A PRELIMINARY STUDY FOR A COMPRESSION-SHEAR ROCK CRACK FRACTURE CRITERION BASED ON COULOMB-MOHR THEORY

摘要：

The different criteria applications for opening propagation and shearing propagation for rock cracks are discussed. Two types of compression-shear fracture experiments for rock crack are conducted. The phenomena for rock crack fracture: firstly opening propagation and secondly shearing propagation under compression-shear loading condition arc realized. A shear fracture criterion is constructed based on Coulomb-Mohr strength criterion. The adoption of the characteristic scale r0 for the rock grain size used in the criteria is discussed. Experimental results are in good agreements with the values predicted by the shear fracture criteria.

作者: LIYUN LI FUQUAN CAO TIAN TIAN SHILI HE MIAO ZHOU

作者单位: China University of Mining and Technology (Beijing), Beijing 100083, China

会议类型: 国际会议

会议名称: The Third International Conference on Nwe Development in Rock Mechanics and Engineering(NDRM2009)(第三届国际岩石力学与工程新进展学术会议)

会议地点: 三亚

会议语种:英文

页码: 119-124

在线出版日期: 2009-05-24（万方平台首次上网日期，不代表论文的发表时间）