拉西瓦水电站泄洪消能优化设计中的几个水力学问题

Several hydraulics problems of the optimal design for flood releasing and energy dissipation in Laxiwa Hydropower Station

拟建的拉西瓦水电站双曲薄拱坝，坝高２５０ｍ，装机容量３７２万ｋＷ。优化后的泄洪消能方案，是“八五”国家重点科技攻关８５—２０８—０１—０４的研究成果。本项研究成果的简介扼要地论述了拉西瓦深孔体形及其水力特性；水垫塘水力特性；坝身泄洪流激振动特性；以及泄洪雾化影响范围及其防护。该研究成果已经在拉西瓦工程设计中应用。

The proposed Laxiwa Hydropower Station has an installed capacity of 3720 MW and a double-curvature thin arch dam of 250 m high. The optimal flood releasing and energy dissipation measures will be the study achievement of 85-208-01-04 subject, one of the key national scientific and technological subjects. This paper describes the Laxi wa deep hole configuration and its hydraulic characteristics, hydraulic characteristics of water cushion pool, dam vi bration characteristics by flood releasing, the atomization influence area by flood releasing and its protection. The study achievements have been applied in the design of Laxiwa Hydropower Station.