Numerical Simulation and Experimental Studies of Karst Caves Collapse Mechanism in Fractured-Vuggy Reservoirs

Figure 6

Relation curves of Mises stress to cave span and roof thickness at different depths: (a, b) cubic cave; (c, d) spherical cave; (e, f) cylindrical cave.

(a)

(b)

(c)

(d)

(e)

(f)