Study on Acoustic Emission and Electromagnetic Radiation of Coal and Rock Samples under Extraordinary Temperature

In this paper, the acoustic emission and electromagnetic radiation signals of different coal and rock samples were measured during temperature rise and coal and rock rupture by using the test system of the temperature rise, deformation, rupture, and the acoustoelectric effect of coal and rock samples, through the analysis, the change regularity of the acoustic emission and electromagnetic radiation signals of the coal and rock samples in the process of heating and temperature rise was obtained, and the change regularity of the electromagnetic radiation at the same frequency and different position was measured. The research results showed that in the process of heating and temperature rise, the coal and rock samples would emit the acoustic emission and electromagnetic radiation signals; the acoustic emission signal generated by coal and rock samples would increase first and then decrease, and the electromagnetic radiation signal would change with the temperature change, its change trend was roughly the same with that of the temperature.