局(ju)部通(tong)(tong)(tong)(tong)風(feng)(feng)是(shi)指(zhi)掘(jue)進工作(zuo)面的(de)通(tong)(tong)(tong)(tong)風(feng)(feng)。在開采地下井巷時，為了供給新鮮空氣、稀釋并(bing)排出(chu)掘(jue)進工作(zuo)面的(de)煙、塵和(he)有害氣體(ti)、創造良好的(de)作(zuo)業環境，可采用(yong)總風(feng)(feng)扭通(tong)(tong)(tong)(tong)風(feng)(feng)、擴散(san)通(tong)(tong)(tong)(tong)風(feng)(feng)、引(yin)射器和(he)局(ju)扇通(tong)(tong)(tong)(tong)風(feng)(feng)等局(ju)部通(tong)(tong)(tong)(tong)風(feng)(feng)方法。
