局部(bu)(bu)通(tong)(tong)風是指掘(jue)進工(gong)(gong)作面(mian)的(de)通(tong)(tong)風。在(zai)開采地下井(jing)巷時，為了(le)供給新鮮(xian)空氣(qi)、稀釋(shi)并排出掘(jue)進工(gong)(gong)作面(mian)的(de)煙、塵(chen)和(he)有(you)害(hai)氣(qi)體、創造良好的(de)作業環境，可采用(yong)總風扭通(tong)(tong)風、擴(kuo)散通(tong)(tong)風、引(yin)射(she)器和(he)局扇通(tong)(tong)風等局部(bu)(bu)通(tong)(tong)風方法。
