贵州铜仁某公路边坡滑坡稳定性分析及治理措施研究

Stability Analysis and Treatment Measures of a Highway Landslide in Tongren, Guizhou

贵州铜仁某二级公路边坡在施工时出现滑移,通过现场勘测裂缝位置、形态,估计滑移面位置,并结合地质钻探确定地层厚度与类型。运用Geo-slope软件进行滑坡模拟,根据边坡现状反演地层参数,采取设置抗滑桩加固措施,边坡稳定安全系数达到1.275,满足规范要求。施工期对主滑断面实施滑坡监测,测点水平位移与竖向位移均不超过20 mm,表明该滑坡治理效果显著。

Slippage appeared during the construction of a secondary highway slope in Tongren,Guizhou.The location and morphology of fractures are investigated on site to estimate the location of slip plane and the formation thickness and type are determined by combining with geological drilling.The Geo-slope software is used to simulate the landslide.According to the current situation of the slope,the stratum parameters are inversed,and the anti-slide pile is set to reinforce the slope,so that the slope stability safety factor reaches 1.275,which meets the requirements of the specification.The horizontal and vertical displacements of the monitoring points are less than 20 mm by carrying out landslide monitoring during the construction of the main sliding section,which indicates that the landslide control effect is remarkable.