E3S Web Conf.
Volume 174, 2020Vth International Innovative Mining Symposium
|Number of page(s)||7|
|Section||Environment Saving Mining Technologies|
|Published online||18 June 2020|
Detection and location of places of spontaneous combustion of coal in mines due to gas anomalies on the earth’s surface
1 T.F. Gorbachev Kuzbass State Technical University, Department of an aerology, labor protection and nature, 650000 Kemerovo, 28 Vesennya st., Russian Federation
2 T.F. Gorbachev Kuzbass State Technical University, Department of chemistry, technology of inorganic substances and nanomaterials, 650000 Kemerovo, 28 Vesennya st., Russian Federation
3 T.F. Gorbachev Kuzbass State Technical University, Department of building structures, water supply and sanitation, 650000 Kemerovo, 28 Vesennya st., Russian Federation
4 Federal State Institution “National Rescue Center” Ministry of Emergency Situations of Russia, 654044, Novokuznetsk, Prospect Aviatorov, 54, Russian Federation
5 Mining Institute of the Ural Branch of the Russian Academy of Sciences, 614007, Perm, Siberian Str., 78a, Russian Federation
∗ Correspondent author: firstname.lastname@example.org
The effectiveness of localization and extinguishing of places of underground fires that occur in mine worked out spaces depends on information about the location of a place of spontaneous combustion. Existing methods to detect the processes of coal spontaneous combustion in mines include monitoring the content of gases in mine atmosphere, released during the spontaneous combustion of coal. However, this control method does not allow determining the location of a place of combustion, since the paths of gas movement in the worked out space are unknown. The surface gas survey allows to determine the location of the underground fire. The calculations showed that gases, generated in the fire seat, spread to the earth’s surface due to molecular diffusion, the thermal depression developed by the fire seat and the drops of air pressure created by the ventilation fans. The dependences of the distribution of fire gases content in rocks on the rate of drops of air pressure between the worked out space in a mine with a fire seat and the atmosphere on the surface of the earth are obtained. Mine researches have confirmed the formation of anomalies of fire gases in rocks and soil over places of spontaneous combustion of coal occurred in worked out space. When conducting a gas survey, it is sufficient to measure the content of fire gases in the soil at a depth of 0.5-1.0 m.
© The Authors, published by EDP Sciences, 2020
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