采用均压技术抑制有害气体涌入工作面

Application on Pressure-equalizing Technology to Restrain the Influx of Harmful Gas into Working Face

介绍了采用均压技术抑制相邻采空区CO、CH4涌入生产工作面的技术。该工作面开采3#煤层,其工作面上部为曾经发生过煤层自燃发火的原北二下山2#煤层、3#煤层采空区。为防止采空区的CO、CH4等有害有毒气体涌入工作面,通过打观测孔、建立均压系统,以此降低北二下山采空区与工作面之间的风压差,进而达到抑制有害气体涌入工作面的目的。

Introduces the pressure - equalizing technology to restrain the influx of CO and CH4 from adjacent gob into active workings. This face is located at 3# seam, above the face is the gob of 2# and 3# seam where spontaneous combustion happened before. In case of the influx of harmful gas of CO and CH4 from adjacent gob into active workings, by making observation borehole and establishing pressure -equalizing system, the leeway between gob and working face was lowered and the target of controlling harmful gas was realized.