局(ju)部通(tong)(tong)風(feng)(feng)(feng)(feng)是指掘(jue)進(jin)工(gong)作面(mian)的通(tong)(tong)風(feng)(feng)(feng)(feng)。在開(kai)采地下井巷(xiang)時(shi)，為了供給新鮮空氣(qi)、稀釋并排出掘(jue)進(jin)工(gong)作面(mian)的煙、塵(chen)和有害(hai)氣(qi)體、創(chuang)造良好的作業環境，可采用總風(feng)(feng)(feng)(feng)扭通(tong)(tong)風(feng)(feng)(feng)(feng)、擴散通(tong)(tong)風(feng)(feng)(feng)(feng)、引射器和局(ju)扇通(tong)(tong)風(feng)(feng)(feng)(feng)等(deng)局(ju)部通(tong)(tong)風(feng)(feng)(feng)(feng)方法。
