Interaction of Geomechanical and Physicochemical Processes in Kuzbass Coal
V. N. OPARIN1,2, T. A. KIRYAEVA1, V. YU. GAVRILOV3, R. A. SHUTILOV3, A. P. KOVCHAVTSEV4, A. S. TANAINO1, V. P. EFIMOV1, I. E. ASTRAKHANTSEV1, I. V. GRENEV3
1Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
2Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090 Russia
3Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 5, Novosibirsk, 630090 Russia
4Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 13, Novosibirsk, 630090 Russia
Keywords: stress-strain state, temperature, coal, volatile yield, specific surface, structure, porosity, density, oxidation, combustion, outburst hazard, coal ranks, classification
Abstract
The paper presents laboratory and in situ research data on interaction of geomechanical and physicochemical processes in Kuzbass coal of various ranks, considering temperature effect. Under analysis is the relation of stress-strain state, temperature and infrared radiation of coal. The authors study the role of temperature and microstructure of coal in energy and mass exchange processes (variation of mass, volatile yield, specific surface, internal methane relaxation energy and moisture content). Interrelation of outburst hazard and fire hazard in coal is discussed from the viewpoint of uniform stage-wise thermomechanics and thermochemistry of coal behavior in the course of coal formation and extraction. The article introduces an index for quantitative description of petrographic properties of coal. Using this index, the authors classify and describe petrographic groups of Kuzbass coal.
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