METHOD OF COAL SEAM'S BEDROCK MINE DEGASIFICATION

摘要

The method of mine degassing of a coal seem bedrock from an incline of 8 degrees up to steep mining from the field using degassing bore holes and removing such gasses from these bore holes, based on the fact that degassing bore holes with a diameter of 50 to 150 mm and 60 to 100% in length are made from long mining works in a distance of 10 to 130 m behind the passing face. At the same time, each degassing bore hole is carried out into the bedrock of the mined coal seam up to the surface with an incline of at least 2 degrees, but not more than 3 degrees lower than the incline of the mined coal seam.