Design and Performance of Diversion Gates at Peace Canyon Dam

by Michael A. Watson, British Columbia Hydro & Power, Authority, Canada,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

During construction of Peace Canyon Dam, river diversion was accomplished using a combination of cofferdams and temporary diversion conduits through the partially completed dam. Inlet gates were provided to close the conduits. During first filling of the reservoir, the concrete diversion conduits experienced progressive damage due to erosion and cavitation. One of the gates then failed to close, resulting in emergency reopening of all diversion gates, to allow the reservoir to be lowered for inspection and repair of the conduits. This paper presents an outline of the diversion sequence, and discusses the problems encountered during closure of the diversion conduits.

Subject Headings: Conduits | Dams | Hydraulic structures | Gates (hydraulic) | Concrete dams | Canyons | Rivers and streams

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