电站引水隧洞围岩衬砌应力分析

Wall Rock Lining Stress Analysis of Hydropower Station

文章以某水电站圆形截面引水隧洞为分析对象,基于有限差分法,利用数值模拟软件FLAC3D分析了运营期、检修期和施工期3种工况条件下,引水隧洞应力分布状况和岩体变形特征以及衬砌受力和位移情况,避免围岩变形过大、衬砌被破坏等,保证引水隧洞工程的安全与经济,为将来工程设计提供有价值的参考。

In this paper,circular cross section diversion tunnel of a hydropower station is taken as the analyzed object,based on finite difference method,value simulation software of FLAC3 D is used to analyze the layout of diversion tunnel stress,characteristics of rock- body deformation and lining force and displacement under three working conditions including operation period,maintenance period and construction period,avoiding excessive deformation of surrounding rock and lining destroy,and so on,guaranteeing the safety and economic benefits of diversion tunnel project,supplying valuable reference for future project design.