局部(bu)通(tong)風(feng)是指掘進工(gong)作面(mian)(mian)的(de)(de)通(tong)風(feng)。在(zai)開(kai)采(cai)地下井巷(xiang)時，為了供(gong)給新鮮(xian)空氣、稀釋(shi)并排出掘進工(gong)作面(mian)(mian)的(de)(de)煙、塵和有害氣體(ti)、創造良好的(de)(de)作業環(huan)境，可采(cai)用總風(feng)扭通(tong)風(feng)、擴散通(tong)風(feng)、引射器和局扇通(tong)風(feng)等局部(bu)通(tong)風(feng)方(fang)法(fa)。
