CHEMICAL PHYSICS OF FRACTAL POLYCONJUGATED SYSTEMS - III - A SYNERGISTIC PHYSICOCHEMICAL MODEL OF SUDDEN OUTBURSTS OF COAL, ROCK, AND GAS

The synergistic model of nonequilibrium phase transitions and fractal physics of amorphous state are used to elucidate the mechanism of sudd en outbursts of coal, rock, and gas and to derive an EPR-spectroscopy criterion for determining the hazard of outbursts in mines. A synergis tic fractal mechanism of incipience and development of a sudden outbur st is suggested. The dependence of outburst hazard index and the gas c ontent in coals on their metamorphism exhibiting extremums is explaine d. The fractal hierarchic dissipative structure of coal decomposes in its mining because of avalanche-type gas evolution which arises due to the structure and composition instability of the coal-gas-rock system initiated when a critical concentration of the structure and stoichio metric defects of different deformation levels. The fractal kinetics o f changes in the parameters of EPR spectra in processes of gas sorptio n-desorption by coals allows a reliable EPR criterion to be derived fo r determining their outburst hazard which can be used to enhance safet y of coal mining.