Explosion suppression efficiency of gaseous phlegmatizing agents in suppressing outbreaks of methane-air mixture in the gas transmission system of coal mines
N.Y. Troshkov1 , D.A. Gerasimenko2
1 Kemerovo Branch, VNIMI JSC, Kemerovo, Russian Federation
2 MMK-Ugol LLC, Belovo, Russian Federation
Russian Mining Industry №3S / 2024 стр. 63-66
Abstract: The challenge of methane emission management in coal mines is considered. Methane extraction is shown for all the stages of mine development. The gas transmission system is identified as the most important element of safety of operation of degasification systems of coal mines. The issue of the methane-air mixture phlegmatization is considered depending on the thermo-physical properties of the phlegmatizers. The occurrence mechanism of the ignition pulse and its possible routes are described. A method is suggested to prevent explosions by phlegmatization of the medium with gaseous substances or their vapors. A mathematical model of this process is presented. Results of the full-scale tests of the methane-air mixture phlegmatization using gaseous nitrogen are given. The value of critical oxygen content is specified. The proposed approach makes it possible to reduce the nitrogen consumption in phlegmatization of the explosive methane-air mixture by 15-26%.
Keywords: methane-air mixture, gaseous phlegmatizing agent, gas transmission system, explosive environment, flame localization
For citation: Troshkov N.Y., Gerasimenko D.A. Explosion suppression efficiency of gaseous phlegmatizing agents in suppressing outbreaks of methane-air mixture in the gas transmission system of coal mines. Russian Mining Industry. 2024;(3S):63–66. (In Russ.) https://doi.org/10.30686/1609-9192-2024-3S-63-66
Article info
Received: 17.06.2024
Revised: 23.07.2024
Accepted: 23.07.2024
Information about the authors
Nikolay Yu. Troshkov – Deputy Director, Kemerovo Branch, VNIMI JSC, Kemerovo, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Dmitry A. Gerasimenko – Deputy Director, MMK-Ugol LLC, Belovo, Russian Federation
References
1. Сенкус В.В., Стефанюк Б.М., Лукин К.Д., Нагайчук С.Н., Сенкус Вал.В. Способ флегматизации взрывов метановоздушной системы в очистном комплексно-механизированном забое. Горный информационно-аналитический бюллетень. 2011;(10):326–329. Режим доступа: https://giab-online.ru/files/Data/2011/10/Senkus_10_2011.pdf (дата обращения: 04.06.2024). Senkus V.V., Stefanyk B.M., Lukin K.D., Nagaictuk S.N., Senkus Val.V. Method of phlegmatization methane explosion in longwall mine. Mining Informational and Analytical Bulletin. 2011;(10):326–329. (In Russ.) Available at: https://giab-online.ru/files/Data/2011/10/Senkus_10_2011.pdf (accessed: 04.06.2024).
2. Стефанюк Б.М., Сенкус В.В., Лукин К.Д., Гершгорин В.С. Законы пределов взрываемости пылеметановоздушной среды и человеческий фактор в причинах возникновения взрывов. Горный информационно-аналитический бюллетень. 2008;(9):26–28. Stefanyk B.M., Senkus V.V., Lukin K.D., Gershgorin V.S. Laws of resistance limits to blasting of the dust-methane-air medium and the human factor in explosion causes. Mining Informational and Analytical Bulletin. 2008;(9):26–28. (In Russ.)
3. Стефанюк Б.М., Кайдо И.П., Фомичев С.Г. Профилактика взрывов метана и угольной пыли на шахтах. Уголь. 2000;(3):47–48. Stefanyuk B.M., Kaido I.P., Fomichev S.G. Prevention of methane and coal dust explosions in mines. Ugol’ 2000;(3):47–48. (In Russ.)
4. Розловский А.И. Основы техники взрывобезопасности при работе с пожарными газами и парами. 2-е изд. М.: Химия; 1980. 376 с.
5. Фролов Ю.Ф. (ред.). Теория горения и взрыва. М.: Наука; 1981. 412 с.
6. Ландау Л.Д., Лифшиц Е.И. Гидродинамика. 3-е изд. М.: Наука; 1986. Т. 4. 736 с.
7. Болбат И.Е., Сергеев В.С. О взрываемости метановоздушной смеси высокой концентрации в больших объемах. В кн.: Техника безопасности, охрана труда и горноспасательное дело: реф. сб. М.: ЦНИЭИуголь; 1979. С. 14–15.
8. Льюис Б., Эльбе Г. Горение, пламя и взрывы в газах [К.И. Щелкин, А.А. Борисов (пер.)]. М.: Мир; 1968. 592 с.
