三里坪水电站两岸坝肩主要地质缺陷及处理措施  

Main Geological Defects and Treatment Measures of Both Sides of Dam Abutment of Sanliping Hydroproject

作　　者：朱云法[1] 徐复兴[1] 吴蒙蒙[1] 

机构地区：[1]水利部长江勘测技术研究所,湖北武汉430011

出　　处：《资源环境与工程》2016年第3期335-338,368,共5页Resources Environment & Engineering

摘　　要：三里坪水电站坝址区地质构造条件复杂,左坝肩多发育缓倾角裂隙,右坝肩有F5断层及一组顺河向小断层,均对坝基的抗滑稳定有一定的不利影响,通过宏观地质分析以及基于裂隙连通率的结构稳定性计算,最终采用左岸大直径混凝土置换洞、右岸EL306～345 m分层设置置换洞的工程处理措施,有效保证了大坝的安全。The geological condition of Sanliping dam foundation is complicated due to tectonic action. In left abutment, there exisits lots of qentle-angle fracture, and in fight abutment exists the F5 fault and a set of small faults parallel to fiver. Which is unfavorable to the dam stability against sliding. Through macro-geological analysis and the structural stability calculation combined of fracture connectivity, the engineering treatment measures are used to effectively ensure safety of the dam, through the large diameter concrete replacement hole on the left bank, and hierarchical replacement hole between EL306 - 345 m on the right bank.

关 键 词：缓倾角裂隙 顺河向断层 裂隙连通率 置换洞 三里坪水电站 

分 类 号：TV642.42[水利工程—水利水电工程] P64[天文地球—地质矿产勘探]