Reservoir Sedimentation. II: Reservoir Desiltation and Long‐Term Storage Capacity
Publication: Journal of Hydraulic Engineering
Volume 118, Issue 3
Abstract
During the past 30 years, China has implemented structural and operational procedures to maximize sediment discharge from the impounded reaches of rivers, thereby reducing, arresting, or reversing reservoir sedimentation at many sites. Hydraulic methods used in China to preserve capacity are outlined in this paper, including sediment routing during floods, sediment flushing during floods, emptying and flushing, and density current venting. A method to compute retrogressive erosion during the drawdown of a reservoir is developed, and an approximate method for estimating the amount of sediment that can be vented from a reservoir as a density current is proposed. The computed values are compared with field data. Field data on the floodplain slope formed during flood season and the bottom slope of the main channel formed during nonflood season are analyzed. Empirical formulas for both slopes are presented for estimating long‐term storage capacity.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Akiyama, J., and Stefan, H. G. (1984). “Plunging flow into a reservoir: Theory.” J. Hydr. Engrg., ASCE, 110(4), 484–499.
2.
Fan, J. (1985). “Methods of preserving reservoir capacity.” Methods of computing sedimentation in lakes and reservoirs. UNESCO, Paris, France, 65–164.
3.
Fan, J. (1986). “Turbid density currents in reservoirs.” Water Int., 11(3), 107–116.
4.
Fan, J. (1960). “Experimental studies on density currents.” Scientia Sinica, 9(2), 275–303.
5.
Fan, J., Wang, H., Huang, Y., Wu, D., and Shen, S. (1959). Studies on density currents and their applications, Water Resour. and Power Press, Beijing, China, 179 (in Chinese).
6.
Fan, J., and Jiang, R. (1980). “On methods for the desiltation of reservoirs.” Int. Seminar of Experts on Reservoir Desiltation, Ministry of Agriculture, Tunis, Tunisia.
7.
Grover, N. C., and Howard, C. S. (1938) “The passage of turbid water through Lake Mead.” Trans. ASCE, 103, 720–790.
8.
Guo, Z., and Li, D. (1984). “Operation experiences of water and sediment regulation in Hengshan Reservoir.” Water Resour. Hydropower Engrg., 5. 1–8 (in Chinese).
9.
Lara, J. M. (1960). 'The 1957 sedimentation survey of Elephant Butte Reservoir. Bureau of Reclamation, U.S. Dept. of Interior, Denver, Colo.
10.
Nizery, A., Braudeau, G., and Bonnin, J. (1952). “La station du Sautet por l'étude de l'alluvionnement de reservoirs.” Compte Rendu des Deuxième Journées de l'Hydraulique, 180–218.
Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 118 • Issue 3 • March 1992
Pages: 370 - 384
Copyright
Copyright © 1992 ASCE.
History
Published online: Mar 1, 1992
Published in print: Mar 1992
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.