Design of Cascade Stilling Basins for High Dam Spillways
Publication: Journal of Hydraulic Engineering
Volume 113, Issue 2
Abstract
Conventional methods of energy dissipation by single‐fall hydraulic jump‐type stilling basin, roller bucket, or ski‐jump bucket may not be suitable for high dam spillways because of very high velocities at the end of the spillway, inadequate tailwater depths, and/or site conditions. A suitable spillway alternative can be a cascade of falls with a stilling basin below each fall. This spillway can be constructed on the side of the valley downstream of the dam. Relationships for cascading stilling basins have been developed and demonstrated by the numerical example of the 714.76‐ft (218.00‐m) high Tehri dam spillway on the Bhagirathi River in the Ganga Valley of the Central Himalayas.
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References
1.
Mohan, Jagdish, Tiaga, S. S., and Gupta, P. P. (1984). “Energy dissipation and Tehri and Lakhwar Dams,” J. Instn. Engrs., India, 64–68.
2.
Poggi, Bruno. (1949). “Sopra gli scaricatori a scala di stramazzi.” L'Energia elettrica, 26(10), 600–604.
3.
Poggi, Bruno. (1956). “Lo scaricatore a scala di stramazzi: Criteri di calcolo e rilievi sperimentali.” L'Energia elettrica, 33(1), 33–40.
4.
U.S. Bureau of Reclamation. (1958). “Hydraulic design of stilling basins and bucket energy dissipators.” Engrg. Monograph No. 25, U.S. Dept. of Interior, Bureau of Reclamation, Denver, Colo.
Information & Authors
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Published In
Journal of Hydraulic Engineering
Volume 113 • Issue 2 • February 1987
Pages: 225 - 237
Copyright
Copyright © 1987 ASCE.
History
Published online: Feb 1, 1987
Published in print: Feb 1987
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