Research on Microscopic Evolution Laws of Sandstone Deformation and Failure Based on the Particle Discrete Element Method

Figure 18

Force chain of the saturated sample after cracking. (a) Confining pressures are 0, 5, 10, and 15 MPa. (b) Confining pressures are 20, 30, 40, and 50 MPa.

(a)

(b)