局(ju)部(bu)通(tong)(tong)風(feng)(feng)(feng)是指掘(jue)進工(gong)作(zuo)面的(de)(de)通(tong)(tong)風(feng)(feng)(feng)。在開采地下井巷時，為了供給新(xin)鮮空氣(qi)、稀釋并排(pai)出(chu)掘(jue)進工(gong)作(zuo)面的(de)(de)煙、塵和(he)有害氣(qi)體、創造良好的(de)(de)作(zuo)業環境，可(ke)采用(yong)總風(feng)(feng)(feng)扭通(tong)(tong)風(feng)(feng)(feng)、擴散通(tong)(tong)風(feng)(feng)(feng)、引射器和(he)局(ju)扇通(tong)(tong)風(feng)(feng)(feng)等局(ju)部(bu)通(tong)(tong)風(feng)(feng)(feng)方法。
