金安桥扩机项目地下洞室群主要工程地质问题评价

Evaluation of Main Engineering Geological Problems of Underground Cavern Groups in Jinanqiao Hydropower Station Extension Project

基于已有的勘探和开挖揭露成果,对金安桥水电站扩机项目地下洞室群的主要工程地质问题进行了分析评价。高地应力、凝灰岩软弱夹层以及断层破碎带是影响地下洞室群围岩稳定的主要问题。下一步的工作中应对其进行重点研究,以指导施工建设。

Based on the existing exploration and excavation results,this paper analyzed and evaluated main engineering geological problems of underground cavern group of the expansion project of Jin'anqiao Hydropower Station.High ground stress,weak interlayer of tuff and fault fracture zones are the main problems affecting the stability of the surrounding rocks in underground caverns group.The next work should focus on it to guide construction.