影响边坡稳定性因素数值研究  

Numerical study of factors influencing slope stability

作　　者：罗世林[1] 万文[1] 唐劲舟 廖美中 刘天宇[1] LUO Shilin WAN Wen TANG Jinzhou LIAO Meizhong LIU Tianyu(School of Resource, Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China School of Architecture and Urban Planning, Hunan University of Science and Technology, Xiangtan 411201, China)

机构地区：[1]湖南科技大学资源环境与安全工程学院,湖南湘潭411201 [2]湖南科技大学建筑与城乡规划学院,湖南湘潭411201

出　　处：《矿业工程研究》2016年第4期37-40,共4页Mineral Engineering Research

基　　金：国家自然科学基金资助项目(51274097;51174088);湖南省自然科学基金资助项目(2015JJ2067);湖南省教育厅资助项目(13A020)

摘　　要：为综合研究内摩擦角和内聚力2个因素对边坡安全系数的影响规律,利用控制变量法原则开展了一系列数值试验,数值试验表明:岩石内聚力较小时,边坡安全系数也较小,同时变化不大,当内聚力增大时,边坡安全系数也相应增大且与内聚力呈现三次函数关系;内摩擦角对边坡安全系数的影响类似于内聚力对边坡安全系数的影响,利用后处理软件Tecplot对数据进行进一步处理可知:内摩擦角越小边坡的滑动面越表现深层滑动,当内摩擦角增大时,边坡的滑动面由深层滑动转为浅层滑动.To study the relationship of friction and cohesion of the two factors on slope safety factor, this paper uses the principle of the control variable method to conduct a series of numerical experiments. Experiment shows that the change of slope safety factor is the same to rock mass cohesive but little changes. When the cohesion increases, the safety factor also increases and the cohesion presents three functions; the effect of rock mass friction to slope safety factor is similar to cohesion on the impact of slope safety factor. By using the postprocessing software Tecplot for further processing of the data, it shows that sliding surface presents deep slide when the friction is small. When the friction increases, the slope of the sliding surface goes from the deep slide into the shallow one.

关 键 词：边坡 数值试验 内聚力 内摩擦角 安全系数 

分 类 号：TD824.7[矿业工程—煤矿开采]