局部(bu)通(tong)(tong)(tong)風(feng)(feng)(feng)是指掘進工作(zuo)面的(de)通(tong)(tong)(tong)風(feng)(feng)(feng)。在開(kai)采地下井巷(xiang)時，為了供給新(xin)鮮空氣(qi)、稀(xi)釋并排出掘進工作(zuo)面的(de)煙、塵和有(you)害氣(qi)體、創造良(liang)好的(de)作(zuo)業環境，可采用總風(feng)(feng)(feng)扭(niu)通(tong)(tong)(tong)風(feng)(feng)(feng)、擴散通(tong)(tong)(tong)風(feng)(feng)(feng)、引射(she)器和局扇通(tong)(tong)(tong)風(feng)(feng)(feng)等(deng)局部(bu)通(tong)(tong)(tong)風(feng)(feng)(feng)方法。
