Numerical Study of the Effectiveness of Explosion-Proof Water Barriers in Case of an Emergency Methane Explosion in Coal Mines

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Resumo

The results of numerical simulation of the damping of an air shock wave from an emergency methane explosion in a mine are presented. The results of an analysis of the effectiveness of using water barriers to reduce the intensity of air shock wave, depending on their length, are presented. The effect of the gradual deposition of water droplets from the water barrier onto the walls of the mine on the intensity of the shock wave passing through the barrier has been determined. The rate of precipitation of water droplets from the gas-droplet mixture formed by the interaction of the shock wave with the water barrier has little effect on the intensity of the shock wave passing through the barrier.

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Sobre autores

A. Kraynov

Tomsk State University

Autor responsável pela correspondência
Email: akrainov@ftf.tsu.ru
Rússia, Tomsk

O. Lukashov

SHAKHTEXPERT-SYSTEMS LLC

Email: akrainov@ftf.tsu.ru
Rússia, Kemerovo

A. Oberemok

Tomsk State University

Email: akrainov@ftf.tsu.ru
Rússia, Tomsk

K. Moiseeva

Tomsk State University

Email: akrainov@ftf.tsu.ru
Rússia, Tomsk

N. Florya

Tomsk State University

Email: akrainov@ftf.tsu.ru
Rússia, Tomsk

Yu. Shalaev

Tomsk State University

Email: akrainov@ftf.tsu.ru
Rússia, Tomsk

Bibliografia

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  2. Rostechnadzor Order No. 506 dated 12/08/2020 “On Approval of Federal Standards and Regulations in the field of industrial safety “Instruction on Aerological Safety of Coal Mines” (registered with the Ministry of Justice of Russia on 12/29/2020 No. 61918). https://docs.cntd.ru/document/573264143
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2. Fig. 1. Pressure distributions along the excavation length at fixed time moments with a period of 1 s from the moment of methane-air mixture explosion (a) and at the time moment of 10 s (b). Dashed line - no water barriers, black - β = 0.0 m/s, grey - β = 10.0 m/s, Δ = 30 m.

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3. Fig. 2. Pressure variation in time at a point 2000 m from the dead end. The designations are the same as in Fig. 1.

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4. Fig. 3. Pressure distributions along the mine length at fixed time points with a period of 1 s from the moment of methane-air mixture explosion (a) and pressure changes in time at a point at a distance of 2000 m from the dead end (b). Solid thin line - no water barriers, dashed line - Δ = 10 m, solid thick line - Δ = 30 m, grey line - Δ = 60 m, β = 1 m/s.

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