Coupled inert gas fire prevention and extinguishing technology in coal mine
An anti-extinguishing and inert gas technology, applied in the direction of fire prevention, dust prevention, mining equipment, etc., can solve the problems of serious air leakage, nitrogen leakage, unreachable, etc., and achieve the effect of cost saving, simple equipment and improved effect.
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[0009] Examples, see attached figure 1 The coupled inert gas fire-fighting technology in underground coal mines is first based on the coupled inert gas injection flow when inert gas is used for fire prevention and fire extinguishing in the goaf area of coal mines. The calculation formula is as follows: Q n =60KeQ 0 (C 1 -C 2 ) / (C n +C 2 -1). Where: Q 0 -The air leakage in the oxidation zone of the goaf is generally taken as one percent of the air flow at the working face; C 1 -The average oxygen content of the oxidation zone in the goaf, C 2 -Fire and inerting index of oxidation zone in goaf, C n -Coupling inert gas purity, K-transmission coupling inert gas pipeline loss coefficient is 1.1~1.2, e-fire prevention purpose: fire prevention 1, suppression high temperature floating coal is 1.3. The following calculation is based on a specific example: Q 0 :The air volume of the working face is 1400m 3 / min, take Q 0 14m 3 / min; C 1 Take 15%; C 2 Take 7%; C n Take 98%; K takes 1.1; ...
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