绩溪抽水蓄能电站下水库软岩筑面板堆石坝优化设计

Optimized design of soft-rock constructed reinforced concrete face rockfill dam for Jixi Pumped Storage Hydropower Station

安徽省绩溪抽水蓄能电站下水库钢筋混凝土面板堆石坝采用软岩填筑,最大坝高59.1 m。招标、技施阶段,对下水库大坝坝坡、坝体分区、坝基开挖、填筑控制标准等进行了优化设计。通过大坝三维有限元分析,论证了软岩筑坝材料的填筑参数及允许填筑范围,从而评价优化设计的合理性。

The reinforced concrete face rockfill dam with the maximum height of 59. 1 m for the lower reservoir of Jixi Pumped Storage Hydropower Station in Anhui Province is constructed with soft-rock filling material. During the phases of tendering and technical design, optimizations are made on the designs of the dam slope, dam zoning, dam foundation excavation, filling con- struction control criteria, etc. for the dam of the lower reservoir. Through a 3 - D finite element analysis on the dam, the filling parameters of the soft-rock dam filling material and its allowable range of the filling are demonstrated, and then the reasonability of the optimized design is evaluated as well.