局部通(tong)(tong)風(feng)(feng)是指掘進工作面的通(tong)(tong)風(feng)(feng)。在開采地下井巷時，為(wei)了供(gong)給新鮮空氣(qi)、稀釋并排出掘進工作面的煙(yan)、塵和有(you)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)、引射器和局扇通(tong)(tong)風(feng)(feng)等局部通(tong)(tong)風(feng)(feng)方法。
