通平高速公路路堑高边坡稳定性综合评价  

Comprehensive Evaluation for Stability of High-cut Slope in TongPing Highway

作　　者：何忠明[1] 张力[1] 王玲[2] 崔波[1] 姚陈宇 

机构地区：[1]长沙理工大学交通与运输工程学院,湖南长沙410004 [2]长沙理工大学土木与建筑学院,湖南长沙410004

出　　处：《矿冶工程》2014年第1期6-8,共3页Mining and Metallurgical Engineering

基　　金：广西科学研究与技术开发计划项目(桂科转1298011-2);湖南省自然科学基金项目(12JJ6052);湖南省教育厅资助项目(13C1010)

摘　　要：从定性与定量两方面对通平高速某岩质边坡稳定性进行了综合评价。定性分析采用赤平极射投影方法进行评价;定量分析采用基于广义Hoek-Brown准则和Mohr-Coulomb准则的极限平衡法与强度折减法分别进行计算。结果表明:边坡岩层层面的倾向与边坡坡面呈小角度相交,为顺层岩质边坡,同时节理面的倾向与边坡坡面也呈小角度相交,对边坡稳定不利;不同软件计算得到的边坡安全系数分别为0.936,0.929与0.97,说明边坡滑动面产生了较大的下滑位移,边坡现阶段处于不稳定状态。A comprehensive evaluation was made for the stability of a rock slope in TongPing highway by qualitative and quantitative analysis. For qualitative analysis, stereographic polar projection was used, while limit equilibrium based on the generalized Hock-Brown and Mohr-Coulomb criterion and strength reduction were adopted for quantitative analysis. Results indicated that the dip of bedding plane and slope surface intersect with each other at a small angle, so the slope is bedding stratified, and the intersection of joint dip and slope surface at a small angle is unfavorable to the slope stability; Slope safety coefficient of 0. 936, 0.929 and 0.97, respectively calculated with different software, indicated there was a greater downslide on the slope sliding surface, resulting in the instability of the slope at this stage.

关 键 词：边坡稳定性 赤平极射投影 FLAC3D 

分 类 号：U416[交通运输工程—道路与铁道工程]