防灾减灾工程学报2012，Vol.32Issue(5)：611-616,6.
结构面分布特征对隧道围岩变形影响的数值模拟分析
Numerical Simulation of Influence of Structural Plane Distribution Characteristic on Deformation of Tunnel's Surrounding Rock
摘要
Abstract
Structural planes largely influence the deformation and stability of surrounding rocks of tunnel. In this paper, the surrounding rock deformation of tunnel due to structural planes distribution characteristics such as structural planes'linear density, dip angle and strength was studied using 3DEC. Surrounding rock deformation characteristics related to different structural planes distribution were summarized and the mechanism of the deformation was analyzed. The results show that if the strength of the structural plane is lower the influence of structural plane's linear density will has an evident influence on deformation of the tunnel and the influence can be divided into two cases : (1) in the case of λ≤0. 2, shear deformation on structural plane is less than bending deformation of surrounding rock and the squeezing deformation is stress induced; (2) in the case of 0. 2<λ≤0. 4, shear deformation on structural plane is more than bending deformation of surrounding rock and the squeezing deformation is structure induced. Dip angle of structural plane mainly changes the location of squeezing deformation. Simulation results and measured data of projects at home have good consistence by comparison. These results give a reference to design and construction of supporting system of tunnels.关键词
围岩大变形/结构面/线密度/倾角/数值模拟Key words
surrounding rock large deformation/ structural plane/ linear density/ dip angle/ numerical simulation分类
矿业与冶金引用本文复制引用
宋成科,王成虎,黄禄渊,火明譞..结构面分布特征对隧道围岩变形影响的数值模拟分析[J].防灾减灾工程学报,2012,32(5):611-616,6.基金项目
中央级科研院所基本科研任务专项(ZDJ2012-20)、国土资源部行业专项中国大陆地壳探测计划(SinoProbe07-03)、国家自然科学基金青年基金项目(40704018)资助 （ZDJ2012-20）
