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Seepage evolution of shear deformation for a single rock structure surface

Jiang CHANG ; Keru JIANG ; Haichun MA ; Zhimin YU

Journal of Hebei University of Science and Technology, 2024-04, Vol.45 (2), p.207-216 [Periódico revisado por pares]

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Título:
Seepage evolution of shear deformation for a single rock structure surface
Autor: Jiang CHANG ; Keru JIANG ; Haichun MA ; Zhimin YU
Assuntos: seepage mechanics; single structure surface; shear deformation; numerical simulation; permeability; forchheimer formula
É parte de: Journal of Hebei University of Science and Technology, 2024-04, Vol.45 (2), p.207-216
Descrição: In order to study the evolution of fracture permeability under shear action, a Weierstrass random fractal function was used in Comsol to generate a single fracture, and the relative displacements of two fracture surfaces were adjusted to simulate shear action. Changes of fracture width under different shear displacements and the defined range of nonlinear effects under different flow rates were analyzed, the factors affecting fracture permeability in shear process were determined by using scatter plot and function curve fitting, and the quantitative relationship was given. The results show that the probability density distribution of the gap width meets the standard Gaussian distribution without shearing, but with the shearing process, the Gaussian distribution of the gap width is destroyed and only reflects parts of the characteristics of the standard Gaussian distribution. When the shear occurs, the permeability first has a decreasing process, and then fluctuate within a certain range. The smaller aperture
Editor: Hebei University of Science and Technology
Idioma: Chinês

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