龙西滑坡三维有限元分析研究  

3-D FEM analysis on stability of Longxi slope

作　　者：李振富[1] 黄应胤[1] 沈怀至[1] 

机构地区：[1]天津大学建筑工程学院,天津300072

出　　处：《水利水电技术》2004年第8期25-27,共3页Water Resources and Hydropower Engineering

摘　　要：　库区滑坡是龙羊峡电站的最大隐患之一,滑坡的稳定与否直接影响到电站的安全运行.通过用三维有限元方法研究了库区水位分别是2577m和2600m两种工况下库区龙西滑坡的变形、应力分布规律,并对龙西滑坡的稳定性进行了评价.研究结果表明,滑坡体主滑剖面最大位移位于滑坡体地表陡坎附近;拉应力多位于滑坡体顶部或坡体边缘附近;就稳定性而言,工况Ⅰ时为稳定,工况Ⅱ时基本稳定.Reservoir slope is one of the most serious problems existed in Longyangxia hydropower station,whose safe performance is directly influenced by the stability of slopes. The paper researches the laws of deformation and stress distribution of Longxi slope under two states of the reservoir water-level:2 577 m and 2 600 m,and quantificationally evaluates the stability of Longxi slopes. The results of this study indicate that the position where the major slip section of the slopes can produce maximum displacement locates around steep ridge on the ground surface and tensile stress mostly locates at the top of slopes or around the edge of slopes:the stability are well-stable and stable in principle under the two states,respectively.

关 键 词：滑坡 三维有限元 变形 应力分布 

分 类 号：TV432[水利工程—水工结构工程]