地应力对地下厂房围岩稳定性影响的三维有限元分析  

Three-dimensional Finite Element Analysis of Influence of Ground Stress on Stability of Surrounding Rock of Underground Powerhouse

作　　者：李春辉 任哲明 王洪洋[1,2] 刘天鹏[1,2] Li Chunhui;Ren Zheming;Wang Hongyang;Liu Tianpeng(Zhongshui Northeast Survey,Design and Research Co.,Ltd.,Changchun 130061,Jilin;Cold Area EngineeringTechnology Research Center,Ministry of Water Resources,Changchun 130061,Jilin)

机构地区：[1]中水东北勘测设计研究有限责任公司,吉林长春130061 [2]水利部寒区工程技术研究中心,吉林长春130061

出　　处：《陕西水利》2024年第1期12-15,共4页Shaanxi Water Resources

摘　　要：地下工程的稳定性与岩体的初始地应力状态紧密相关,为保证抽水蓄能电站大型地下洞室群开挖稳定,在工程施工前进行初始地应力场反演以及围岩的稳定性分析十分必要。分别以实测地应力和地应力反演结果为边界条件,基于有限元法综合评价初始地应力对兴城地下洞室群围岩稳定的影响,重点关注边墙、顶拱等重要部位岩体结构的安全稳定问题,可为合理选择地下厂房洞室支护方式和支护参数等提供依据。The stability of underground engineering is closely related to the initial ground stress state of rock mass.In order to ensure the stability of excavation of large underground cavern group of pumped storage power station,it is necessary to invert the initial ground stress field and analyze the stability of surrounding rock before construction.Based on the measured ground stress and ground stress inversion results as boundary conditions,the influence of initial ground stress on the stability of surrounding rock mass in Xingcheng underground caisson group is comprehensively evaluated based on finite element method,focusing on the safety and stability of rock mass structure in important parts such as side wall and top arch,which can provide a basis for reasonable selection of support methods and supporting parameters for underground powerhouse caisson.

关 键 词：地应力 围岩稳定 有限元计算 

分 类 号：TV743[水利工程—水利水电工程]