局部通(tong)風(feng)(feng)是指掘(jue)進(jin)(jin)工(gong)作面的通(tong)風(feng)(feng)。在開(kai)采(cai)地下井巷時，為了供(gong)給新鮮空氣(qi)、稀(xi)釋并排出(chu)掘(jue)進(jin)(jin)工(gong)作面的煙、塵和有害(hai)氣(qi)體、創(chuang)造良好的作業環境，可(ke)采(cai)用總風(feng)(feng)扭通(tong)風(feng)(feng)、擴散通(tong)風(feng)(feng)、引(yin)射器和局扇通(tong)風(feng)(feng)等局部通(tong)風(feng)(feng)方法。
