numerical study on crack propagation in brittle jointed rock mass influenced by fracture water pressure
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ID: 251835
2015
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Abstract
The initiation, propagation, coalescence and failure mode of brittle jointed rock mass influenced by fissure water pressure have always been studied as a hot issue in the society of rock mechanics and engineering. In order to analyze the damage evolution process of jointed rock mass under fracture water pressure, a novel numerical model on the basis of secondary development in fast Lagrangian analysis of continua (FLAC3D) is proposed to simulate the fracture development of jointed rock mass under fracture water pressure. To validate the feasibility of this numerical model, the failure process of a numerical specimen under uniaxial compression containing pre-existing fissures is simulated and compared with the results obtained from the lab experiments, and they are found to be in good agreement. Meanwhile, the propagation of cracks, variations of stress and strain, peak strength and crack initiation principles are further analyzed. It is concluded that the fissure water has a significant reducing effect on the strength and stability of the jointed rock mass.
| Reference Key |
li2015materialsnumerical
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| Authors | ;Yong Li;Hao Zhou;Weishen Zhu;Shucai Li;Jian Liu |
| Journal | Nature Materials |
| Year | 2015 |
| DOI |
10.3390/ma8063364
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| URL | |
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