局(ju)部通(tong)(tong)(tong)風(feng)(feng)是指(zhi)掘進(jin)工作(zuo)面(mian)的通(tong)(tong)(tong)風(feng)(feng)。在開(kai)采地下井巷時，為了供給新(xin)鮮空氣(qi)、稀釋并排(pai)出掘進(jin)工作(zuo)面(mian)的煙、塵(chen)和有害氣(qi)體(ti)、創(chuang)造良好的作(zuo)業環境(jing)，可采用總風(feng)(feng)扭通(tong)(tong)(tong)風(feng)(feng)、擴散通(tong)(tong)(tong)風(feng)(feng)、引射器和局(ju)扇通(tong)(tong)(tong)風(feng)(feng)等局(ju)部通(tong)(tong)(tong)風(feng)(feng)方法(fa)。
