局部(bu)通(tong)風(feng)(feng)是指掘(jue)進工(gong)作(zuo)面的通(tong)風(feng)(feng)。在(zai)開采地(di)下(xia)井(jing)巷時，為了供給(gei)新鮮(xian)空氣、稀釋并排(pai)出掘(jue)進工(gong)作(zuo)面的煙、塵和有害氣體、創造良好的作(zuo)業環境，可采用總風(feng)(feng)扭通(tong)風(feng)(feng)、擴散通(tong)風(feng)(feng)、引射器和局扇(shan)通(tong)風(feng)(feng)等局部(bu)通(tong)風(feng)(feng)方法。
