螺丝湾水电站引水隧洞施工前后围岩工程地质条件评价  

Assessment of Surrounding Rock Engineering Geological Conditions of Power Tunnel for Luosiwan Hydropower Station

作　　者：肖红光[1] 

机构地区：[1]国家电力公司昆明勘测设计研究院,云南昆明650051

出　　处：《云南水力发电》1999年第3期10-12,共3页Yunnan Water Power

摘　　要：螺丝湾电站引水隧洞总长５０４１ ｍ ，沿线主要为二迭系玄武岩，岩石坚硬。但断层、挤压破碎带及裂隙发育，据开挖揭露出的大小断层共５０ 条，挤压破碎带１８３ 条，隧洞经过这些地段，对围岩稳定有一定影响。总的说开挖前对地层岩性、地质构造。The power tunnel of the Luosiwan hydropower station, 5,041m long, is located in an area that consists mainly of Permian hard basalt, and is however characterized by developed faults, compressive fractured zones and fissures. Altogether 50 large and small faults and 183 compressive fractured zones were exposed during excavation. The rock excavation for the tunnel had certain impact on its surrounding rocks. The assessment of strata rock properties, geological structure, engineering geology and hydrogeology made before excavation is in line with that exposed after excavation.

关 键 词：引水隧洞 施工 工程地质评价 水电站 

分 类 号：TV732.3[水利工程—水利水电工程] P642[天文地球—工程地质学]