Mechanical Properties of Bump-Prone Coal with Different Porosities and Its Acoustic Emission-Charge Induction Characteristics under Uniaxial Compression

<div>AE waveforms in the time domain and the frequency distribution recorded for the tests at the signal surge point of coal: (a) time domain and (b) frequency. a is specimen <sup>#</sup>18, b is specimen <sup>#</sup>10, and c is specimen <sup>#</sup>5.</div>

Advances in Civil Engineering

fig16

Figure 16

Figure 16: Mechanical Properties of Bump-Prone Coal with Different Porosities and Its Acoustic Emission-Charge Induction Characteristics under Uniaxial Compression 

Figure 16 | Mechanical Properties of Bump-Prone Coal with Different Porosities and Its Acoustic Emission-Charge Induction Characteristics under Uniaxial Compression 