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

Figure 7

Stress-strain curves of grouted crushed coal specimens with different grain size mixtures under different confining pressures. (a) Small specimen, (b) medium specimen, (c) large specimen, and (d) representative original coal specimen.

(a)

(b)

(c)

(d)