局(ju)部(bu)(bu)通(tong)(tong)(tong)風(feng)(feng)(feng)是指(zhi)掘進(jin)工作面的(de)通(tong)(tong)(tong)風(feng)(feng)(feng)。在開(kai)采地下井巷時，為了供給新鮮(xian)空氣、稀釋并排出掘進(jin)工作面的(de)煙、塵和有害氣體、創(chuang)造良好的(de)作業環境，可(ke)采用總風(feng)(feng)(feng)扭通(tong)(tong)(tong)風(feng)(feng)(feng)、擴散(san)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)(bu)通(tong)(tong)(tong)風(feng)(feng)(feng)方法(fa)。
