驮英水库导流泄洪隧洞出口边坡三维极限平衡分析  

Three-dimensional Limit Equilibrium Analysis of the Outlet Slope of Diversion and Spillway Tunnel in Tuoying Reservoir

作　　者：张家旺 冯晓波[1] 荣冠[1] 唐新宇 蒙世仟 ZHANG Jiawang;FENG Xiaobo;RONG Guan;TANG Xinyu;MENG Shiqian(State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China;Guangxi Water and Power Design Institute, Nanning 530023, China)

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072 [2]广西壮族自治区水利电力勘测设计研究院,广西南宁530023

出　　处：《水电与新能源》2020年第4期13-19,共7页Hydropower and New Energy

基　　金：广西重点研发计划项目(桂科AB18126046)。

摘　　要：驮英水库导流泄洪隧洞出口边坡岩体结构面相对较发育,边坡上游侧存在层间软弱夹层,下游侧近顺向坡,具有潜在失稳威胁。以该边坡为研究对象,构建三维模型,考虑边坡控制性结构面及可能组合的滑动形式,切割潜在滑坡体,经三维极限平衡分析表明,部分潜在滑坡体的安全系数低于规范标准。通过适宜的支护措施,可保证边坡稳定性。The slope rock at the outlet of the diversion and spillway tunnel in Tuoying Reservoir is of developed structural planes.Due to the weak interlayers existed in the upstream side and the dip slope structure of the downstream side,the slope is threated by potential instability.In this study,a three-dimensional model of the slope is constructed and limit equilibrium analysis is carried out considering the controlling structural planes and possible sliding modes.The results show that the safety factors of some potential sliding masses are lower than the required numbers.Then,support measures are proposed to ensure the safety and stability of the slope.

关 键 词：三维极限平衡 结构面 边坡稳定性 支护措施 

分 类 号：TV551.12[水利工程—水利水电工程]