International Journal of Earth Sciences and Engineering

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Basing on thermodynamics and fluid mechanics, the viscous hindering effect of mine fire on fluid flow and throttling effect were analyzed in detail. Beyond that, fire resistance was classified according to various generation mechanisms. Fire resistance was composed of local resistance formed by barrier effect of flame and viscous frictional resistance formed by thermal plume. Numerical simulation experiments showed that the viscous resistance of the air flow becomes larger once a fire occurs in the tunnel, and it increases with the scale of fire. Throttling effect is influenced by fire scale and inlet airflow rate. It increases with the scale of fire and decreases with the increasing of inlet airflow rate. Study results have important practical significance for the simulation of the mine fire and the guidance of scientific disaster relief.

Keywords

Tunnel Fire, Heat Resistance, Throttling Effect, Fluent, Reverse Flow.
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