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大幅度提高露天矿产量的技术关键在于能否高速度打出炮孔,提高爆破质量,提供合乎要求的矿岩量,提高电铲效率和作业率。七八年我们在穿爆方面。废除老式的磕头钻,采用了国产73～200型潜孔钻,实行大爆区多排孔微差爆破,增加一次爆破量。改进爆破参数,缩小孔距,增大药量,使孔底部过粉碎。
The key to increase the output of open-pit mines is to find out whether blasting holes can be blasted at high speed, improve the quality of blasting, provide the required amount of ore and improve the efficiency and work rate of electric shovels. In seventy-eight we wear the blast side. Abolition of the old kowtow drill, using a domestic 73 ~ 200 DTH drill, the implementation of multi-row hole blasting a small difference blasting to increase the amount of a blasting. Improve the blasting parameters, reduce the hole distance, increase the dose, so that the bottom of the hole is too crushed.