局部(bu)通(tong)(tong)風(feng)(feng)是指掘(jue)進(jin)工作面(mian)的(de)通(tong)(tong)風(feng)(feng)。在(zai)開采(cai)地下(xia)井巷時，為(wei)了供給新鮮(xian)空氣、稀釋并排出掘(jue)進(jin)工作面(mian)的(de)煙(yan)、塵(chen)和有害氣體、創造良好的(de)作業環境(jing)，可采(cai)用(yong)總風(feng)(feng)扭(niu)通(tong)(tong)風(feng)(feng)、擴散(san)通(tong)(tong)風(feng)(feng)、引射器和局扇通(tong)(tong)風(feng)(feng)等局部(bu)通(tong)(tong)風(feng)(feng)方法。
