峡山水电站泄水闸下泄单宽流量大,运行工况及水力条件复杂。为确保工程安全经济,对泄流宽度和堰顶高程进行了精心比选;闸室结构采用倒T型结构,消能采用底流消能方式,对断层破碎带进行了混凝土塞加固和固结灌浆。 Xiashan Hydropower Station discharge sluice single wide flow, operating conditions and hydraulic conditions are complex. In order to ensure the safety and economy of the project, the drainage discharge width and weir crest elevation were carefully compared and selected. The structure of the sluice chamber was inverted T-shaped structure, and the energy dissipation by underflow was used to reinforce the fault broken zone with concrete plug and consolidation grouting .