FIELD: mining.
SUBSTANCE: invention refers to mining industry, and namely to coal series gasification methods. Method includes development of upper coal, installation of gas collector in a working space, its sealing on the daylight surface side, and gasification of the rest coal series in ascending order with discharge via methane drainage boreholes from methane gas collector, which is released from unmined coal being developed, and generated gas leakages. Methane drainage boreholes are bored from the surface.
EFFECT: improving efficiency of gas removal up to 60-65% during in-situ gasification.
2 cl, 2 dwg, 2 ex
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