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苏联一些矿山在大量崩矿工作中,广泛地采用了平行密集深孔药包,药包的爆破,向切割槽和挤压介质一次同时进行。从而使大块产出率减少67～75％;阵面空气冲击波的压力强度降低67％;同时还提高了放
Some mines in the Soviet Union in a large number of collapsing work, the widespread use of parallel intensive deep-hole kits, kits blasting to the cutting groove and squeeze the media at the same time. Resulting in a 67-75% reduction in bulk yield; a 67% reduction in the pressure intensity of the air blast over the front;