局(ju)部通(tong)風(feng)(feng)(feng)是指(zhi)掘進工(gong)作(zuo)面(mian)的通(tong)風(feng)(feng)(feng)。在開采地下井巷時，為了供(gong)給新(xin)鮮空(kong)氣、稀釋并排出掘進工(gong)作(zuo)面(mian)的煙(yan)、塵和(he)有害氣體(ti)、創造良好的作(zuo)業(ye)環(huan)境，可采用總風(feng)(feng)(feng)扭通(tong)風(feng)(feng)(feng)、擴散通(tong)風(feng)(feng)(feng)、引射器和(he)局(ju)扇通(tong)風(feng)(feng)(feng)等局(ju)部通(tong)風(feng)(feng)(feng)方法。
