Институт Геотехнической Механики Ім. М.С. Полякова Нан Украины
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Method for extraction of coal and gas includes penetration of road drift, group inclined working, well drilling on coal seam, casing those with pipes, sealing, hydrodynamic effect on coal seam through supply of working liquid under pressure with following sudden pressure release and delivery of water-coal-gas mix through well. Wells are drilled by propagation of seam from special drill niches arranged at both sides by seam pitch in each . Casing pipes from all the wells are installed to working compartment that is hermetically separated from path compartments, and on ventilation drift one connects it to degassing system of mine. Hydrodynamic effect through wells is performed with alternation from up downwards by seam pitch, during that effect water and gas are delivered through working compartment down to road drift and gas – by working compartment up to degassing system of mine.
UAU200900078U2009-01-052009-01-05Method for production of coal and gas
UA42109U
(en)