Statistical Analysis of Methane Release in High-Production Coal Faces in Kuzbass
A. A. Ordin1,2,3, A. M. Timoshenko4, D. V. Botvenko4
1Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Institute of Computational Technique, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
3VostNII Science and Production Center, Kemerovo, Russia
4VostNII Science Center, Kemerovo, Russia
Keywords: шахта, угольный пласт, метановыделение, концентрация метана, статистический анализ, допускаемая производительность очистного забоя, газовый фактор, скорость подачи комбайна, выход фракций, mine, coal seam, methane release, methane concentration, statistical analysis, alolowable coal face output, gas criterion, shearer feed velocity, yield of fracions
Abstract
The statistical analysis results on methane release in coal faces in Kuzbass are presented. The parabolic curves of methane release have maximums as regard to feed velocity and productivity of shearer. Methane release from broken coal is an inverse proportional function of linear hyperbolic dependence and has maximum as regard to feed velocity and productivity of shearer. The analysis of the found methane release from broken coal shows that methane release reduces as a quadratic dependence with decreasing drum rotation speed and number of picks per cutting line, and increases also as a quadratic dependence with growing thickness of coal seam and shearer web width.
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