V.V. Dyrdin, Dr. Sci. (Eng.), Prof. A.A. Fofanov, senior lecturer T.L. Kim, Cand. Sci. (Eng.), Head of the Department, email@example.com V.G. Smirnov, Cand. Sci. (Phys.-Math.), Assoc. Prof. V.P. Tatsiyenko, Dr. Sci. (Eng.), Prof., Director of the Institute of Industrial and Environmental Safety KuzGTU, Kemerovo, Russia A.A. Kozlov, chief engineer E.A. Plotnikov, Cand. Sci. (Eng.), Deputy Head of the Section PAO Raspadskaya, Kemerovo, Russia
The issue is considered related to safe execution of mining operations at the coal mines — effect of coal mechanodestruction on the formation of gasdynamic processes of coal layers underground mining. It is noted that gas desorption and decomposition of metane gas hydrates at the destruction of part of a massif and gas pressure drop — not the only sources of formation of free gas additional volumes, which effect gas dynamics of a bottom-hole part of the coal layer. At Raspadskaya mine in Kuzbass the experiment was conducted on the establishment of the regularities of methane emission coal at coal destruction and its effect on gasdynamic processes occurred in the coal mines. It is established that in the zones of secondary disintegration the natural gas is presented not by pure methane, but the mix of gases. The dependence of total gas pressure in the closed volume on initial conditions and the diameter of particles of coal test is also established. The sections of coal layer subjected to mechanodestruction at the main roof vibrations emerging in case of secondary settlements are the source of additional gas emission from the broken coal that can lead to formation of gasdynamic phenomena.
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