挖改潛孔(kong)(kong)(kong)鉆機壓縮空氣(qi)為(wei)動力的中(zhong)深孔(kong)(kong)(kong)鑿(zao)(zao)(zao)巖(yan)設備主要用(yong)(yong)于(yu)井下采礦(kuang)場接桿鉆鑿(zao)(zao)(zao)上向(xiang)扇型或(huo)環(huan)型中(zhong)深孔(kong)(kong)(kong)的石方(fang)工程。適用(yong)(yong)于(yu)巷道(dao)斷(duan)面為(wei)2.5*2.5m到3m*3m鉆孔(kong)(kong)(kong)直徑(jing)50－80cm，有效孔(kong)(kong)(kong)深30m。采用(yong)(yong)直徑(jing)65mm的十字型合金(jin)釬頭在F12-14級礦(kuang)巖(yan)中(zhong)，平均純鑿(zao)(zao)(zao)巖(yan)速(su)度可(ke)達680mm/分(fen)。鉆架結構簡(jian)單。鑿(zao)(zao)(zao)巖(yan)機拆運(yun)方(fang)便，工作安全可(ke)靠，效率高(gao)。用(yong)(yong)于(yu)冶(ye)金(jin)礦(kuang)。