Development of constitutive model of fractured rock mass based on strain softening model
Deep rock mass generally has the characteristic of strain-softening.In order to research the stability of the deep fractured rock mass after excavation, based on strain softening model in FLAC3D, combined with damage equation, a new numerical constitutive model of fractured rock mass is set up.The damage equation is considered of initial damage and damage evolution.This model is applied to analyze the stability of the roadway surrounding rock.The analysis on deformation,plastic zone and safety coefficient in surrounding rock shows that the model can reflect the characteristic of strain-softening and the crack damage in rock mass, the result can provide reference for maintaining the stability of the rock.
constitutive model strain softening fractured rock mass numerical simulation
DU Qiang ZHAO Guang-ming
School of Mining and Safety ,Anhui University of Science and Technology, Huainan 232001 ,China
国际会议
International Mining Conference 2014(2014国际采矿论坛)
安徽淮南
英文
188-193
2014-09-19（万方平台首次上网日期，不代表论文的发表时间）