局(ju)部通(tong)(tong)(tong)(tong)風是指掘進工(gong)作(zuo)面的(de)通(tong)(tong)(tong)(tong)風。在開采(cai)地下井巷時(shi)，為(wei)了(le)供給新(xin)鮮(xian)空氣、稀釋并排出掘進工(gong)作(zuo)面的(de)煙、塵和有害氣體、創(chuang)造良好的(de)作(zuo)業環境(jing)，可(ke)采(cai)用(yong)總風扭通(tong)(tong)(tong)(tong)風、擴(kuo)散通(tong)(tong)(tong)(tong)風、引(yin)射(she)器和局(ju)扇通(tong)(tong)(tong)(tong)風等局(ju)部通(tong)(tong)(tong)(tong)風方(fang)法。
