局(ju)部(bu)通(tong)(tong)(tong)風(feng)(feng)(feng)是(shi)指(zhi)掘(jue)進工(gong)作面(mian)的通(tong)(tong)(tong)風(feng)(feng)(feng)。在開采地(di)下井巷時，為了供(gong)給新鮮空氣、稀釋并排(pai)出掘(jue)進工(gong)作面(mian)的煙、塵(chen)和有害氣體、創造良好的作業環境，可采用總風(feng)(feng)(feng)扭通(tong)(tong)(tong)風(feng)(feng)(feng)、擴散通(tong)(tong)(tong)風(feng)(feng)(feng)、引射器和局(ju)扇通(tong)(tong)(tong)風(feng)(feng)(feng)等局(ju)部(bu)通(tong)(tong)(tong)風(feng)(feng)(feng)方法。
