深埋大型地下洞室群围岩稳定性三维数值模拟  

3-D Numerical Modeling for Surrounding Rock Stability of Deep Buried Large Underground Caverns

作　　者：李睿[1] 张蕊 徐云海 程伟 

机构地区：[1]河海大学地球科学与工程学院,江苏南京210098 [2]中国电建集团昆明勘测设计研究院有限公司,云南昆明650051

出　　处：《水力发电》2016年第5期16-19,共4页Water Power

基　　金：江苏省普通高校研究生科研创新计划项目(SJZZ15-0068);中国博士后科学基金面上资助项目(2015M572509)

摘　　要：深埋大型地下洞室群开挖引起围岩应力重分布,评价各个阶段(初始和开挖状态)洞室围岩应力及位移分布特征具有较大的工程意义。以GS水电站右岸深埋大型地下厂房洞室群为工程背景,基于FLAC3D平台建立了三维地质模型,研究了深埋大型地下厂房的初始应力特征以及在施工开挖过程中洞室围岩的应力及变形特征,并对深埋大型洞室围岩的稳定性进行了综合评价。The excavation of deep buried large underground cavern group will lead to the redistribution of stress in surrounding rock. Therefore, the study on stress distribution characteristics of surrounding rock at each stage（ initial state and excavation phases） and the rock mass displacement under the change of stress conditions are of great engineering significance. Based on FLAC3 D platform, a 3-D geological model is established for the stability analysis of deep buried underground powerhouse cavern group on the right bank of GS Hydropower Station. The initial stress characteristics of deep buried underground powerhouse and the stress and deformation characteristics of surrounding rock in excavation processes are analyzed respectively.Furthermore, the stability of surrounding rock of underground powerhouse is comprehensively evaluated.

关 键 词：深埋地下洞室群 围岩 稳定性分析 应力场 变形场 

分 类 号：TV314[水利工程—水工结构工程]