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Direct measurement of a contact area using pressure-sensitive film was performed for artificially generated granite tensile fractures, with different shear displacements of 2, 3, and 5 mm and at various normal stresses of up to approximately 100 MPa, to clarify the relationship between anisotropic flow and normal stress in a rock fracture with shear displacement. Aperture distributions with contact...
A series of injection-induced slip experiments using pre-fractured granitic rock specimens was conducted to investigate the dynamic hydraulic responses of existing fractures during hydraulic stimulation. The results show a characteristic stepwise slip and temporal increase in fluid flow in the fractures during slip. This increase is considered to result from significant shear dilation that is sufficient...
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