Klymenko D. Outburst regularities and the seismoacoustic forecast at coal seam mining

Dissertation is devoted to increasing the reliability of the seismoacoustic forecast method of sudden gas-dynamic phenomena in mines by forming predictive criteria.These criteria are based on the conditions of rock dynamic failure. It was established for the first time that there are critical modes of oscillational load, in which the critical crack length changes by jump, with the help of the crack initiation criterion. It is established that an increase in the amplitude of harmonic oscillations in the frequency range 700-1400 Hz is "hazard" from the point of view of the gas-dynamic phenomena onset. The acoustic signals spectra that occur in a coal seam during the operation of various mine mechanisms were assessed. The proposed criteria were applied in the development of the hardware and software mine seismoacoustic complex.