凿岩爆破仍是地下金属矿山破碎岩石所用的主要方法。目前,日益增多地采用液压冲击式凿岩机凿岩。本文介绍一些实例和取得的成效。最近几年来,在发展机械化挖掘设备方面虽已取得了很大进展,但凿岩爆破仍是地下矿山开采金属矿石和工业矿物所用的主要方法。目前,用液压凿岩机钻凿的炮孔日益增 Rock blasting is still the main method used to crush rocks in underground metal mines. At present, the hydraulic impact rock drilling machine is increasingly used. This article describes some examples and the results achieved. In recent years, great progress has been made in the development of mechanized excavation equipment, but drilling and blasting is still the main method used by underground mines for the production of metal ores and industrial minerals. At present, the hole drilled by a hydraulic rock drill is increasing