基于GDEM-BlockDyna的不同装药结构对爆堆形态影响研究  

Study on the Influence of Different Charge Structures on Morphology of Explosion Pile based on GDEM-BlockDyna

作　　者：张肯 于燕[2] 刘犇 张建华[1] 黄刚[1] 李江江 Eric Munene Kinyua ZHANG Ken;YU Yan;LIU Ben;ZHANG Jian-hua;HUANG Gang;LI Jiang-jiang;Eric Munene Kinyua(School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China;Huaxin Cement Co.,Ltd.,Wuhan 430073,China;Huaxin Cement(Chenzhou)Co.,Ltd.,Chenzhou 423022,China;Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉理工大学资源与环境工程学院,武汉430070 [2]华新水泥股份有限公司,武汉430073 [3]华新水泥(郴州)有限公司,郴州423022 [4]武汉科技大学,武汉430081

出　　处：《爆破》2024年第2期127-135,共9页Blasting

基　　金：国家自然科学基金面上项目(42271296)。

摘　　要：论文以某石灰石矿山为背景,针对矿山开采过程中存在的问题,以装药结构对爆堆形态分布的影响为主线,采用理论分析、GDEM-BlockDyna数值模拟及现场优化试验相结合的方法,展开了台阶爆破爆堆形态分布研究,分析了爆堆形态随装药结构的变化规律。爆堆松散度和抛掷距离会随着间隔段上部装药比例的增加先上升后下降,而爆堆高度总体呈下降趋势,但在空气间隔比例较大时会先减小后增加,爆堆坡面角会随着间隔段上部装药比例的增加而增加,但比例过高时则会下降。研究成果表明:爆堆形态随装药结构呈现出一定的变化规律,通过数值模拟方法,有效优化了装药结构,改善了现场爆堆形态,提升了矿山经济效益,可以为类似矿山生产提供指导。This study focuses on the impact of charge structure on the distribution of blast pile morphology in a limestone mine.A combination of theoretical analysis,GDEM-BlockDyna numerical simulation,and on-site optimization tests were conducted to investigate the morphological distribution of step blasting and blast reactors.The change in blast pile morphology with different charge structures was analyzed.The results indicate that the looseness and throwing distance of the blast pile initially increase and then decrease with an increase in the upper charge proportion of the interval section.The height of the explosion pile generally decreases but shows an initial decrease followed by an increase when there is a large air interval proportion.Additionally,the slope angle of the blast pile increases with an increase in charge proportion in the upper section of the interval section but decreases when this proportion becomes too large.These findings demonstrate that explosive pile patterns vary according to charge structure.Furthermore,through numerical simulation methods,effective optimization can be achieved for charge structure,leading to improved on-site explosion patterns and economic benefits for mining operations.

关 键 词：台阶爆破 数值模拟 装药结构 爆堆形态 

分 类 号：TD235.3[矿业工程—矿井建设]