局(ju)部通(tong)(tong)風(feng)(feng)是指掘進(jin)工(gong)(gong)作面的通(tong)(tong)風(feng)(feng)。在開采地下(xia)井巷(xiang)時，為(wei)了供給新鮮空氣、稀釋并(bing)排出掘進(jin)工(gong)(gong)作面的煙、塵和(he)有害氣體、創造(zao)良好的作業環(huan)境，可(ke)采用總風(feng)(feng)扭通(tong)(tong)風(feng)(feng)、擴散(san)通(tong)(tong)風(feng)(feng)、引射器和(he)局(ju)扇通(tong)(tong)風(feng)(feng)等局(ju)部通(tong)(tong)風(feng)(feng)方法。
