考虑降雨条件的边坡稳定性及加固方案研究

Study on Slope Stability and Reinforcement Scheme Considering Rainfall Condition

以某路堑边坡滑坡治理工程为对象,采用数值模拟手段分析了路堑边坡在坡顶荷载和降雨历时长短因素影响下的稳定性变化规律。分析结果表明:边坡在坡顶荷载和降雨单个工况下是稳定的,但在坡顶荷载和降雨共同作用下,边坡的稳定性不足,沿土层交界面发生了滑坡破坏。在此基础上提出了以桩板挡墙为主要支挡结构的滑坡加固方案,并通过数值模拟验证了治理方案的有效性,提高了边坡的稳定性。

Focusing on treatment engineering for a cutting slope landslide,the numerical simulation was used to analyze the change in the stability of the cutting slope affected by the slope top load and rainfall duration.The analysis showed that under the single working condition of the slope top load or the rainfall,the slope was stable,but under the combined action of the slope top load and the rainfall,the slope was unstable and landslide failure occurred along the soil interface.On this basis,a landslide reinforcement scheme was proposed that using the pile plate retaining wall as the main retaining structure,and its effectiveness was verified by the numerical simulation,improving the slope stability.