局(ju)部(bu)通(tong)(tong)風(feng)(feng)(feng)是指掘進(jin)(jin)工作(zuo)面的通(tong)(tong)風(feng)(feng)(feng)。在開采地下(xia)井巷(xiang)時，為了供(gong)給(gei)新鮮空氣(qi)、稀釋并(bing)排出掘進(jin)(jin)工作(zuo)面的煙、塵和有害氣(qi)體(ti)、創造良好的作(zuo)業環境，可(ke)采用總風(feng)(feng)(feng)扭通(tong)(tong)風(feng)(feng)(feng)、擴散通(tong)(tong)風(feng)(feng)(feng)、引射器和局(ju)扇通(tong)(tong)風(feng)(feng)(feng)等局(ju)部(bu)通(tong)(tong)風(feng)(feng)(feng)方法。
