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很多研究地下杂散电流强度,分布特征的结果指出:杂散电流的产生,主要是由于动力运输线路、电缆电容、雷电流等所引起的。而这种电流的存在是造成地下电气爆破早爆事故的主要原因。国内外均发生过此类早爆事故。基于上述原因,加之磁铁矿山导电性较好,故我公司于1964年颁发的采矿技术规程规定:坑内磁铁矿山掌子面,禁止使用电气爆破。但生产的发展,要求尽快地解决此问题,以便在坑内采用毫秒、多层、分段的爆破方法,来适应采矿方法的需要,并为国家节省大量导爆线与棉纱。因此,从1964年起,对高频容抗电雷管作了室内试验与半工业性试
Many studies on the intensity and distribution characteristics of underground stray current show that the generation of stray current is mainly caused by power transmission lines, cable capacitance, lightning current and so on. The existence of this current is the main reason for the explosion of the underground electric blasting. Such early explosions have occurred both at home and abroad. For these reasons, coupled with magnetite magnet conductivity is better, so my company issued in 1964 mining technology regulations: pit magnetite mining face, prohibit the use of electrical blasting. However, the development of production requires that the issue be resolved as soon as possible in order to adopt millisecond, multi-layer and segmented blasting methods in the pit to meet the needs of the mining method and to save the country a large amount of guide wire and cotton yarn. Therefore, from 1964 onwards, high frequency capacitive reactance detonator made indoor and semi-industrial test