局部(bu)通(tong)(tong)(tong)風(feng)是指掘進工作面的通(tong)(tong)(tong)風(feng)。在開采(cai)地下井巷時，為了(le)供(gong)給新(xin)鮮空(kong)氣(qi)、稀釋并排出掘進工作面的煙、塵和(he)有害氣(qi)體、創造良好的作業環境，可(ke)采(cai)用總(zong)風(feng)扭通(tong)(tong)(tong)風(feng)、擴散通(tong)(tong)(tong)風(feng)、引射器和(he)局扇通(tong)(tong)(tong)風(feng)等局部(bu)通(tong)(tong)(tong)風(feng)方法。
