Strength failure behavior and crack evolution mechanism of granite containing pre-existing non-coplanar holes: Experimental study and particle flow modeling |
| |
| Institution: | 1. State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, PR China;2. Deep Earth Energy Research Laboratory, Department of Civil Engineering, Monash University, Melbourne, VIC 3800, Australia;1. School of Civil Engineering and Geosciences, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom;2. State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China;3. School of Civil and Environmental Engineering, Nanyang Technological University, 639798, Singapore;4. Department of Civil Engineering, Monash University, Victoria 3800, Australia;5. Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China;1. School of Resources and Safety Engineering, Central South University, Changsha 410083, China;2. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China;3. School of Nuclear Resources Engineering, University of South China, Hengyang 421001, China;4. Power China Zhongnan Engineering Corporation Limited, Changsha 410014, Hunan, China;5. School of Highway, Chang''an University, Xi''an 710064, China;1. School of Resources and Safety Engineering, Central South University, Changsha, Hunan 410083, China;2. Department of Earth Science and Engineering, Royal School of Mines, Imperial College, London SW7 2AZ, United Kingdom;1. College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China;2. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Beijing 100083, China |
| |
| Abstract: | In this study, uniaxial compression tests were conducted on granite specimens containing three non-coplanar holes. The relationships between the stress, acoustic emission (AE) and crack evolution process were analyzed using AE measuring and photographic monitoring techniques. Particle flow code (PFC) was then used to simulate the strength failure behaviors of the specimens with three non-coplanar holes under uniaxially loading. Four typical crack coalescence patterns were identified, i.e., shear, mixed tensile and shear, and tensile. The crack evolution mechanisms around the pre-existing holes in the granite specimens were revealed by an analysis of the force and displacement fields. |
| |
| Keywords: | Granite Three non-coplanar holes Strength Crack coalescence Stress field |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
