Study of Strength and Deformation Evolution in Raw and Briquette Coal Samples under Uniaxial Compression via Monitoring Their Acoustic Emission Characteristics

Figure 4

Uniaxial compression stress-strain curves of raw coal samples (a) and briquette coal samples (b-e) with different shares of cement content: (b) group (I) 0%; (c) group II, 5%; (d) group III, 10%; (e) group IV, 20%.

(a)

(b)

(c)

(d)

(e)