Hongwei Zhang1,2, Zhijun Wan3, Yixin Zhao1,2, Yuan Zhang3, Yulong Chen2,*, Junhui Wang3,*, Jingyi Cheng3
CMES-Computer Modeling in Engineering & Sciences, Vol.126, No.2, pp. 443-455, 2021, DOI:10.32604/cmes.2021.013179
Abstract In the enhanced geothermal system (EGS), the injected fluid will induce shear sliding of rock fractures (i.e.,
hydroshearing), which consequently, would increase the fracture aperture and improve the heat transfer efficiency
of the geothermal reservoir. In this study, theoretical analysis, experimental research and numerical simulation
were performed to uncover the permeability and heat transfer enhancement mechanism of the Hot-Dry-Rock
(HDR) mass under the impact of shearing. By conducting the direct shear test with the fractured rock samples,
the evolution process of fracture aperture during the shearing tests was observed, during which process, cubic law
was adopted to depict the rock… More >
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