Role of Unloading and Filtration of Gas in the Development of Main Cracks in a Coal Bed
E. P. Fel'dman1, N. A. Kalugina1, T. N. Meln'ik2
1Institute for Physics of Mining Processes, National Academy of Sciences Ukraine, Dnepropetrovsk, 49600, Ukraine
2Galkin Donetsk Physical-Technical Institute, Donetsk, 83114, Ukraine
Keywords: угольный пласт, газонаполненная трещина, фильтрация, диффузия, выброс, coal bed, gas-filled crack, filtration, diffusion, emission
Abstract
The development of main cracks in a coal bed due to rapid unloading is analyzed using the methods of theoretical physics. A fracture criterion and a criterion for the time to fracture of a site on the edge of the bed are obtained.
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