Mohr-Wedge岩石破坏准则适用性研究  

Research on theApplicability of Mohr-Wedge Rock Failure Criterion

作　　者：张晶[1] 欧阳治华[1] 郭宏强[1] 王波[1] ZHANG Jing OUYANG Zhihua GUO Hongqiang WANG Bo(School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, Hubei 430081, China)

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081

出　　处：《矿业研究与开发》2016年第11期65-70,共6页Mining Research and Development

摘　　要：Mohr-Wedge岩石破坏准则是在Vutukuri等根据摩尔包络线提出的偏微分方程的理论基础上,通过引入楔形模型求解该偏微分方程的解得到的。整理Mohr-Wedge准则所含参数,使该准则更易被理解。利用公开发表文献中的多种岩石三轴试验数据,将该准则与Mohr-Coulomb准则和Hoek-Brown准则进行比较,进一步讨论该准则的适用性。结果显示,Mohr-Wedge准则与岩石三轴试验数据拟合良好,且对于某些岩石,其拟合结果略优于其他两种准则,这表明Mohr-Wedge准则在预测岩石强度时具备一定的适用性。Based on the theory of partial differential equation proposed by Vutukuri according to Mohr＇ s envelope, the Mohr-Wedge rock failure criterion was obtained by introdu- cing the Wedge model to solve this equation. The parameters in Mohr-Wedge criterion were arranged to understand the criterion more easily. In order to discuss the applicability of this criterion, Mohr-Wedge criterion was compared to Mohr- Coulomb criterion and Hock-Brown criterion by using multi- ple data of rock triaxial tests in published literatures. The re- suits showed that Mohr-Wedge criterion had a good fitting with the data of rock triaxial tests, and its fitting results were slightly better than the other two kinds of criterion for some rock, which proved that Mohr-Wedge criterion had certain applicability for predicting the rock strength.

关 键 词：Mohr-Wedge准则 摩尔包络线 MOHR-COULOMB准则 HOEK-BROWN准则 准则适用性 

分 类 号：TD313[矿业工程—矿井建设]