坡体形状对边坡稳定性影响研究  

Research on the Influence of Slope Shape on Slope Stability

作　　者：张勇 李佳舒[1,2] 陆振裕 ZHANG Yong;LI Jia-shu;LU Zhen-yu(The 3rd Geological Brigade of Jiangsu Geological&Mineral Bureau,Zhenjiang 212001,Jiangsu,China;Jiangsu Geological Foundation Pile Engineering Company,Zhenjiang 212001,Jiangsu,China)

机构地区：[1]江苏省地质矿产局第三地质大队,江苏镇江212001 [2]江苏地质基桩工程公司,江苏镇江212001

出　　处：《水利科技与经济》2021年第1期44-48,共5页Water Conservancy Science and Technology and Economy

摘　　要：边坡结构是一种广泛分布的地质体,在世界各地均有大范围的分布。为了研究坡面形状对边坡稳定性的影响,采用自适应网格划分的方式,基于强度折减法对句容市某边坡支护工程进行研究。结果表明,采用强度折减法分析边坡稳定性,不仅可以获得边坡的安全系数,同时可以获得边坡的剪切破坏面位置;“坡下内凹-坡上外凸”时,边坡的安全系数最低;“坡下平直-坡上平直”时,边坡的安全系数最高;整体滑坡时的边坡安全系数一般是高于局部滑坡时的边坡安全系数。Slope structure is a widely distributed geological body,which is distributed in a large area all over the world.In order to study the influence of slope shape on slope stability,an adaptive meshing method was used to study a slope support project in Jurong City based on the strength reduction method.The result show that the strength reduction method was used to analyze the slope stability not only can the safety factor of the slope be obtained,but the position of the shear failure surface of the slope can be obtained at the same time;the safety factor of the slope is the lowest when the slope is“concave under the slope-convex on the slope”;the safety factor of the“straight”slope is the highest;the safety factor of the slope in the case of an overall landslide is generally higher than the safety factor of the slope in the case of a local landslide.

关 键 词：坡体形状 强度折减法 边坡 稳定性 剪切带 

分 类 号：TU411[建筑科学—岩土工程]