局部通(tong)(tong)風(feng)(feng)(feng)是指掘進工(gong)作面(mian)的通(tong)(tong)風(feng)(feng)(feng)。在開采(cai)地下井(jing)巷時，為了供給新鮮(xian)空氣(qi)、稀(xi)釋并排(pai)出掘進工(gong)作面(mian)的煙、塵和(he)有害氣(qi)體(ti)、創(chuang)造(zao)良(liang)好的作業環境，可(ke)采(cai)用總風(feng)(feng)(feng)扭(niu)通(tong)(tong)風(feng)(feng)(feng)、擴散通(tong)(tong)風(feng)(feng)(feng)、引射(she)器和(he)局扇通(tong)(tong)風(feng)(feng)(feng)等(deng)局部通(tong)(tong)風(feng)(feng)(feng)方(fang)法。
