Experimental study on coal mine gas explosion suppression with inert gas N<sub>2</sub>/CO<sub>2</sub>

Zhang Yingxin; Wu Qiang; Liu Chuanhai; Jiang Bingyou; Zhang Baoyong

doi:10.11883/1001-1455(2017)05-0906-07

Volume 37 Issue 5

Jul. 2017

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Zhang Yingxin, Wu Qiang, Liu Chuanhai, Jiang Bingyou, Zhang Baoyong. Experimental study on coal mine gas explosion suppression with inert gas N2/CO2[J]. Explosion And Shock Waves, 2017, 37(5): 906-912. doi: 10.11883/1001-1455(2017)05-0906-07

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Zhang Yingxin, Wu Qiang, Liu Chuanhai, Jiang Bingyou, Zhang Baoyong. Experimental study on coal mine gas explosion suppression with inert gas N₂/CO₂[J]. Explosion And Shock Waves, 2017, 37(5): 906-912. doi: 10.11883/1001-1455(2017)05-0906-07

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Experimental study on coal mine gas explosion suppression with inert gas N₂/CO₂

doi: 10.11883/1001-1455(2017)05-0906-07

1.
School of Safety Engineering, Heilongjiang University of Science and Technology, Harbin 150022, Heilongjiang, China
2.
School of Mining and Safety Engineering, Anhui University of Science and Technology, huainan 232001, Anhui, China

Received Date: 2015-12-30
Rev Recd Date: 2016-07-08
Publish Date: 2017-09-25

Abstract

Abstract

To determine the effect of inert gas (N₂ and CO₂) on the process of mine gas explosion, we carried out mine gas explosion experiments in a medium-size pipe with the volume fractions of N₂ or CO₂ filled in three components of mine gas samples which were respectively 0%, 9% and 14%, and successfully obtained the explosion suppression characteristics of N₂ and CO₂. Then we conducted comparative analysis of the explosion overpressure histories and explosion suppression capacity of inert gas N₂ and CO₂ in the gas explosion process. The results show that the gas explosion overpressure decreases significantly with the increase of N₂ or CO₂ volume fraction in the mixed gases, and the explosion suppression capacity of CO₂ is better than that of N₂. Moreover, the explosion suppression effect of N₂ and CO₂ is much more obvious when the gas sample has a higher CH₄ concentration.
- gas explosion,
- inert gas,
- explosion suppression,
- explosion overpressure

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References(20)

References

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