局部通(tong)風(feng)(feng)(feng)(feng)是指掘(jue)(jue)進(jin)工作(zuo)面的通(tong)風(feng)(feng)(feng)(feng)。在(zai)開(kai)采(cai)地(di)下(xia)井巷時，為了供(gong)給新鮮空氣、稀(xi)釋并(bing)排(pai)出掘(jue)(jue)進(jin)工作(zuo)面的煙(yan)、塵和(he)有害氣體、創(chuang)造良好(hao)的作(zuo)業(ye)環境(jing)，可(ke)采(cai)用總風(feng)(feng)(feng)(feng)扭通(tong)風(feng)(feng)(feng)(feng)、擴散通(tong)風(feng)(feng)(feng)(feng)、引(yin)射器(qi)和(he)局扇通(tong)風(feng)(feng)(feng)(feng)等(deng)局部通(tong)風(feng)(feng)(feng)(feng)方法(fa)。
