某高速公路典型缓倾顺层滑坡分析与治理研究

Analysis and Treatment Research on a Typical Gently Inclined Bedding Landslideof a Highway

以某高速公路缓倾顺层滑坡处治工程为依托,对滑坡的工程地质条件、变形特征,变形机理进行了深入分析。根据滑坡变形机理和滑坡推力计算,结合工程特点、施工环境等因素提出了双排抗滑桩支挡+锚索框架治理方案和清方减载+抗滑桩支挡治理方案,从技术、造价、施工、安全性等方面综合分析比选,选择清方减载+抗滑桩支挡方案作为滑坡治理方案。并从潜在滑面的选取、参数的取值、裂隙水压力和计算宽度等方面总结了顺层边坡预加固和顺层滑坡治理的关键因素。

Relying on the gently inclined bedding landslide treatment of a highway,the engineering geological conditions,deformation characteristics and deformation mechanism of the landslide are analyzed.According to the landslide deformation mechanism and landslide thrust calculation,combined with the engineering characteristics,construction environment and other factors,we have proposed a double-row anti-slide pile support+anchor cable frame treatment plan and remove earthwork load reduction+anti-slide pile support treatment plan.Based on the comprehensive analysis and selection of technology,cost,construction and safety,the scheme of remove earthwork load reduction+anti-slide pile support treatment plan is selected as the landslide treatment scheme.The key factors of pre-reinforcement of bedding slope and treatment of bedding landslide are summarized from the aspects of selection of potential sliding surface,value of parameters,fracture water pressure and calculation width.