论文部分内容阅读
对于以凿岩爆破破碎矿岩的矿山,尤其是矿石硬度大、爆破性差的冶金矿山,爆破后在爆堆中产生一定数量的不合格大块是客观存在的.但是,大块过多、大块率过高(>2~5%),势必增加二次破碎工作量.一个中型规模的矿山,大块率为5%时,每天就得处理近百吨的大块,采用传统的二次凿岩爆破破碎大块工作量是十分繁重的.由于处理不合格大块占用了生产时间,恶化了作业环境,增加了辅助材料消耗,造成对设备的损坏,引起爆破伤亡事故等等,因此,
For the mines with the rock blasting broken ore, especially the metallurgical mines with large hardness and poor blasting ability, there is an objective existence of a certain number of unqualified chunks in the blasting after blasting.But the chunks are too large and large Block rate is too high (> 2 ~ 5%), is bound to increase secondary crushing workload.A medium-sized mines, the bulk rate of 5%, the day had to deal with nearly a hundred tons of large, using the traditional secondary Drilling blasting crushing bulk work load is very heavy.As handling unqualified chunk takes up the production time, worsens the working environment, increases the auxiliary material consumption, resulting in damage to the equipment, causing blasting casualties and so on, therefore,