局部通(tong)風(feng)(feng)是指(zhi)掘進工(gong)作(zuo)(zuo)面的通(tong)風(feng)(feng)。在開采(cai)地下井巷時，為了(le)供給新鮮空(kong)氣、稀釋并排出掘進工(gong)作(zuo)(zuo)面的煙、塵和有(you)害氣體、創(chuang)造良好(hao)的作(zuo)(zuo)業環境，可(ke)采(cai)用總風(feng)(feng)扭通(tong)風(feng)(feng)、擴(kuo)散(san)通(tong)風(feng)(feng)、引射器和局扇(shan)通(tong)風(feng)(feng)等局部通(tong)風(feng)(feng)方法。
