Damage Evaluation for Rock Burst Proneness of Deep Hard Rock under Triaxial Cyclic Loading

Figure 8

Fitting curve of plastic shear strain and elastic energy index under different confining pressures: (a) 1 MPa; (b) 5 MPa; (c) 10 MPa; (d) 20 MPa; (e) 30 MPa.

(a)

(b)

(c)

(d)

(e)