包钢乌海矿业公司卡布其矿爆区数值模拟及现场应用  

Numerical Simulation and Field Application in Blast Zone of Kabuki Mine of Baotou Steel Wuhai Mining Co.

作　　者：周兆巍 洪国敏 Zhou Zhaowei;Hong Guomin(Baotou Steel Group Mining Research Institute(Co.,Ltd.),Baotou 014010,Inner Mongolia Autonomous Region,China)

机构地区：[1]包钢集团矿山研究院(有限责任公司),内蒙古包头014010

出　　处：《包钢科技》2025年第2期5-9,共5页Science & Technology of Baotou Steel

摘　　要：乌海矿业公司卡布其矿在生产和销售中存在突出问题是原矿的粉矿率高,而目前粉矿的市场销售价格最低,难以覆盖成本。因此,对现场爆破技术进行改进,从而改善爆破质量,对于矿山降本增效具有重大意义。为了寻求改善爆破效果的新方法,依据不同爆破方案实现全爆区的爆破数值模拟,解决了以往单孔数值模拟的技术问题,且在不同爆破条件下产生的效果进行综合、全面、深入地分析,最终从设计、分析、数值模拟三方面相结合,从中优选爆破方案,提出科学合理的技术方案,节约爆破成本。通过研究爆破工艺对粉矿产生的影响因素,结合矿山现有爆破技术方案,设计提出径向不耦合装药逐孔起爆进行试验研究。基于GDEM爆破模拟软件对爆破方案进行爆区数值模拟,并对模拟效果进行粒度分析。研究表明:采用优化方案,粉矿率与大块率分别降低了9.45%、3.07%,合格块度提高12.52%,爆破效果得到明显改善。The prominent problem existed in the production and sales for Kabuki Mine of Wuhai Mining Co.is high rate of fine ore of raw ore,while the sale price of fine ore in market is the lowest so that costs are difficult to be covered.Therefore,it is of great significances for reducing costs and increasing benefits in mines to improve on-site blasting technology so as to improve blasting quality.In order to find new method to improve the blasting effect,numerical simulation of blasting in the zone of total explosion is realized based on different blasting schemes so that the technical problem of past single-hole numerical simulation is solved as well as the effects under different blasting conditions are with comprehensive and deep analysis.Finally,the scientific and reasonable technical scheme is proposed by optimizing blasting schemes combining with such three aspects as design,analysis and numerical simulation so that blasting costs are saved.The experimental study on hole-by-hole blasting with uncoupled charge in radial direction is designed and proposed through studying the influencing factors of blasting process on generation of fine ore and combining with existing technical plan of blasting for the mine.The numerical simulation of blasting scheme in blast zone is carried out based on the GDEM blasting simulation software and particle size is analyzed for simulation effects.The study showed that the rates of fine ore and block were decreased by 9.45%and 3.07%respectively,qualified lumpiness was increased by 12.52%and blasting effects were significantly improved with the optimization scheme.

关 键 词：爆区模拟 石灰石矿 粉矿 

分 类 号：P618.31[天文地球—矿床学]