局(ju)部通(tong)(tong)(tong)風(feng)(feng)是(shi)指(zhi)掘進工作(zuo)面的(de)(de)通(tong)(tong)(tong)風(feng)(feng)。在開采地下井巷時，為了供給(gei)新鮮空(kong)氣、稀(xi)釋(shi)并排出(chu)掘進工作(zuo)面的(de)(de)煙(yan)、塵和(he)(he)有害氣體(ti)、創造(zao)良(liang)好的(de)(de)作(zuo)業環境，可采用總風(feng)(feng)扭通(tong)(tong)(tong)風(feng)(feng)、擴(kuo)散通(tong)(tong)(tong)風(feng)(feng)、引(yin)射器和(he)(he)局(ju)扇通(tong)(tong)(tong)風(feng)(feng)等局(ju)部通(tong)(tong)(tong)風(feng)(feng)方法。
