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Journal of Mining Sciences

2016 year, number 3

Initiation of Underground Fire Sources

V. N. OPARIN1,2, T. A. KIRYAEVA1, V. YU. GAVRILOV3, YU. YU. TANASHEV3, V. A. BOLOTOV3
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 Lavrentieva 5, Novosibirsk, 630090 Russia
Keywords: выбросо- и пожароопасность угольных пластов, уголь, пористость, температура, выход летучих, стадии метаморфизма, массо-газообменные процессы, химических состав газов, coal outburst- and fire-hazard, coal, porosity, temperature, volatile yield, ranks, mass- and gas-exchange processes, chemical composition

Abstract

Parameters of porous structure of different rank Kuzbass coal and gas- and mass-exchange processes under coal heating are analyzed. The main part of volatile matter is dissolved in the volume of coal layers. For all coal specimens, it is typical that mass fraction of methane and ethane decreases with temperature while mass fraction of hydrogen, carbonic oxide and ethane increases. The latter gases can be the sources of violent burning of coal beds. UHV pyrolysis of bituminous coal reveals physical balance and composition of gaseous products. The results permit coal rating based on carbonization, enable recommending using inert gases in underground fire fighting and allow estimating temperature level in fire source zones in coal beds based on chemical composition of emitted gases.