.3.4 Trucking

4.3.5 Unit cost of the evacuation methods used in RESCON

4.4 Evaluation and comments about economic results of RESCON

5 Cost analyses

5.1 Case studies from Turkey

5.2 Historical background of dam construction in Turkey: Experience, lessons, malpractices

5.2.1 Reservoir sedimentation in Turkey

5.2.2 River basins

5.2.3 Measurement of deposition in reservoir lakes

5.3 Case studies for water supply dams

5.3.1 Economical Parameters in Turkey for case studies

5.3.2 Selection criteria for dams

5.3.3 Domestic water supply dam, Çubuk Dam-I
5.3.4 Irrigation water supply dam, Ivriz Dam

5.4 Case studies for hydropower dams

5.4.1 General overview of Coruh Basin Project

5.4.1.1 Muratli dam

6 Sensitivity analysis of RESCON

6.1 Unit value of the reservoir yield

6.2 Discount rate

6.3 Market interest rate

6.4 Salvage value

6.5 Discussions about RESCON input values

6.5.1 Unit Benefit of Reservoir Yield (P1)

6.5.2 Total cost of dam construction

6.5.3 Salvage value

6.6 Strength and limitations of RESCON

References

Appendix

Subject Index