凿岩是硬质岩石采矿的关键所在 ,自引进大功率液压手持式凿岩机以来 ,与气动凿岩机相比 ,其掘岩率已得到明显增长 ,但是 ,因各种原因 ,在窄脉矿山中凿岩仍用气动手持式凿岩机 ,气动凿岩机能效低、掘岩率差、噪音和振动较大 ,而且对矿工的健康 (耳聋及并发症 )有不利影响。加拿 Rock drilling is the key to hard rock mining. Since the introduction of high-power hydraulic hand-held rock drills, rock drills have been significantly increased compared to pneumatic rock drills, however, for various reasons rock drilled Pneumatic hand-held rock drills are still used. Pneumatic rock drills have low energy efficiency, poor rock drilling rates, large noise and vibration, and adversely affect miners’ health (deafness and complications). Canada