Abstract
AbstractExperiments and regular analyses on the electromagnetic emission (EME) during the deformation and fracture of loaded coal have been conducted, and the EME mechanism was discussed and analyzed. The results show that the EME can be produced during the deformation and fracture of coal, and the EME and the acoustic emission (AE) are not strictly synchronous. EME signals are stronger than AE signals, and are closely related to the coal or rock deformation and fracture process. The EME method can be used to disclose the deformation and fracture mechanism of coal or rock, to forecast earthquakes, and to investigate catastrophic dynamical phenomena of coal or rock in mines and the stability of rock and concrete buildings.
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