高速公路顺层路堑边坡超前支护技术研究  

Research on Advanced Support Technology of Cutting Slopes Along the Expressway

作　　者：李准 冯升 杜国强 LI Zhun;FENG Sheng;DU Guoqiang(Hubei Provincial Communications and Design Institute Co.,Ltd.,Wuhan 430051,China)

机构地区：[1]湖北省交通规划设计院股份有限公司,武汉430051

出　　处：《交通科技》2024年第1期41-45,共5页Transportation Science & Technology

摘　　要：鄂西山区地质条件复杂,雨量充沛,顺层路堑边坡施工过程中极易发生滑塌。文中以恩施土家族苗族自治州某高速隧道出口左、右两侧顺层高边坡为依托,针对2处边坡开挖过程中发生不同程度的顺层滑塌现象,对顺层路堑边坡的超前支护技术展开研究。根据2处边坡的工程地质条件,对2处边坡的稳定性进行评价分析;并分别提出抗滑桩、钢轨桩+抗滑挡墙的超前支护处治方案.通过对2种超前支护处治方案对比分析可知,抗滑桩的超前支护处治方案效果更为显著,且更加经济环保。The geological conditions in the mountainous areas of western Hubei are complex,the rainfall is abundant,and the cutting slope is very prone to landslide during the construction.The advanced support technology of the slope along the layer cut was studied in view of the different degrees of bedding collapse phenomenon during the excavation of the two slopes,based on the high slopes on the left and right sides of the exit of a high-speed tunnel in Enshi Tujia and Miao Autonomous Prefecture.According to the engineering geological conditions of the two slopes,the stability of the two slopes was evaluated and analyzed.The advanced support treatment scheme of anti-slip pile,and rail pile combined with anti-slip retaining wall was proposed.Through the comparative analysis of the two advanced support treatment schemes,it can be seen that the advanced support treatment scheme of anti-slip pile has more significant effect with lower costs and more environmental characteristics.

关 键 词：顺层滑塌 稳定性 超前支护 抗滑桩 钢轨桩+抗滑挡墙 

分 类 号：U416.14[交通运输工程—道路与铁道工程]