FIELD: mining.
SUBSTANCE: method includes regulated supply of air blow (oxidant) to burning hot coal surface along length of blow well bored and cased along whole length including coal bed. A heat source is fixed along the length of the blow well by means of hydraulic-dynamic regulation of air blow consumption from minimum, at which a heat source is transferred along the well towards pressurised blow to maximum consumption, when the heat source is fixed in nearest zone of the burning hot coal surface of the bed. Coal is de-gassed with high heat-power indices. Upon de-gassing strips of coal bed between the blow and gas exhausting wells at maximal consumption of blow, consumption is reduced to minimum and the heat source is transferred towards pumped air blow to a new zone of the blow well. Further consumption of blow is raised to maximum and a new strip of coal bed is de-gassed.
EFFECT: obtaining high heat-power indices at underground gasification of coal.
3 cl, 1 dwg, 1 ex
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