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近年来,我国有很多地下金属矿山采用新的高效率的采掘方法,迫切要求应用微差爆破技术,以实现远距离安全起爆,按精确的时间间隔顺序起爆,以提高爆破效果。但由于坑下存在杂散电流可能引起毫秒电雷管的早爆,从而限制了微差爆破技术的广泛应用。为此,急需研制能抗杂散电流的毫秒电雷管,以满足在不停电的条件下安全使用微差爆破技术的要求。1970年由抚顺矿务局十一厂、营口仪器二厂、梅山铁矿、马鞍山矿山研究院等单位共同协作,继续对抗杂散电流毫秒电雷管(以下简称抗杂雷管)进行研究与试验,并在弓长岭铁矿等矿山测定杂散电流的基础上,于1970年8月和
In recent years, many underground metal mines in our country adopt new high-efficiency mining methods. It is urgently required to apply the millisecond blasting technology in order to achieve long-range safe initiation and detonation at precise time intervals in order to improve the blasting effect. However, the existence of stray current under the pit may lead to the early explosion of millisecond electric detonator, thus limiting the widespread application of the microsecond blasting technology. Therefore, it is urgent to develop a millisecond electric detonator capable of resisting stray current in order to meet the requirement of safe use of a millisecond blasting technique under the condition of non-power failure. In 1970, Fushun Mining Bureau Eleven Factory, Yingkou Instrument Factory 2, Meishan Iron Mine and Maanshan Mining Research Institute jointly worked together to conduct research and experiment on stray current microsecond electric detonator (hereinafter referred to as anti-stray detonator) Based on the determination of stray currents in the mines such as Gongchangling iron ore mine, in August 1970