局(ju)部(bu)通(tong)(tong)風(feng)是指掘(jue)進工(gong)(gong)作(zuo)面的(de)通(tong)(tong)風(feng)。在開采地下(xia)井巷時，為(wei)了供給新鮮空氣、稀釋并排出掘(jue)進工(gong)(gong)作(zuo)面的(de)煙、塵和有害氣體、創造(zao)良好的(de)作(zuo)業環(huan)境，可(ke)采用總風(feng)扭通(tong)(tong)風(feng)、擴散通(tong)(tong)風(feng)、引射器和局(ju)扇通(tong)(tong)風(feng)等局(ju)部(bu)通(tong)(tong)風(feng)方法。
