局部通(tong)(tong)風是指(zhi)掘(jue)進工(gong)作面的通(tong)(tong)風。在(zai)開采(cai)地下井巷(xiang)時，為(wei)了供(gong)給新鮮空氣(qi)、稀釋并(bing)排(pai)出掘(jue)進工(gong)作面的煙、塵和有害(hai)氣(qi)體(ti)、創造良好的作業環境，可采(cai)用總(zong)風扭通(tong)(tong)風、擴(kuo)散(san)通(tong)(tong)風、引射器和局扇通(tong)(tong)風等(deng)局部通(tong)(tong)風方(fang)法。
