自然风压对北岭煤业通风的影响分析

Influence Analysis of Natural Wind Pressure on Ventilation in Beiling Coal Industry

矿井自然风压的形成是矿井空气温度、密度、湿度、空气成分和井深等多重因素综合作用的结果,结合北岭煤业自然风压对通风系统的影响,定性分析了北岭煤业自然风压的形成和变化,得出结论:气温变化影响两个进风巷联巷各自的综合风压,导致两个进风井的进风量发生变化。根据分析结果,采取了增大主进风井(副斜井)风阻、适当降低加热风机功率,减小副进风井(副斜井)风阻、适当提高加热风机功率的措施,两个进风井的风量回归正常。

The formation of natural wind pressure is the result of the multiple factors,inclu-ding air temperature,density,humidity,air composition,and well depth in mines.The study qualitatively analyzed the formation and changes of the natural wind pressure based on its influ-ence on the ventilation system in Beiling Coal Industry.The results show that:air temperature variation affects the compre hensive wind pressure through two air inlet lanes respectively,res ul-ting in changes of supply air rate of the two air intake shafts.Accordingly,some measures were taken,including increasing the wind resistance and lowering the hea ting fan power of the main in-take shaft(auxiliary inclined shaft),and reducing the wind resistance and increasing the hea ting fan power of the intake shaft(auxiliary inclined shaft)where return air occurs.The composition of the two inta ke shafts returns to the normal value.