Государственное Высшее Учебное Заведение “Донецкий Национальный Технический Университет”
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A method for degassing undermined coal-rock massif includes drilling degassing wells from development working in front of the face to concomitant beds and layers of gas-bearing rocks, with casing each well and sealing its mouth, connection of degassing pipeline to it, gas suction from the well and erection of cover construction in worked-out space. Concentrically to axis of degassing well one drills bore holes and fills those with polyurethane foam.
UAU201210620U2012-09-102012-09-10Method for degassing undermined coal-rock massif
UA77829U
(en)