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

Figure 15

Examples of the uniaxial compression failure of briquette coal samples with different cement contents: (a) 0%; (b) 5%; (c) 10%; (d) 20%.

(a)

(b)

(c)

(d)