强度折减法在平面滑动型岩质边坡的应用  

Application of strength reduction in planar failure rock slope

作　　者：朱擘[1,2] 何光春[1,3] 

机构地区：[1]重庆交通大学国家内河航道整治工程技术研究中心,重庆400074 [2]重庆交通大学水利水运工程教育部重点实验室,重庆400074 [3]重庆西南水运工程科学研究所,重庆400074

出　　处：《水运工程》2012年第9期65-69,共5页Port & Waterway Engineering

基　　金：教育部科学技术研究重点项目(210176);重庆市教委科技项目(KJ100426)

摘　　要：岩质边坡平面滑动验算包括岩体内部结构面验算和岩体抗剪强度验算。均质边坡岩体由于抗剪不足产生平面滑动,通过假定破坏面与内摩擦角之间关系迭代求解安全系数,探寻破裂角和内摩擦角之间的关系,进而提出简化估算安全系数公式。通过与数值解对比验算,可知简化公式精度能够满足工程设计要求,可为实际工程提供参考和借鉴。The checking of rock slope＇s plane sliding includes the internal structure of rock mass surface checking and rock shear strength calculation. The sliding of homogeneous rock slope is due to insufficient shear strength. By assuming the relationship between the failure surface and the internal friction angle, we probe into the relationship between the failure angle and internal friction angle, and then propose the simplified estimation formula. Comparing the analytical solution with the numerical solution, we know that the simplified formula meets the engineering requirements, and the conclusion may serve as a reference for the practical engineering.

关 键 词：强度折减 平面滑动 简化估算 破裂角 安全系数 

分 类 号：TU458[建筑科学—岩土工程]