Numerical Investigation of Relationship between Bursting Proneness and Mechanical Parameters of Coal

Figure 9

Stress-strain curves of No. 12 coal specimen under nonuniform cohesion distribution in the model with eight different scatter intervals: (a) cohesion interval of 0.82–8.82 MPa, (b) cohesion interval of 1.32–8.32 MPa, (c) cohesion interval of 1.82–7.82 MPa, (d) cohesion interval of 2.32–7.32 MPa, (e) cohesion interval of 2.82–6.82 MPa, (f) cohesion interval of 3.32–6.32 MPa, (g) cohesion interval of 3.82–5.82 MPa, and (h) cohesion interval of 4.32–5.32 MPa.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)