响洪甸抽水蓄能电站地下厂房设计

Design of Wnderground Powerhouse of Xianghongdion Pumped-Storage Power Station

响洪甸混合式抽水蓄能电站位于安徽省西部金寨县境内，上库为响洪甸水库，下库建在响洪甸水库大坝下游河道上，引水系统修筑在土库左岸，厂房为地下式布置．地下厂房上覆岩层厚为52～102m，岩性主要为粗面提灰岩和火山角砾岩，大部为Ⅰ～Ⅱ类围岩，个别属Ⅲ类围岩．地下厂房喷锚支护设计喷层厚为15～10cm，锚杆直径φ25，长度4～6m，挂网筋为今12～φ10，网孔尺寸为2cm×2cm，厂房内采用岩壁吊车梁方案，岩壁梁受拉措林采用上下两排φ32，长10m，间隔10m，倾角分别为30°和25°的钢筋锚入岩体，受压构造锚杆一排φ25，长6m，间隔10m。

Xianghongdian Pumped-Storage Power Station with 120 MW installed capacity is combined by a new building pumped-storage power station with 80 MW installed capacity and a ordinary hydropower plant constructed in 1950's. The undergroung house structure is selected for new building plant, it is first undergroung house built in Anhui Province and under constructing at present. This paper make a brief introduction for some specialities of underground house caverns layout.