Longwall Air Systems in Condiion of Methan and Rock-Bust Hazard

摘要

The paper presents potential increased afterburst hazard in the case of working in the seams prone to afterbursts．Chosen airing systems of longitudinal longwalls pplied in the afterburst hazard conditions were also discussed．Substitute airing systems-their potential and range of use aiming at limiting insufficiently aired zones，which can result from afterbursts，were pointed out．