局(ju)部(bu)通(tong)(tong)風(feng)(feng)(feng)是指掘(jue)進工作(zuo)面的通(tong)(tong)風(feng)(feng)(feng)。在(zai)開(kai)采地下井巷時(shi)，為了供給新鮮空(kong)氣(qi)、稀釋并排出掘(jue)進工作(zuo)面的煙(yan)、塵(chen)和(he)有(you)害氣(qi)體、創造良好的作(zuo)業環(huan)境，可采用總風(feng)(feng)(feng)扭通(tong)(tong)風(feng)(feng)(feng)、擴散通(tong)(tong)風(feng)(feng)(feng)、引射器(qi)和(he)局(ju)扇通(tong)(tong)風(feng)(feng)(feng)等局(ju)部(bu)通(tong)(tong)風(feng)(feng)(feng)方法。
