乌江彭水水电站f1断层分布特征及处理措施

Distribution characteristics of f1 fault of Pengshui Hydropower Station and treatment measures

乌江彭水水电站地处中低山碳酸盐岩地区,坝址区断裂构造发育,尤其是f1断层规模大,断层厚度及影响带宽度较大,断裂构造带一般岩体破碎,易风化,沿断层岩溶现象也较发育。研究f1断层的分布规律和断层带的性状特征,有利于枢纽建筑物总体布置。重点阐述了f1断层带施工期开挖揭示情况及工程处理方案设计,所得结论对水电站工程宽大断层处理以及保证施工安全均有指导意义。

Pengshui Hydropower Station is located in lower and middle mountainous area, which is a carbonate rock area as well. In the dam area, the fault structures developed, especially, the scale of flfauh is in large scale, and so are the thickness and influential zone. The rock mass in fault tectonic zone are fractured and easy to be weathered, and karst develops along the fault. The distribution laws of fl fault and the characteristics of fault belt are studied, which is beneficial to optimizing the general layout of hydraulic structures. The excavation reveals of fl and design of treatment measures are described, which can be referred by treatment of spacious faults in hydropower stations.