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Spillway Crest Development through Model Testing on Chenderoh Ambursen Dam

by Jaro J. Vocadlo, Shawingan Lavalin Inc., Canada,
R. M. King, Shawingan Lavalin Inc., Canada,
F. E. Parkinson, Shawingan Lavalin Inc., Canada,



Document Type: Proceeding Paper

Part of: Waterpower '89

Abstract:

The Chenderoh Hydroelectric Project on the Perak River in Malaysia was placed in service in 1930. The hollow Ambursen dam was modified in 1944 by the additions of a concrete cap with flashboards. The modification reduced the spillway capacity and resulted in negative pressures and vibration. The removal of the crest cap and its replacement with an inflatable rubber dam was recommended. However, concerns over removal of the cap and over the service life and behaviour of the rubber dam led to the review of this recommendation and to the evaluation and model testing of three options; the proposed solution with an inflatable crest, the present geometry, and a modified hump crest. The model studies on two 1/40 scale reproductions of the spillway and sector gate sections were carried out in glass flumes. Study results are discussed.

Subject Headings: Dams | Spillways | Hydro power | Feasibility studies | Developing countries | Project management | Power plants | Malaysia | Asia

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