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Consideration of the
features of formation of an explosive methane-air environment for safe isolation
of emergency areas during a fire in coal
mines
N.O. Kalugina1*, S.P. Minieiev2,
I.B. Belikov3, A.S. Chernyk3, O.O. Vinnik1
1Branch for Physics of Mining Processes
of the M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine
2Institute of Geotechnical Mechanics named of the M.S. Polyakov of the National Academy of Sciences of Ukraine, Dnipro, Ukraine
3State Militarized Mountain Rescue Service, Myrnograd, Donetsk Region, Ukraine
*Corresponding author: kalugina_n_a@ukr.net
Physical and technical
problems of mining production, 2023, (25), 5-14.
https://doi.org/10.37101/ftpgv25.01.001
full text (pdf)
ABSTRACT
Purpose. Study of the influence of
gas emission characteristics in the mining system to improve the method of
safe isolation of emergency areas during fires in coal
mines.
Methods The work uses a
numerical analysis of the model of filtration-diffusion movement of methane
in mine workings, taking into account the emergency
situation.
Findings. As a
result of the research, it was proposed to take into account the
evolution of methane concentration in the mine atmosphere to improve the
calculation of the distance of safe isolation of emergency areas during
fires in coal mines.
Originality. Based on the release of
methane from a coal seam through a filtration-diffusion mechanism, it is proposed to take into account the influence of its sorbed phase on the intensification of a possible
explosion of a methane-air mixture in an emergency.
Practical implications. The results obtained are intended to improve
the methodology for calculating the laying of explosion-resistant bridges
when isolating a fire based on the characteristics of methane release in
mine workings.
Keywords: fire, explosion-proof jumpers, explosion,
methane-air mixture, safe distance, coal mine
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