基于极限平衡理论的外贸路南侧边坡稳定性分析

Stability Analysis of South Side Slope of Waimao Road Based on Limit Equilibrium Theory

在基于外贸路南侧边坡区域工程概况及宏观分析的基础上,确定使用极限平衡理论中的圆弧滑动条分法对外贸路南侧边坡局部及整体性的稳定性进行定量计算。通过地质勘察结果对计算参数进行取值,采用圆弧滑动条分法计算滑坡的稳定性系数F,计算结果表明:边坡局部稳定性验算时,正常工况下处于稳定状态,暴雨工况下处于非稳定状态;边坡整体稳定性验算时,正常及暴雨工况下均处于稳定状态;根据稳定性计算结果,分析边坡失稳原因,并提出了坡顶裂缝灌浆、坡体松散土强夯、坡脚挡墙的处治措施。

Based on a macro analysis of the engineering survey of the south slope of Waimao road,a quantitative calculation has thus been made of the local and overall stability of the south side slope of Waimao road by using the circular arc sliding slice method in the limit equilibrium theory.The calculated parameters are evaluated by geological survey results,while the stability coefficient Fof the landslide is calculated by using the circular arc sliding slice method.The calculation results show that the local stability of the slope is in a stable state under normal working conditions,while in an unstable state under the condition of rainstorm,the overall stability of the slope is checked,whereas it is stable under normal and rainstorm conditions;based on the results of stability analysis,an analysis has been made of the causes of slope instability,followed by some measures put forward for the treatment of crack grouting at the top of slope,dynamic compaction of loose soil on the slope,as well as retaining wall at the toe of slope.