FIELD: mining.
SUBSTANCE: vertical degassing wells are drilled from day surface until crossed with coal bed, afterwards, ring drilling out of inclined degassing wells is done along coal bed from single mine. Afterwards, in all degassing wells hydraulic rupture is arranged at a distance defined experimentally for each coal bed. Then heads of degassing wells are connected to gas suction plants. Produced methane-air mixture is cleaned from water and other admixtures, liquefied and injected into storage reservoirs.
EFFECT: preliminary degassing of coal beds, prevention of methane gas explosions in mining of highly gas-bearing beds, reduction of methane gas content in coal bed, increased gas recovery of degassing wells, increased safety of mining works.
2 dwg
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