Diversion Conduit and Low‐Level Outlet for Punchiná Dam
Publication: Journal of Hydraulic Engineering
Volume 114, Issue 4
Abstract
This paper describes the design, construction, and performance of a cut‐and‐cover diversion conduit, which required applying some unconventional design concepts. The reasons for selecting a cut‐and‐cover conduit instead of a tunnel are also presented. The hydrological, hydraulic, and structural criteria for design of the conduit are explained, and the construction of the conduit and the problems that occurred during river diversion are also described. Finally, performance of the structure and its conformity to the design assumptions are analyzed.
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References
1.
Ghetti, A., and Di Silvio, G. (1967). “Investigation on the running of deep gated outlet works from reservoirs.” Proc. Ninth Congress of Large Dams, Istanbul, Turkey, 837–852.
2.
Pinto, N. L. de S., and Ota, J. J. (1976). “Concideracoes sobre o arrastramento de ar a jusante de descargas de fondo.” XI Seminario Nacional de Grandes Barragens, Fortaleza, Brasil, Novembro/Decembro (in Portuguese).
3.
Mejía, O., and Villegas, F. (1986). “Descarga de Fondo de la Presa de Punchiná: Description, análisis teóricos, ensayos sobre modelo hidráulico y medidas de campo para determinación de demanda de aire.” XII Congreso Latinoamericano de Hidráulica, Sao Paulo, Brasil, Agosto/Septiembre (in Spanish).
4.
Sharma, H. R. (1976). “Air entrainment in high head gated conduits.” J. Hydr. Div., ASCE, 102(11), 1629–1646.
5.
U.S. Corps of Engineers. (1964). “Hydraulic design of reservoir outlet structures.” EM 1110‐2‐1602, U.S. Corps of Engineers, Department of the Army, Washington, D.C.
6.
Villegas, F. (1982). “Difficulties during construction of the Punchiná Cofferdam.” Proc., Fourteenth Congress on Large Dams, Rio de Janeiro, Brazil, 1081–1101.
Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 114 • Issue 4 • April 1988
Pages: 396 - 408
Copyright
Copyright © 1988 ASCE.
History
Published online: Apr 1, 1988
Published in print: Apr 1988
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