局(ju)部通(tong)(tong)風(feng)(feng)是(shi)指(zhi)掘進(jin)工作面(mian)的通(tong)(tong)風(feng)(feng)。在開采地下井巷時，為了供(gong)給新(xin)鮮空氣(qi)、稀釋并(bing)排出掘進(jin)工作面(mian)的煙、塵和(he)有害氣(qi)體、創造良好的作業環境(jing)，可采用總風(feng)(feng)扭通(tong)(tong)風(feng)(feng)、擴(kuo)散通(tong)(tong)風(feng)(feng)、引射(she)器和(he)局(ju)扇通(tong)(tong)風(feng)(feng)等局(ju)部通(tong)(tong)風(feng)(feng)方法(fa)。
