局(ju)部通(tong)風是指掘(jue)進工(gong)(gong)作(zuo)面(mian)(mian)的通(tong)風。在開(kai)采(cai)地(di)下井巷時(shi)，為了(le)供給(gei)新鮮空氣(qi)、稀釋并(bing)排出掘(jue)進工(gong)(gong)作(zuo)面(mian)(mian)的煙、塵和有害氣(qi)體、創(chuang)造良好的作(zuo)業環境(jing)，可采(cai)用總(zong)風扭(niu)通(tong)風、擴散通(tong)風、引(yin)射器和局(ju)扇(shan)通(tong)風等局(ju)部通(tong)風方法(fa)。
