Full Air Pressure Ventilation Technology on Fully Mechanized Caving Face of Inflammable Thick Seam During Stent Removal Period

During withdrawing period of inflammable thick seam fully mechanized caving face,under the premise of fire pretreatment on the working face,using the setting of air duct and regulating of the return air side ventilation device,full air pressure ventilation technology was utilized,which ensured the safety retracement of working face.