(l) Ventilation is the main measure to prevent gas accumulation. Reasonable selection of the best ventilation system, enhanced ventilation management, effective, stable and continuous, in order to timely discharge the gushing gas, so that the mining face and production wells The gas concentration in the medium meets the requirements of the Regulations.
(2) The place where gas is easily accumulated in the timely production of local gas accumulation is: the corner of the working face on the mining face, the cavity falling from the roof, the roof near the low wind speed, the blind alley that stops the wind, and the goaf of the mining face boundary and nearby coal mining. Timely treatment of local gas accumulation is an important part of daily gas management in mines, and also a key task in preventing gas explosion accidents and ensuring safe production. The main method usually adopted is to increase the air supply volume or increase the wind speed to the gas storage location, and dilute the gas; to block the gas accumulated in the blind alley and the roof cavity; and take measures for pumping if necessary.
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