EFFICIENCY OF METHANE DRAINAGE OF COAL SEAMS IN POLISH UNDERGROUND MINES

The coal exploitation in Polish mines be led in conditions of associated natural threats, such as methane, fire and coal dust explosion threats. The drainage of orogene is one of the basic middle self-control of methanated threat. To possibility of drainage of orogene led from surface and from underground excavations with holes. Methane drainage in Polish coal mine be lead from: exploitation working, dog heading, especially in time their driving, goaf. Methane drainage is estimated across methane stream flow accompanied in drainage processes to catfish of methane flow from drainage and ventilation.