Mechanical Characteristics and Energy Dissipation Trends of Coal-Rock Combination System Samples with Different Inclination Angles under Uniaxial Compression

Figure 5

Uniaxial compression stress and AE signal characteristics of typical samples: (a) standard rock sample, (b) standard coal sample, (c) 0° CRCS sample, and (d) 30° CRCS sample.

(a)

(b)

(c)

(d)