摘要
针对318国道利川绕城段深挖路堑高边坡设计中的难点工程,利用有限元软件PLAXIS 2D对该项目K0+310典型深挖路堑横断面以摩尔库伦模型为基础,进行多种工况下的边坡稳定性数值模拟与分析。通过有限元软件计算结果及现场后期监测情况表明:风化严重的边坡岩层进行重点加固及防治后,改变并缩小了山体内潜在滑移面的范围,降低了山体出现滑坡的可能性,提高了边坡安全稳定系数,使得五级高边坡整体最终趋于稳定。同时为工程防护设计方案的选择提供了有利依据。
Aiming at the difficult engineering in the design of deep excavated cutting high slope of Lichuan section of National Highway 318,this paper uses the finite element software PLAXIS 2D to simulate and analyze the slope stability of K0+310 typical deep excavated cutting section under various working conditions on the basis of Mohr-Coulomb model.The results of FEM software calculation and field monitoring show that the scope of potential slip surface in mountain body is changed and narrowed after strengthening and prevention of weathered slope strata,the possibility of landslide in mountain body is reduced,the safety and stability coefficient of slope is improved,and the overall stability of grade five high slope is finally tended to be stable.At the same time,it provides a favorable basis for the selection of engineering protection design scheme.
作者
刘忠祥
谭涛
康慧
陈晓艳
LIU Zhong-xiang;TAN Tao;KANG Hui;CHEN Xiao-yan(Jiangxi Dongtong Transportation Science and Technology Co.,Ltd.,Nanchang,Jiangxi 330013,China)
出处
《黑龙江交通科技》
2022年第12期1-3,共3页
Communications Science and Technology Heilongjiang
