KHYD140/155型礦(kuang)用(yong)(yong)隔(ge)爆電動變(bian)速(su)巖(yan)(yan)石鉆(zhan)(zhan)機（以下(xia)(xia)簡稱(cheng)巖(yan)(yan)石鉆(zhan)(zhan)機）系鉆(zhan)(zhan)巖(yan)(yan)石爆破孔的(de)(de)一種工(gong)具(ju)。適(shi)用(yong)(yong)于煤礦(kuang)井下(xia)(xia)巷道(dao)掘進(jin)、礦(kuang)山開采(cai)、水利(li)建設、道(dao)路修筑和石方工(gong)程的(de)(de)作業
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