挖改潛孔(kong)(kong)(kong)鉆機(ji)(ji)壓縮空氣為動力的中(zhong)深(shen)孔(kong)(kong)(kong)鑿巖設備主要(yao)用(yong)于井下采(cai)礦場接桿(gan)鉆鑿上(shang)向(xiang)扇型或環型中(zhong)深(shen)孔(kong)(kong)(kong)的石方(fang)工程。適用(yong)于巷道(dao)斷面(mian)為2.5*2.5m到3m*3m鉆孔(kong)(kong)(kong)直徑50－80cm，有(you)效孔(kong)(kong)(kong)深(shen)30m。采(cai)用(yong)直徑65mm的十字型合金釬頭在F12-14級礦巖中(zhong)，平均純鑿巖速度(du)可(ke)達680mm/分。鉆架結構簡(jian)單(dan)。鑿巖機(ji)(ji)拆(chai)運方(fang)便，工作安全可(ke)靠(kao)，效率高。用(yong)于冶金礦。