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An improved hydromechanical model for particle flow simulation of fractures in fluid-saturated rocksZhang, Yulong; Shao, Jianfu; Liu, Zaobao; Shi, Chong
International journal of rock mechanics and mining sciences, 11/2021, Letnik: 147Journal Article
Fracture initiation and propagation in fluid-saturated rocks are controlled by interaction between fluid flow and rock deformation. The description of hydromechanical coupling is essential for modeling the fracture process. In this paper, an improved hydromechanical model is proposed in the framework of the particle flow simulation method. This model provides a better description of hydraulic properties before and after breakage of bonds and can efficiently describe fluid flow through porous rock matrix and along fractures. The efficiency of the proposed model is first assessed by comparisons with analytical solutions and typical experimental evidences. A series of numerical simulations are then realized to investigate effects of some key parameters such as confining stress, fluid injection rate and viscosity on the initiation and propagation of fractures.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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