基于FEM的岩质高边坡稳定分析  

Stability Analysis and Evaluation of High Rock Slope Based on FEM

作　　者：邱焕峰 湛正刚 程瑞林 QIU Huanfeng;ZHAN Zhenggang;CHENG Ruilin(PowerChina Guiyang Engineering Corporation Limited, Guiyang 550081, Guizhou, China)

机构地区：[1]中国电建集团贵阳勘测设计研究院有限公司,贵州贵阳550081

出　　处：《水力发电》2018年第7期30-33,54,共5页Water Power

基　　金：国家重点研发计划项目(2017YFC1501100);中国华能集团有限公司科技项目(HNKJ15-H13)

摘　　要：基于有限单元法(FEM),提出一套较为系统、完善的边坡稳定性分析系统及评价体系,并应用于藏区某水电站坝肩边坡稳定分析中,结果表明,天然边坡各工况安全系数符合边坡稳定状态;加固措施减小了开挖边坡结构面的屈服,提高了边坡的安全储备能力,各工况边坡安全系数满足要求;基于FEM的计算方法考虑了边坡变形协调,计算的安全系数较刚体极限平衡法(RLEM)大。A set of more systematic and perfect slope stability analysis and evaluation system based on FEM is proposed and applied in abutment slope stability analysis of a hydropower station in Tibet. The results show that,（ a） the safety factor of natural slope fulfills the stable criterion for each working condition;（ b） the reinforcement measures can reduce the yielding of structural plane of excavated slope and increase the security reserve capacity of slope,and the safety factors of slope for each working conditions meet the requirements;（ c） as considering the deformation coordination of slope,the safety factors calculated by FEM are higher than those calculated by rigid limit equilibrium method.

关 键 词：岩质高边坡 稳定分析 有限单元法 刚体极限平衡法 

分 类 号：TU457[建筑科学—岩土工程]