METHOD FOR DEGASSING UNDERMINED COAL-ROCK MASSIF

摘要

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.