Украинский Государственный Геологоразведочный Институт
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A method for underground degassing of coal seams includes drilling of blast wells to underlying rock of coal seam, with sealing coal seam at side of working face, use of effect of implosion and removal of degassing products. To blasé wells one supplies gas or gas mix that has excess compared to atmospheric pressure, after that coal seam at side of working face is instantaneously de-sealed, and degassing products released at that as result of implosion to working space of face are removed with operating working ventilation system or specially equipped pipeline for following use of those for blast treatment of coal seams.
UAU200906061U2009-06-122009-06-12Method for underground degassing of coal seams
UA45482U
(en)