局部(bu)通(tong)(tong)風(feng)(feng)(feng)是指掘進(jin)工(gong)作(zuo)(zuo)面的通(tong)(tong)風(feng)(feng)(feng)。在開采地下井巷(xiang)時，為了供(gong)給新鮮(xian)空氣、稀釋(shi)并排出(chu)掘進(jin)工(gong)作(zuo)(zuo)面的煙、塵和(he)有害氣體、創造良好的作(zuo)(zuo)業環境，可(ke)采用總風(feng)(feng)(feng)扭通(tong)(tong)風(feng)(feng)(feng)、擴(kuo)散(san)通(tong)(tong)風(feng)(feng)(feng)、引射器和(he)局扇通(tong)(tong)風(feng)(feng)(feng)等局部(bu)通(tong)(tong)風(feng)(feng)(feng)方(fang)法。
