地表水入渗耦合地下水渗流作用下边坡失稳研究  

STUDY ON SLOPE INSTABILITY UNDER THE COUPLING EFFECT OF SURFACE WATER INFILTRATION AND GROUNDWATER SEEPAGE

作　　者：解振乙 Xie Zhen-yi

机构地区：[1]贵州桥梁建设集团有限责任公司,贵州贵阳550000

出　　处：《建筑技术开发》2023年第12期130-132,共3页Building Technology Development

摘　　要：依托黔大高速公路东清段高边坡工程,分析地表水入渗与地下水渗流耦合作用下边坡失稳原因,并提出了针对性处治措施。场区上覆残坡积层粉质粘土,下伏基岩为砂质泥岩,遇水后大幅度削弱抗剪强度参数,降低抗滑力,致使边坡出现失稳下滑的安全风险,现场采取针对措施如下:边坡后缘裂缝进行粘土夯实封堵、设置截水沟、坡脚处设置大直径深孔泄水管,监测数据表明边坡深层位移逐渐收敛直至稳定,现场处理措施效果明显。Based on the slope in the Dongqing section of Guizhou-Dalian expressway K44+370~K44+820,the principle of slope instability under the action of surface water infiltration and groundwater seepage is analyzed.The slope site is covered with residual eluvial silty clay,and the underlying bedrock is sandy mudstone.After encountering water,the shear strength parameters are greatly weakened,and the sliding resistance is reduced,which leads to the safety risk of slope instability and decline.The following measures are taken on site:the cracks at the rear edge of the slope are tamped with clay and set up.

关 键 词：边坡工程 滑坡失稳 诱导因素 处置措施 

分 类 号：U418.5[交通运输工程—道路与铁道工程]