Study on Damage Model of Rock Based on Probability Method

摘要：

In this paper, according to the volume strain of the rock and by referring to the probability method, the damage variable of the rock is defined and the 3D damage statistical constitutive equation is established. Through comparing the constitutive equation and the test data, the method for determining the equation parameters is given. The Research shows that with the variation of the unloading rate of the confining pressure on the rock, the value of parameters in the constitutive relation will change accordingly, and when the axial stress is small, the results are preferably matching the actual conditions, whereas when the axial stress is larger, the σ1 value under the same conditions will be lower than the actual one.

关键词： volume strain damage variable elastic damage constitutive equation confining pressure unloading

作者: CHAI Wenge LI Wenli

作者单位: College of Architecture, North China University of Technology, Beijing 100144, China School of Architecture and CivilEngineering, China University of Mining & Technology, Beijing 100083

会议类型: 国际会议

会议名称: The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)

会议地点: 杭州

会议语种:英文

页码: 2542-2547

在线出版日期: 2010-10-26（万方平台首次上网日期，不代表论文的发表时间）