【摘要】 西龙池抽水蓄能电站位于山西省五台县境内,总装机容量为1 200 MW,额定发电水头640 m。地下厂房开挖尺寸(长×宽×高)为149.3 m×23.5 m×49.0 m。厂区岩性为泥质鲕状灰岩、薄层条带状灰岩、薄层石英粉砂岩,近水平产状;厂房轴线与主要断层、裂隙成大角度相交。地下厂房围岩位移、锚杆应力呈明显各向异性特点,且边墙围岩位移平均值为3.0 mm、锚杆应力平均值为45 MPa,均较小,构成了近水平薄层灰岩、粉砂岩互层岩体内地下厂房围岩位移、应力特点。更多还原

【Abstract】 The Xilongchi pumped storage power station,located in Wutai county,Shanxi province,has total installed capacity of 1 200 MW with a rated generating head of 640 m.The three dimensions of its powerhouse are 149.3 m,23.5 m and 49.0 m.The strata in the powerhouse area are composed of argillaceous oolitic limestone,thin banded limestone and thin quartz siltstone with almost horizontal occurrence.The axis of the powerhouse intersects the main faults and fissures with large angles.Displacement and anchor bar stress of the surrounding rock are characterized by obvious anisotropy,and the surrounding rock displacement(mean 3.0 mm) and the anchor bar stress(mean 45 MPa) are relatively small.更多还原