Application of Equal Pressure Ventilation Technology in Low Oxygen Treatment of Return Air Corner in Mining Face
The 5203 fully mechanized mining face is buried shallowly,and there are air leakage channels between the goaf and the overlying coal seam,as well as ground air leakage cracks.This has led to problems such as excessive CO concentration in the return air corner and low oxygen concentration during the mining process of the 5203 fully mechanized mining face,which restricts the safety production of the mining face.Based on the ventilation system of the mining face and on-site production conditions,it is proposed to apply the pressure equalization ventilation technology to the treatment of low oxygen concentration in the return air corner of the mining face.By balancing the pressure between the mining face and the goaf,the goal is to control the influx of harmful gases into the mining space.Based on the on-site situation,the model of the uniform pressure ventilation fan and the layout of the uniform pressure ventilation facilities are determined.After on-site application,the problems of high CO concentration and low oxygen concentration in the return air corner of the 5203 fully mechanized mining face have been effectively solved,which can ensure the safe recovery of coal in the mining face.
NETL
NSTL
万方数据
维普
