局(ju)部(bu)通(tong)(tong)風(feng)是指掘進(jin)工作(zuo)面的通(tong)(tong)風(feng)。在開采(cai)地下井巷時，為了(le)供給(gei)新鮮空氣(qi)、稀釋并排(pai)出(chu)掘進(jin)工作(zuo)面的煙(yan)、塵和有害氣(qi)體、創造良好的作(zuo)業環境，可采(cai)用總風(feng)扭通(tong)(tong)風(feng)、擴散通(tong)(tong)風(feng)、引射器(qi)和局(ju)扇(shan)通(tong)(tong)風(feng)等局(ju)部(bu)通(tong)(tong)風(feng)方法。
