局部(bu)通(tong)(tong)(tong)風(feng)是指掘進工作面的(de)通(tong)(tong)(tong)風(feng)。在(zai)開采地下井巷(xiang)時，為(wei)了(le)供給(gei)新(xin)鮮(xian)空氣(qi)、稀釋并(bing)排出掘進工作面的(de)煙、塵和(he)有害氣(qi)體、創(chuang)造良好的(de)作業環(huan)境，可(ke)采用總(zong)風(feng)扭通(tong)(tong)(tong)風(feng)、擴(kuo)散通(tong)(tong)(tong)風(feng)、引射器和(he)局扇通(tong)(tong)(tong)風(feng)等(deng)局部(bu)通(tong)(tong)(tong)風(feng)方法。
