Mechanisms and Causes of Methane Explosions in Highly Productive Coal Mines
M. V. KURLENYA, V. A. SKRITSKY
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
Keywords: угольный пласт, горное давление, вентиляция выработок, самовозгорание угля, взрыв метана, безопасность горных работ, coal bed, rock pressure, mine ventilation, coal self-ignition, methane explosion, mining safety
Abstract
The review of accidents connected with explosions in gently dipping and inclined coal bed mining with mechanized equipment is presented. It is shown that the most probable cause of the explosions is inflammation of methane-and-air mixture induced by the sources of coal self-ignition in mines. The explosion wave brings burning gas in the production heading and adjacent tunnels and causes blasting of coal dust. The mechanism of coal self-ignition in edge areas in inter-panel pillars exposed to high rock pressure is described.
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