Mechanical Properties of Grouted Crushed Coal with Different Grain Size Mixtures under Triaxial Compression

Figure 11

Ultimate failure of the medium specimens under the confining pressure of 5 MPa and 15 MPa, respectively. Fracture profiles: (a) 5 MPa; (c) 15 MPa. Crack distribution: (b) 5 MPa; (d) 15 MPa.

(a)

(b)

(c)

(d)