Mechanical Characteristics and Failure Characteristics of Jointed Rock under Axial Unloading and Radial Unloading

Figure 7

Peak strength of cracked specimens under axial unloading and radial unloading conditions. (a) Strength-crack dip. (b) Effect of unloading rate of confining pressure. (c) Effect of initial confining pressure.

(a)

(b)

(c)