局(ju)部通(tong)(tong)(tong)風(feng)(feng)是指掘進工(gong)作(zuo)面的(de)通(tong)(tong)(tong)風(feng)(feng)。在(zai)開采地下井巷時，為了供給新(xin)鮮空氣、稀釋并排出(chu)掘進工(gong)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，可采用總風(feng)(feng)扭(niu)通(tong)(tong)(tong)風(feng)(feng)、擴散通(tong)(tong)(tong)風(feng)(feng)、引射器(qi)和(he)局(ju)扇通(tong)(tong)(tong)風(feng)(feng)等局(ju)部通(tong)(tong)(tong)風(feng)(feng)方(fang)法。
