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It is a known fact that 95% of China’s coals have been exploited by the underground mining technology under complex geological conditions and poor working environment with possibly serious disasters of gas explosion, which is difficult to be predicted and controlled. With the increase of mining depth, serious risk might rocket remarkably[1-14]. To guarantee the safety of the underground mining, it is the very time to investigate the flame’s propagation in the gas explosion process, so that we can prevent and control the flame to reduce the explosion hazard. In this paper we will reveal the propagation law of flame in a pipeline numerically and experimentally.

Propagation law of flame in a pipeline produced in gas explosion: numerical analysis and experimental verification