三里坪水电站瓦洼沟料场高边坡稳定性研究

三里坪水电站工程砂石骨料需求量大，对开挖瓦洼沟料场将形成的高边坡进行了整体稳定性研究。针对4种开挖方案进行了有限元计算分析，着重考虑了边坡开挖卸荷作用下典型剖面的变形与应力变化，计算结果表明，采用优化开挖方案，其边坡整体位移与拉应力变幅不大，在采取局部地质缺陷处理和导排水措施后，可保证开挖后边坡的整体稳定。

Study on high slope stability of Wawagou material field for Sanliping Hydropower Station

The sandstone aggregate demand of Sanliping Hydropower Station is huge,so the study of overall stability of high slope of Wawagou material field is conducted.According to the analysis of FEM calculation of 4 excavation schemes,the variation of deformation and stress of typical profile under excavation unloading is focused.The results show that the amplitude of displacement and tensile stress of slope are not large with the adoption of the optimized scheme.After the treatment of local geological defects and drainage,the overall stability of slope after excavation can be guaranteed.