集水廊道顶部充水溶洞对围岩位移的影响——以石林水库为例  

Study on water-filled cave's influence on catchment channel displacement of surrounding rock——taking Shilin reservoir for example

作　　者：李亚云[1] 陈婷[1] 莫世远 张营营[1] 徐枫[1] 

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002

出　　处：《黑龙江水利》2015年第10期23-26,共4页

摘　　要：岩溶地区充水溶洞的存在对水工地下洞室的安全施工造成了很大的影响,研究充水溶洞对水工地下洞室围岩位移的影响,保证在岩溶地区安全地修建水工地下洞室是目前急需解决的问题。本文依托石林水库工程,采用有限元软件abaqus进行三维数值模拟,分析了不同大小和不同距离的顶部充水溶洞对集水廊道围岩位移的影响,得出以下结论,集水廊道顶部充水溶洞对廊道各特征点的位移有一定抑制作用,相比无溶洞时位移减小,廊道侧壁以上总体围岩位移与溶洞大小以及溶洞顶到廊道顶间竖直距离成反比,廊道底部总体围岩位移与溶洞大小成反比,与溶洞到廊道竖直距离成正比。The existence of water filled cave in karst area has caused a great impact on the safety of underground cavern. Research on the effect of water filled cave on hydraulic underground surrounding rock displacement caverns, to ensure the construction of hydraulic underground caverns safely in karst areas is an urgent problem. Relying on the shilin reservoir engineering, the finite element analysis software abaqus is adopted to analyze and simulate the catchment channel displacement of surrounding rock of different size and different distance water-filled cave, the following conclusions are drawn, the water- filled cave at the top of the catchment channel has certain inhibitory effect on displacement of surrounding rock, displacement is reduced compared to the non-cave, and corridor wall above the surrounding rock displacement and karst cave is inversely proportional to the size and the distance between the cave to the corridor of the vertical distance, corridor is inversely proportional to the displacement of surrounding rock and at the bottom of the cave size, is proportional to the cave to the corridor of the vertical distance.

关 键 词：顶部充水溶洞 集水廊道 围岩位移 

分 类 号：TU457[建筑科学—岩土工程]