Method for methane drainage of rock mass surrounded by the mining longwalls

摘要

method odmetanowania earth surrounded by walls with at least two long operating beam holes drilled drainage, cyclically with the duct walls, oblique on board operated in direction of excavation and containing sealed tube y obsadowe at the initial episode of used independently of other ways odmetanowania,is characterized by the fact that odmetanowanie leads in the zone above and front walls (6) by means of mining drainage (1, 2) orurowanych throughout the length of urabialnymi mechanically perforated pipes.