结构面强度参数对层状边坡稳定性影响的三维分析  

Three dimensional analysis for effect of structural plane strength parameters on stratified slope stability

作　　者：卢敦华[1] 曲艳伟[1] 何忠明[2] 彭文祥[3] 周莲君[3] 

机构地区：[1]河南工程学院资源与环境工程系,河南郑州451191 [2]长沙理工大学交通运输工程学院,湖南长沙410114 [3]中南大学地学与环境工程学院,湖南长沙410083

出　　处：《中南大学学报（自然科学版）》2011年第1期147-151,共5页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(50878212);河南工程学院院博士基金资助项目(07089);河南省基础与前沿技术研究项目(102300410140)

摘　　要：利用FLAC3D数值计算软件建立层状岩体边坡三维计算模型,分析结构面黏结力和内摩擦角变化时边坡安全系数和滑动面的变化规律。研究结果表明:在不同结构面情况下,随着结构黏结力的增大,边坡整体安全系数不断增大,并且两者符合线性关系,此时,边坡滑动面逐渐从临坡面向坡内移动,滑动模式由浅层滑动转换为深层滑动;随着内摩擦角的增大,边坡的安全系数逐渐增大,并且两者符合线性关系,变化滑动面从深部往浅部移动。The three dimensional calculation model for stratified rock slope was established by the numerical calculation software FLAC3D, the cohesion and friction angle of structural plane were varied, safety factor and slip plane were analyzed. The results show that, for slope with different inclinations of structural plane, the safety factor of slope increases with the increase of cohesion, and their relationship meets the linear way, while the slip plane moves from the slope surface to the internal of slope, the slipping mode changes from shallow slippage to the deep slippage mode; with the increase of friction angle, the safety factor of slope increases gradually, and their relationship meets the linear way, and the slipping plane moves from internal of slope to the slope surface.

关 键 词：结构面 强度参数 层状边坡 稳定性 

分 类 号：TU457[建筑科学—岩土工程]