Research Article

Study of Acoustic Emission and Mechanical Characteristics of Coal Samples under Different Loading Rates

Figure 9

The relationship curve between time and AE energy, AE cumulative energy of the coal samples under different loading rates.
(a) Acoustic emission energy and cumulative energy of M1 coal under loading rate of 0.001 mm/s
(b) Acoustic emission energy and cumulative energy of M6 coal under loading rate of 0.002 mm/s
(c) Acoustic emission energy and cumulative energy of M9 coal under loading rate of 0.005 mm/s