巴山水电站大坝施工导流设计及优化

Diversion Design and Optimization for Bashan Hydropower Station

根据巴山水电站坝址处地形及地质条件、水文条件、枢纽建筑布置特点,大坝采用隧洞导流、枯水期围堰断流、汛期坝体临时断面挡水度汛的导流方式。施工图阶段,由于导流隧洞前期施工进度拖后,根据导流隧洞实际揭露的地质条件较好,及时对导流隧洞的衬砌设计进行了优化,并适当加高了上游围堰,保证工程顺利实施。

Based on the topographic and geologic condition, hydrological condition, and complex structure features of Bashan hydropower＇ station, tunnelreleasing water, dry-season-cofferdam cutting offwater, dam retaining water were used. Due to the schedule was delayed, and the geological condition was good, the lining design of diversion tunnel has been optimized during the technical construction design period. And the upper cofferdam has been properly heightened.