FIELD: mining.
SUBSTANCE: invention relates to underground coal gasification and in particular to ensure permeability of coal bed. Invention provides use of a system for supplying a compressed alkaline dispersion. Said system comprises a source of alkali, a source of a compressed fluid medium and a feed pipe. Feed pipe comprises a fluid inlet, which is connected to a source of compressed fluid medium, an inlet pipe for alkali, connected to source of alkali, and an outlet linked with well head for introduction of compressed alkaline dispersion into coal bed. There is also a sprayer connected with inlet pipe for alkali. Sprayer enables formation of alkaline fog, which can be mixed with compressed fluid medium in feed pipe to for a compressed alkaline dispersion.
EFFECT: technical result is improved reliability of system for providing required permeability of coal bed.
8 cl, 3 tbl, 6 dwg
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