Dynamic Programming Approach to Optimal Design of Cascade Stilling Basins
Publication: Journal of Hydraulic Engineering
Volume 133, Issue 8
Abstract
Energy dissipation systems such as single fall-stilling basin and single chute bucket have been used in the design and construction of large dams. In the case of high head structures, however, due to the high flow velocity, these systems suffer from problems such as cavitation, vibration, and abrasion. As an alternative, a cascade system could be used, which is a cascade of falls and stilling basins below each fall. A procedure has been developed for optimum design of cascade stilling basins using dynamic programming as an optimization technique to minimize the excavation and concrete-work costs with given geometric parameters of the system. Based on this procedure, a computer model was developed and examined in the design of the Tehri Dam in India as a case study. Evaluation of the model results and comparing them with those obtained by a model not using an optimization tool shows 31% of improv6ement with regard to the minimization of concrete and excavation volumes and consequently construction costs.
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Acknowledgments
The writers would like to thank P. T. Shourijeh and B. Sharif for their help in reviewing and editing the manuscript and two anonymous reviewers for the very useful comments they made.
References
Mays, L., and Tung. (1992). Hydroststens engineering and management, McGraw–Hill, New York.
Poggi, B. (1956). “Lo scaricatore a scala di stramazzi: Criteri di calcolo e rilievi sperimentali.” Energ. Elettr., 33(1), 33–40.
U. S. Bureau of Reclamation (USBR). (1958). “Hydraulic design of stilling basin and Bucket energy dissipaters.” Engineering Monograph No. 25, U.S. Dept. of Interior, Bureau of Reclamation, Denver.
Vittal, N., and Porey, P. D. (1987). “Design of cascade stilling basins for high dam spillways.” J. Hydraul. Eng., 113(2), 225–237.
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© 2007 ASCE.
History
Received: Sep 22, 2005
Accepted: Sep 6, 2006
Published online: Aug 1, 2007
Published in print: Aug 2007
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