摘要
Abstract
In order to reduce the influence of high slope excavation on the deformation and stress of the existing tunnel,this paper takes a slope project as an example and analyzes the influence of slope excavation on the deformation characteristics and mechanical response of the existing tunnel by ABAQUS finite element simulation.The results show that the closer the distance from the tunnel center line,the greater the horizon-tal and vertical displacement of the slope and the tunnel lining structure,that is,the rock mass failure mode is wedge.Compared with the con-dition without support,the maximum horizontal displacement and vertical displacement of the slope after support are reduced 96.0%and 94.8%respectively.The shear stress and maximum principal stress of the tunnel lining structure are reduced after the excavation and support.The application effect of the active support structure design scheme is remarkable.关键词
边坡开挖/隧洞工程/ABAQUS/变形特性/力学响应Key words
Slope excavation/Tunnel engineering/ABAQUS/Deformation characteristics/Mechanical response分类
建筑与水利
