Gases of the Face Space at the Coal Mining Area


Annotation:

Geology of the coal deposit gases is determined by their gas saturation, age-old gas migration, gas content and gas permeability of coal and rock layers, the conditions of their occurrence, and other factors. The main gases of coal deposits are methane, the ignition temperature of which in the air varies between 650–750 °С, carbon monoxide (610–658 °С), hydrogen (530–590 °С), and hydrogen sulfide (290–320 °С). The processes of formation of explosive situations in the coal mines are much faster if there are hybrid mixtures in different combinations and volumes of methane, hydrogen sulfide, carbon monoxide, and fine coal dust in the mine atmosphere.

The intensity of methane and coal dust release in the conditions of coal mines during the destruction of the coal mass by the combine and the removal of dust by air flows flowing through the network of the workings is assessed. The content of other explosive substances and gas components in the coals that contribute to the formation of explosive situations in the faces or negatively affect the miners breathing is determined.

The content of petrographic groups of vitrinite and fusinite, semivitrinite and leiptinite in coals, and the release of volatile substances determines the intensity of methane release into the mine atmosphere. Every fifth or seventh explosion of methane and fine dust occurs from friction sparking during the friction of the incisors of the combine actuating device with inclusions of sulfur-containing pyrite. The burning time of which is ten times longer than the time of existence of a red-hot trace formed during the interaction of the incisors of the combine actuating device with hard rocks, including pyrite. The presence of hydrogen sulfide-containing substances in the coal gives hydrogen sulfide a leading place in the process of formation of explosive situations from friction sparking in the coal mines of Kuzbass and Vorkuta.

References:
  1. Gas content of coal basins and deposits of the USSR: genesis and regularities of natural gas distribution in the coal basins and deposits of the USSR. In 3 volumes. Vol. 3. Moscow: Nedra, 1980. 219 p. (In Russ.).
  2. Instructions for determining and predicting the gas content of coal seams and enclosing rocks during geological exploration works. Moscow: Nedra, 1977. 96 p. (In Russ.).
  3. Ruban A.D., Zaburdyaev V.S., Zaburdyaev G.S., Matvienko N.G. Methane in the mines and ore mines of Russia: forecast, extraction and use. Moscow: IPKON RAN, 2006. 312 p. (In Russ.).
  4. Mining encyclopedia. In 5 volumes. Vol. 4. Moscow: Sovetskaya entsiklopediya, 1989. 522 p. (In Russ.).
  5. Mining engineering. Encyclopedic reference book. In 11 volumes. Vol. 6. Moscow: Ugletekhizdat, 1959. pp. 11–19. (In Russ.).
  6. Zaburdyaev G.S. Volatiles are hazardous. Dust explosion protection during mining operations at the coal mines of Russia. Okhrana truda i sotsialnoe strakhovanie = Occupational safety and social insurance. 1988. № 9. pp. 44–46. (In Russ.).
  7. Zaburdyaev V.S., Podobrazhin S.N., Skatov V.V. Conditions and Causes of the Formation of Explosion and Hazardous Situations on Gas and Dust in the Mines. Bezopasnost truda v promyshlennosti = Occupational Safety in Industry. 2017. № 3. pp. 65–68. (In Russ.). DOI: 10.24000/0409-2961-2017-3-65-68
  8. Zaburdyaev V.S. Patent RF № 2536544. Method for predicting the risk of explosions of hybrid mixtures in the mines and ore mines. Applied: July 18, 2013. Published: December 27, 2014. Bulletin № 36.
  9. Zaburdyaev G.S. Anthropogenic and natural causes of explosions of methane-air mixtures in the mines. Gornyy informatsionno-analiticheskiy byulleten = Mining informational and analytical bulletin. 2000. № 7. pp. 161–165. (In Russ.).
  10. Zaburdyaev G.S. Ensuring the productivity and safety of work in the process of coal mining by methane and dust factors. Gornyy informatsionno-analiticheskiy byulleten = Mining informational and analytical bulletin. 2000. № 2. pp. 88–92. (In Russ.).
  11. Zaburdyaev V.S. Effect of Coal Gas Petrographic Composition on Gas Recovery in the Wells. Bezopasnost truda v promyshlennosti = Occupational Safety in Industry. 2019. № 1. pp. 14–19. (In Russ.). DOI: 10.24000/0409-2961-2019-1-14-19
  12. Ruban A.D., Zaburdyaev G.S., Zaburdyaev V.S. Geotechnological problems of developing coal seams that are gas and dust hazardous. Moscow: Nauka, 2007. 279 p. (In Russ.).
  13. Ruban A.D., Artemev V.B., Zaburdyaev V.S., Zaburdyaev G.S., Rudenko Yu.F. Problems of ensuring high performance of working faces in the methane-rich mines. Moscow URAN IPKON RAN, 2009. 396 p. (In Russ.).
  14. Enns A.A., Panteleev A.S., Skatov V.V. Industrial degassing in the mines of Pechora coal basin. Gornyy informatsionno-analiticheskiy byulleten = Mining informational and analytical bulletin. 2001. № 3. pp. 120–123. (In Russ.).
DOI: 10.24000/0409-2961-2020-8-48-52
Year: 2020
Issue num: August
Keywords : mine coal seam methane face space coal mining area ore mine air rogen sulfide petrographic components frictional sparking iron pyrites
Authors: