The Qualitative Identification of Air Leakage Channels in Goaf Based on the Tracer Gases

According to the continuous release principle of tracer gases, by determining the shortest distance of samples, the sample time and release volume and other air leakage determination parameters, the new portable tracer gas detector is adopted to inspect air leakage in the goaf high lane, air flow leak from face into the goaf and outflow and air leakage of the high pumping lane are got. This parameter provides a basis for mine fire control.