Numerical Simulation of Shear Behavior and Permeability Evolution of Rock Joints with Variable Roughness and Infilling Thickness

Figure 3

Simulation design and distribution of infill profiles with different joint rough coefficients (JRCs). (a) The height and width of the simulated specimens are 40 mm and 60 mm, respectively. The upper half of the specimen moved to the right at a constant shear rate, while the lower part was confined by the servo-controlled wall to maintain the constant normal stress. (b) Profiles of the employed JRCs.