STUDY ON DETERIORATION MODEL FOR HARD ROCKMASS UNDER HIGH GEO-STRESS

摘要：

A new rock deterioration model is presented to simulate both the brittle failure activity of hard rock and deterioration of material mechanical parameters in wall rock of underground engineering.The model has three basic characters: (1) The stress-strain curve composes of liner elastic part,stress falling part and plastic flow part; (2) The mechanics parameters is updating with the deteriorating of rock mass in the excavation damage zone; (3) It can simulate the uneven distribution of material property.Fitting rock triaxial compression test stress-strain curve of granite and simulating experimental tunnel identify that the model is reasonable.

关键词： Deterioration model Elasto-brittle-plastic heterogeneous distribution of parameters Hard rocmassk

作者: Q.Jiang X.T.Feng G.Q.Chen

作者单位: State Key Laboratory of Geomechanics and Geotecnntcal Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan,Hube1430071,China

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 1108-1112

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）