滁州西环高速某路堑高边坡滑坡稳定性分析  

Analysis on Landslide Stability of a Cutting High Slope in Chuzhou West Ring Expressway

作　　者：沈璐 张志峰[2] 李漪[2] SHEN Lu;ZHANG Zhifeng;LI Yi(School of Civil Engineering,Anhui Jianzhu University,Hefei 230601,China;Anhui Transport Consulting&Design Institute Co.,Ltd.,Hefei 230088,China)

机构地区：[1]安徽建筑大学土木工程学院,安徽合肥230601 [2]安徽省交通规划设计研究总院股份有限公司,安徽合肥230088

出　　处：《兰州工业学院学报》2023年第1期32-35,57,共5页Journal of Lanzhou Institute of Technology

摘　　要：针对滑坡治理问题,通过实例对滁州西环高速某路堑高边坡稳定性用赤平投影法定性分析,同时利用Midas GTS岩土软件分别建立自然工况、暴雨工况、支护后暴雨工况下的有限元模型并进行定量分析。结果表明:滑坡土体呈碎块石状,含碳质、岩性软、易风化,在外界因素作用下可能发生坡面破坏;开挖边坡稳定性较差,暴雨后已发生滑塌,采取部分削坡+格构梁+锚杆对滑动面进行加固后,边坡稳定性系数F_(S)=1.44,达到稳定性要求。In view of the problems existing in landslide control,the stability of a cutting high slope of West Ring Expressway in Chuzhou is qualitatively analyzed by stereographic projection through an example.Meanwhile,the finite element models under natural conditions,rainstorm conditions and rainstorm conditions after support are established by Midas GTS geotechnical software for quantitative analysis.The results show that the landslide soil is in the shape of broken stones,carbonaceous,soft lithology and easy to be weathered,which may cause slope failure under the action of external factors;The finite element analysis shows that the stability of the current excavated slope is poor,and it has collapsed after heavy rain.After partial slope cutting+lattice beam+anchor bolt are adopted to strengthen the sliding surface,the slope stability coefficient F S=1.44,which meets the stability requirements.

关 键 词：边坡滑坡 强度折减法 治理措施 

分 类 号：U416.14[交通运输工程—道路与铁道工程]