Plastic zone analysis of surrounding rocks basing on plastic flow rule

摘要：

　　Based on elastic-plastic mechanical model of soft rock tunnel considering dilatancy expansion softening properties of soft rock, no longer constant volume plastic zone as a precondition.Combined with Mohr-Coulomb criterion in the plastic flow rule established on the basis of lateral pressure coefficient λ =1 symmetry axis planar circular tunnel limit equilibrium conditions.Makes soft rock tunnel deformation stress and analytical solutions closer to the actual, through example calculation compared to other elastic-plastic mechanics further validate the analytical solution for soft rock tunnel instructive.

关键词： rock deformation plastic flow soft rock tunnel plastic zone

作者: ZHANG Kai TU Min SHEN Sun-ping LI Peng

作者单位: School of Energy and Safety, Anhui University of Science and Technology, Huainan, 232001, China School of Energy and Safety, Anhui University of Science and Technology, Huainan, 232001, China;Key

会议类型: 国际会议

会议名称: International Mining Conference 2014(2014国际采矿论坛)

会议地点: 安徽淮南

会议语种:英文

页码: 226-229

在线出版日期: 2014-09-19（万方平台首次上网日期，不代表论文的发表时间）