Strain Softening Model of Rock after Post-peak Strength with Confining Pressure

摘要：

　　It is a key issue to model the effect of confining pressure on strain softening of post-peak strength rock.In this paper the degradation index of post-peak strength is adopted to model the effect of the confining pressure on the pest-peak strength.Then ideal elastic-plactic mechanical theory is used to establish the strain softening model of rock with combining stress.Thirdly the model is implemented in FLAC.Lastly a case is studied,and the results show that the model in this paper is effective method to model the strain softening processes of post-peak strength rock.

关键词： confining pressure strain softening model post-peak strength

作者: Yang Juwen Yu Yongjiang Zhang Chunhui

作者单位: Mining Depart mant, Datang International Mining Co., LTD, Xilinhot, 026001, China College of Mine Technology and Engineering,Liaoning Technical University, Fuxin, 123000,China School of Civil Engineering, Hebei University of Science and Technology,Shijiazhuang,050018, China

会议类型: 国际会议

会议名称: International Symposium on Rock Mechanics and Mine Dynamic Disaster Prevention(岩石力学与矿井动力灾害防治国际学术研讨会)

会议地点: 辽宁阜新

会议语种:英文

页码: 135-139

在线出版日期: 2013-07-13（万方平台首次上网日期，不代表论文的发表时间）