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科技导报  2014 

基于LS-DYNA的间柱开采贫损爆破控制技术

DOI: 10.3981/j.issn.1000-7857.2014.h2.011, PP. 79-84

Keywords: 间柱采场,爆破控制,装药结构,边孔距,LS-DNYA,贫化和损失

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Abstract:

尽可能降低间柱采场开采的贫化和损失、充分回采间柱矿产资源,是某矿山当前亟待解决的问题。从控制间柱采场复杂边界的角度,运用显示动力分析软件LS-DYNA对间柱采场边排孔的装药结构、两帮和两端的边孔距进行数值优化,对比4种间隔装药结构方案边界处测点的x向振动速度方差,得到间隔比例为0.588最优装药结构方案产生的爆破振动最均匀;根据第四强度理论,得出最合理两帮和两端边孔距分别为1.6m和1.2m,此时对充填体和岩石造成的破坏最小。将研究成果应用于试验间柱采场,验证了间柱采场贫损爆破控制技术的有效性。

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