FIELD: mining industry.
SUBSTANCE: method includes feeding fresh air along air ducts due to generic depression, and output stream is taken partially through supported mines due to generic depression and partially - through extracted space of extracted or previously extracted column by means of gas-sucking plant. Methane support control in fresh and output streams is maintained. From the surface into air duct a ventilation shaft is drilled and additional fresh air is fed therein in same direction with main stream. Adjustment of methane containment in air streams at extraction portion is performed by changing amount of air, fed additionally.
EFFECT: increased volume of fed fresh air without substantial reconstruction of ventilation system.
1 dwg, 1 ex
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