FIELD: mining.
SUBSTANCE: invention relates to mining industry and is used for ventilating coal lava, including gas lava, during development of extraction pillars. Method of coal lava ventilation, which includes supply of fresh air into a restricted mine opening and dilution of gas mixture in it by means of an axial jet fan installed on a vehicle, characterized in that said fan is used for dilution of methane-air mixture in coal lava at continuous movement of vehicle in form of combine in coal mining, while its jet is directed to one side with outgoing jet.
EFFECT: technical result consists in reduction of concentration of methane in methane-air mixture near the machine by increasing the air content in the methane-air mixture without increasing air leaks into the mined space by the reduction of concentration of methane in methane-air mixture near the machine and along lava by means of the reduction of aerodynamic resistance of section of coal lava with combine.
1 cl, 2 dwg
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