局部(bu)通(tong)(tong)風(feng)是指掘進(jin)工作面的(de)通(tong)(tong)風(feng)。在(zai)開(kai)采(cai)地下(xia)井巷時，為(wei)了供給(gei)新(xin)鮮空(kong)氣(qi)、稀釋(shi)并(bing)排出掘進(jin)工作面的(de)煙、塵(chen)和有害氣(qi)體、創造良(liang)好的(de)作業環(huan)境，可采(cai)用總風(feng)扭通(tong)(tong)風(feng)、擴散通(tong)(tong)風(feng)、引射(she)器和局扇通(tong)(tong)風(feng)等局部(bu)通(tong)(tong)風(feng)方法。
