Hydromechanical Coupling Characteristics of the Fractured Sandstone under Cyclic Loading-Unloading

Figure 8

Stress-strain and permeability-strain curves for single-fracture sandstone at different cycles: (a) the first cycle; (b) the second cycle; (c) the third cycle; (d) the fourth cycle; (e) the fifth loading.

(a)

(b)

(c)

(d)

(e)