Cyclical Behavior of Methane Emission in a Longwall
A. A. ORDIN1, A. M. TIMOSHENKO2, A. A. METEL’KOV3, S. A. KOLENCHUK3
1Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
2VostNII Science Center, ul. Institutskaya 3, Kemerovo, 650002 Russia
3Giprougol Institute, ul. Trikotazhnaya 41a, Novosibirsk, 630015 Russia
Keywords: шахта, очистной забой, длина лавы, метановыделение, концентрация метана, циклические закономерности, mine, production heading, longwall length, methane emission, methane concentration, cyclical behavior
Abstract
The authors have revealed analytical dependences for the length of a longwall and the background methane emission from a coal bed, mined-out void and wall rocks during a maintenance shift. The actual values of methane release in Kotinskaya Mine and methane concentration in a breakage heading of Kostromovskaya Mine, Belon, measured using air-and-gas control equipment are presented. The authors evaluate theoretical relationships for the cyclical behavior of methane release during a work shift in a production heading of a coal mine.
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