局部通(tong)(tong)風(feng)(feng)是指(zhi)掘(jue)進(jin)工(gong)作面的(de)通(tong)(tong)風(feng)(feng)。在開采地下(xia)井巷時(shi)，為了供給新鮮(xian)空氣、稀釋(shi)并排出掘(jue)進(jin)工(gong)作面的(de)煙(yan)、塵和(he)有(you)害氣體、創造良(liang)好的(de)作業環境(jing)，可采用總風(feng)(feng)扭通(tong)(tong)風(feng)(feng)、擴散通(tong)(tong)風(feng)(feng)、引(yin)射器和(he)局扇通(tong)(tong)風(feng)(feng)等局部通(tong)(tong)風(feng)(feng)方法。
