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自1979年10月以来,我矿在井下中深孔采矿大爆破中,已全面推广使用新型的起爆器材——塑料管非电起爆系统。到目前为止,先后进行了十多次爆破,均取得了十分满意的效果。其中,有详细记录的爆破炮孔1364个,炸药量44.3吨,崩落矿石13.55万吨,最大规模的一次是爆破深孔357个,使用组合雷管746发,炸药量15.4吨,崩落矿石5.6万吨。所用的系统是华东工程学院生产的塑料导爆管配备抚顺十一厂的雷管的组合件,导爆管的爆速为2000米/秒,雷管的微差间隔为6段。我们所采取的装药结构如图1所示。
Since October 1979, our mine has fully promoted the use of a new type of detonation equipment - plastic pipe non-electric detonation system during the blasting of deep-hole mining in underground wells. So far, it has conducted more than ten times of blasting and achieved very satisfactory results. Among them, a detailed record of blasting blasthole 1364, blasting amount of 44.3 tons, 135,500 tons of ore avalanche, the largest one is blasting deep hole 357, the use of a combination of 746 tubes, explosives amount 15.4 tons, 56,000 tons of ore . The system used was a combination of detonators equipped with plastic detonators from East China Institute of Technology equipped with Fushun eleven plants. The detonating tubes detonated at a speed of 2000 m / s with a detonator spacing of 6 segments. The charge structure we have taken is shown in Figure 1.