挖改潛孔(kong)(kong)(kong)鉆(zhan)(zhan)機壓(ya)縮空氣為動力的(de)(de)中(zhong)(zhong)深孔(kong)(kong)(kong)鑿巖(yan)(yan)設(she)備(bei)主要(yao)用(yong)(yong)于(yu)井下采礦場(chang)接(jie)桿鉆(zhan)(zhan)鑿上向(xiang)扇型(xing)或環型(xing)中(zhong)(zhong)深孔(kong)(kong)(kong)的(de)(de)石方(fang)工(gong)(gong)程。適用(yong)(yong)于(yu)巷道斷面(mian)為2.5*2.5m到3m*3m鉆(zhan)(zhan)孔(kong)(kong)(kong)直徑50－80cm，有(you)效孔(kong)(kong)(kong)深30m。采用(yong)(yong)直徑65mm的(de)(de)十字(zi)型(xing)合金釬頭(tou)在F12-14級礦巖(yan)(yan)中(zhong)(zhong)，平(ping)均(jun)純鑿巖(yan)(yan)速(su)度可達680mm/分。鉆(zhan)(zhan)架結構(gou)簡(jian)單。鑿巖(yan)(yan)機拆運方(fang)便，工(gong)(gong)作安全可靠，效率高。用(yong)(yong)于(yu)冶金礦。