论文部分内容阅读
寿王坟铜矿使用大量崩矿的爆破方式已有多年历史,然而从近十余年的统计资料看,二次爆破炸药消耗量很高,一般约为0.8公斤/吨,超过一次单耗一倍以上,与国内类似矿山相比也约高一倍以上。其直接原因,主要是不合格大块产出率高,约达20～30％,严重影响了出矿效率的提高。为解决上述问题,我们根据对国内外矿山有关资料的分析和试验室爆破模拟试验的结果,确定采用扇形孔大密集系数爆破技术,并采用孔底装铝粉高威力炸药的措
Shouwangfen Copper Mine has used many methods of blasting for a long time. However, from the statistical data of the past ten years, the consumption of secondary explosives is very high, usually about 0.8 kg / ton, more than once per unit consumption Times more than similar mines in China and about doubled more. The direct cause is mainly the unqualified bulk output rate of about 20 to 30%, seriously affecting the efficiency of the ore out. In order to solve the above problems, based on the analysis of relevant domestic and foreign mines and the results of laboratory blasting simulation tests, we have determined that the large-dense-factor blasting technique using fan-shaped holes should be adopted and the measures