我们在“易燃厚煤层无柱煤开采防、灭火”的研究中,用示踪气体(SF_(?))对采空区漏风进行了初步考察。这次考察的地点是柴里煤矿334、335、314、309、350等老采空区及分层开采的上部采空区。考察和分析采空区风流状况,对于预防煤炭自燃,估计火源点位置,以及了解在无 We conducted a preliminary investigation of the air leakage in the goaf with the tracing gas (SF_ (?)) In the study of “preventing and extinguishing fires without pillage coal in flammable thick seams.” The site of the inspection was the old mined-out areas such as 334,335,314,309,350 in Chaili Coal Mine and the upper mined-out area in stratified mining. Investigation and analysis of gully air flow conditions, for the prevention of coal spontaneous combustion, estimating the location of the fire source, as well as in understanding