挖改(gai)潛孔(kong)鉆機壓縮空(kong)氣(qi)為動力(li)的中(zhong)深孔(kong)鑿(zao)(zao)巖(yan)(yan)設備主要(yao)用(yong)(yong)于井下(xia)采(cai)(cai)礦場接桿(gan)鉆鑿(zao)(zao)上(shang)向扇(shan)型或環型中(zhong)深孔(kong)的石(shi)方工(gong)程(cheng)。適用(yong)(yong)于巷道斷面為2.5*2.5m到3m*3m鉆孔(kong)直徑50－80cm，有(you)效孔(kong)深30m。采(cai)(cai)用(yong)(yong)直徑65mm的十字型合金釬(han)頭在F12-14級礦巖(yan)(yan)中(zhong)，平(ping)均純鑿(zao)(zao)巖(yan)(yan)速度可達680mm/分。鉆架結構簡單(dan)。鑿(zao)(zao)巖(yan)(yan)機拆運方便，工(gong)作(zuo)安(an)全可靠，效率(lv)高。用(yong)(yong)于冶金礦。