基于GEO-Slope方法的危岩体边坡稳定性研究  

Study on Stability of Dangerous Rock Slope Based on GEO-Slope Method

作　　者：张良建 卢丙清 徐佩华[2,3] 杨爱平[4] 

机构地区：[1]重庆市地质勘查开发局南江水文地质工程地质队,重庆401147 [2]吉林大学建设工程学院,长春130026 [3]成都理工大学地质灾害防治与地质环境保护国家重点实验室,成都610059 [4]四川省地质矿产勘查开发局207地质队,四川乐山614000

出　　处：《地下空间与工程学报》2010年第A02期1587-1590,共4页Chinese Journal of Underground Space and Engineering

基　　金：博士后基金(20070411147)

摘　　要：水能资源富集的西部地区,深切河谷高陡岸坡稳定性问题严重制约了水电建设项目的顺利进行。锦屏一级水电站的高陡边坡稳定性问题十分突出,其左岸1#危岩体边坡即为典型案例之一。1#危岩体边坡为缆机平台边坡,其稳定与否直接关系到缆机平台的顺利开挖。本文运用GEO-Slope方法对其进行了稳定性研究,结果表明,其潜在失稳范围的后缘边界为黄斑岩脉X,底边界为f_(LL2)断层。开挖后该范围块体基本处于极限平衡状态,再加上施工扰动,基本不能自稳,因此建议在开挖前采取相应的支护措施。The stability of high steep slope severely restricts the hydropower projects to construct smoothly in the west China with rich hydropower. The problem of stability of Jingping First Stage Hydropower Station is prominent, and the No. 1 rock mass slope at the left bank is one of typical cases of stability problem. The No. 1 rock mass slope is the cable crane platform slope whose stability directly relates to that whether the cable crane platform can be exca- vated successfully. This paper applies the GEO-Slope to research the stability of slope and the result shows that the tailing-edge boundary of potential instable range is yellow spot dike X and the bottom boundary is fLI2 fault. After excavation, the masses are in the state of limit equilibrium in this range and add the perturbation of excavation which lead the slope not to keep stability by itself basically. Therefore, we suggest that before excavation, some relevant measures should be taken to support and protect the slope.

关 键 词：高边坡 有限元法 极限平衡法 稳定性 

分 类 号：P642.22[天文地球—工程地质学]