局部(bu)通(tong)(tong)風(feng)是指掘進(jin)工(gong)作(zuo)面(mian)的通(tong)(tong)風(feng)。在開采地下(xia)井巷時，為了供給新鮮空氣(qi)、稀(xi)釋并(bing)排(pai)出掘進(jin)工(gong)作(zuo)面(mian)的煙、塵(chen)和(he)有害氣(qi)體、創造良好的作(zuo)業環(huan)境，可采用總風(feng)扭通(tong)(tong)風(feng)、擴散通(tong)(tong)風(feng)、引射器(qi)和(he)局扇通(tong)(tong)風(feng)等局部(bu)通(tong)(tong)風(feng)方法。
