基于提高混装乳化炸药爆炸效能利用的创新爆破技术

Innovative Blasting Technology Based on Improving Explosive Efficiency Utilization of Mixed Emulsion Explosive

结合BCR(D)H-15型和BCRH-15E型现场混装车在露天铁矿的使用,通过优化爆破参数、改善装药结构、调整炸药配比,从本质上提高了混装乳化炸药爆炸效能的利用。在高村铁矿应用结果表明:按照混装乳化炸药1000 t/a使用量计算,扩大孔网参数后减少钻孔量10%~12%,节约钻孔费用26万元/a,节省爆破炸药成本约89万元/a;大块率平均降低约2.0%,减少大块破碎成本约88万元/a;混装乳化炸药的单耗下降到0.50~0.55 kg/m^(3),延米爆破量提高10%~15%,节约炸药81万元/a;调整炸药配比后,提高了炸药的爆速和做功能力,爆破效果明显改善,爆破成本有效降低。

Combined with the application of BCR(D)H-15 and BCRH-15E field mixed loading ve⁃hicles in open-pit iron mines,the utilization of mixed loading emulsion explosive's explosive efficiency is improved essentially by optimizing blasting parameters,improving charging structure and adjusting explo⁃sive ratio.The application results in Gaocun Iron Mine show that,according to the usage of 1000 t/a mixed emulsion explosive,the drilling volume can be reduced by 10%~12%after the hole network parameters are expanded,which saves 260000 yuan/a of drilling cost and 890000 yuan/a of blasting explosive cost.The average lump rate is reduced by about 2.0%,and the cost of lump crushing is reduced by about 880000 yu⁃an/a.The unit consumption of mixed emulsion explosive is reduced to 0.50~0.55 kg/m^(3),the linear meter blasting volume is increased by 10%~15%,and the explosive is saved by 810000 yuan/a.After adjusting the proportion of explosives,the blasting speed and work capacity of explosives are increased,the blasting effect is significantly improved,and the blasting cost is effectively reduced.