局(ju)部(bu)通(tong)(tong)(tong)風(feng)(feng)(feng)是指掘進工作面的通(tong)(tong)(tong)風(feng)(feng)(feng)。在開采地下(xia)井巷(xiang)時，為了供給新(xin)鮮空氣、稀釋并排(pai)出(chu)掘進工作面的煙、塵(chen)和有害氣體、創造良好的作業環境，可(ke)采用總風(feng)(feng)(feng)扭通(tong)(tong)(tong)風(feng)(feng)(feng)、擴散通(tong)(tong)(tong)風(feng)(feng)(feng)、引射器和局(ju)扇通(tong)(tong)(tong)風(feng)(feng)(feng)等局(ju)部(bu)通(tong)(tong)(tong)風(feng)(feng)(feng)方法。
