局部通(tong)(tong)風(feng)是(shi)指掘(jue)進工(gong)作面的(de)(de)通(tong)(tong)風(feng)。在開采地下井巷時，為(wei)了供(gong)給新鮮空氣(qi)(qi)、稀釋并排出掘(jue)進工(gong)作面的(de)(de)煙、塵和(he)有害氣(qi)(qi)體、創(chuang)造良好的(de)(de)作業環境，可(ke)采用總風(feng)扭通(tong)(tong)風(feng)、擴散通(tong)(tong)風(feng)、引射器和(he)局扇通(tong)(tong)風(feng)等(deng)局部通(tong)(tong)風(feng)方法。
