挖改潛孔(kong)鉆機壓縮空氣為動力的(de)中(zhong)深孔(kong)鑿(zao)(zao)(zao)巖(yan)設備主(zhu)要用于井下采礦(kuang)場(chang)接桿鉆鑿(zao)(zao)(zao)上向扇(shan)型(xing)或環型(xing)中(zhong)深孔(kong)的(de)石方工(gong)(gong)程。適用于巷道(dao)斷面為2.5*2.5m到3m*3m鉆孔(kong)直(zhi)徑(jing)50－80cm，有效(xiao)孔(kong)深30m。采用直(zhi)徑(jing)65mm的(de)十字型(xing)合金(jin)釬頭在(zai)F12-14級礦(kuang)巖(yan)中(zhong)，平(ping)均(jun)純鑿(zao)(zao)(zao)巖(yan)速(su)度可達680mm/分。鉆架結構(gou)簡單。鑿(zao)(zao)(zao)巖(yan)機拆運(yun)方便，工(gong)(gong)作(zuo)安(an)全可靠，效(xiao)率高。用于冶金(jin)礦(kuang)。