【摘要】 应用FLAC3D数值模拟软件对昆明白泥井3号隧道围岩稳定性进行了分析和评价。结果表明隧道支护后围岩的最大变形出现在隧道右侧拱顶,为1.00cm;隧道支护后左侧拱和右侧拱脚处剪应变明显增大,为应力集中区;围岩可以通过自身应力、应变和能量的调整,使整个隧道围岩处于稳定状态;同时也表明FLAC3D用于隧道围岩变形分析是可行的。更多还原

【Abstract】 The No.3 tunnel surrounding rock stability of Bainijing in Kunming is analyzed and evaluated by numerical simulation program FLAC^3D,on this account reasonable conclusions are available. Firstly,the maximal deformation of 1.00cm occurs at the right crown after supporting of the tunnel. Secondly,the left arch and the right arch spring generate the regions of stress concentration for the shear strain distinctly increasing.Thirdly,the mechanical equilibrium state of the surrounding rock is reached by readjusting its stress, strain and energy.Finally,FLAC^3D is very capable of solving the deformation analysis of the tunnel surrounding rock.更多还原