局(ju)部通(tong)(tong)(tong)風(feng)(feng)(feng)是指掘進工(gong)作(zuo)面的通(tong)(tong)(tong)風(feng)(feng)(feng)。在(zai)開采(cai)(cai)地下(xia)井巷時(shi)，為了供給新鮮(xian)空(kong)氣、稀釋并排出掘進工(gong)作(zuo)面的煙、塵和有害氣體(ti)、創造良好的作(zuo)業(ye)環(huan)境，可(ke)采(cai)(cai)用總風(feng)(feng)(feng)扭通(tong)(tong)(tong)風(feng)(feng)(feng)、擴散通(tong)(tong)(tong)風(feng)(feng)(feng)、引射器和局(ju)扇通(tong)(tong)(tong)風(feng)(feng)(feng)等局(ju)部通(tong)(tong)(tong)風(feng)(feng)(feng)方法。
