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采矿企业坚硬铁矿石大爆破落矿的生产经验表明,在备有深孔钻机、钻具、装药器、爆破器材、仪表和设备的凿岩爆破综合配套的现有开采方法中,改进爆破落矿指标的主要方向在于改善爆破破碎工艺过程。爆破工作是在矿石普氏系数为14～18、密度3.8～4吨/米~3的含铁角岩的矿山进行的。矿床用深孔落矿的有垂直补偿空间的连续阶段强制崩落法和向未充填矿房崩落房间矿柱及阶段矿柱的阶段矿房法开采。在不同矿床采矿技术条件下经过多年落矿实践表
Production experience of large iron ore blasting and demolition in mining enterprises shows that blasting has been improved in existing mining methods that are integrated with deep-hole drilling rigs, drilling tools, chargers, blasting equipment, instruments and equipment The main direction of ore falling index lies in improving blasting and crushing process. Blasting work is carried out in mines containing iron hornfels with a Platts Coefficient of 14-18 and a density of 3.8-4 ton / m3. In the deep-hole bedrock deposit, there is a vertical causative space with continuous caving caving method and the mining method at the stage of non-filling mineral caving chamber and stage ore column. In different mining technology conditions after many years of mining practice table