Secondary Fire Induced by Mine Methane Explosions

Abstract:

The mechanism of fire induced by methane explosions was studied to know about the great danger of induced fire. Firstly, from the point of heat ignition to study it, then the especial heat environment after explosions was studied. Lastly, from the point of characteristics of gas separated from fuel to judge whether fire to be induced. The part of heat ignition was based on conservation of energy. And the special heat environment was studied by using CFD software Fluent to do some numerical simulation. As to gas separated from fuel, mainly from three aspects to discuss it: yields of gas and relating conversion, diffusion velocity, minimum combustion supporting oxygen concentration. And the research shows that, if the gas separated out from fuel could diffuse to satisfy the minimum combustion limit before the temperature of environment reduce to its fire induced temperature, and there is enough oxygen, sub-fire could be induced. This research could provide some technique support to prevent and cure such kind of accident, and has great significance.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 1325-1333
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.1325
• Online since: May 2012
• Authors: Yu Long Duan
• Keywords: Explosions, Fire, Methane, Mine

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