局部通(tong)(tong)風是指掘進工作(zuo)面(mian)的通(tong)(tong)風。在開采地下井巷(xiang)時，為了(le)供給新鮮(xian)空氣(qi)、稀(xi)釋并排出(chu)掘進工作(zuo)面(mian)的煙(yan)、塵和有害氣(qi)體、創造良好的作(zuo)業(ye)環(huan)境，可采用總風扭(niu)通(tong)(tong)風、擴散通(tong)(tong)風、引射器和局扇(shan)通(tong)(tong)風等局部通(tong)(tong)風方法。
