Numerical Simulation for Rock Fracture Viscoelastic Creep under Dry Conditions

Figure 6

Illustration of the grid discretization and discretized Boussinesq equation. Indices and represent the coordinates in the direction, with and . Indices and represent the coordinates in the direction, with and . In Equation (13), the vertical pressure is applied on grid , and represents the direction elastic displacement on grid . and are the grid sizes in the direction and the direction, respectively.