| 炮孔堵塞对爆破效果影响研究 |
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| 引用本文： | 张袁娟,韩红强,黄金香,李梅.炮孔堵塞对爆破效果影响研究[J].煤炭技术,2014(5):101-103. |
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| 作者姓名： | 张袁娟 韩红强 黄金香 李梅 |
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| 作者单位： | 河南工程学院煤矿灾害预防控制实验室河南省高校重点实验室培育基地;河南工程学院安全工程学院;北京理工大学机电学院;武汉理工大学资源与环境工程学院 |
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| 基金项目： | 河南工程学院博士基金(D2013022);河南省教育厅科学技术研究重点项目(14B440005);国家自然科学基金(51104111);中央高校基本科研业务费用专项资金资助(2012-IV-098) |
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| 摘 要： | 为了研究堵塞对爆破效果的影响,运用大型显示非线性动力分析软件LS-DYNA建立有限元模型,分别对堵塞长度4.5 m和无堵塞2种露天矿台阶爆破进行数值模拟,从峰值振速角度进行分析,得出距离爆源越近,堵塞对爆破效果影响越明显,峰值振速相差比例最高可达73%。
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| 关 键 词： | 炮孔堵塞 峰值振速 LS-DYNA 数值模拟 台阶爆破 |
Study on Influence of Blast-hole Stemming to Blasting Effect |
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| ZHANG Yuan-juan;HAN Hong-qiang;HUANG Jin-xiang;LI Mei.Study on Influence of Blast-hole Stemming to Blasting Effect[J].Coal Technology,2014(5):101-103. |
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| Authors: | ZHANG Yuan-juan;HAN Hong-qiang;HUANG Jin-xiang;LI Mei |
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| Affiliation: | ZHANG Yuan-juan;HAN Hong-qiang;HUANG Jin-xiang;LI Mei;Henan Province Universities Key Laboratory Breeding Base of Coal Mine Disaster Prevention and Control Laboratory,Henan Institute of Engineering;School of Safety Engineering,Henan Institute of Engineering;School of Mechano-electronics Engineering,Beijing Institute of Technology;School of Resource and Environment Engineering, Wuhan University of Technology; |
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| Abstract: | To research the blasting effect affected by the blast-hole stemming, program LS-DYNA was used to do numerical simulation on the two different blasting conditions in open-pit mine, with stemming length of 4.5m and without stemming length. the peak particle velocity(PPV) of these two conditions from the simulation results was analyzed comparatively. It is concluded that the closer to the explosion source, the more obviously blast-hole stemming affect blasting effect, and that difference proportion of PPV was up to 73%. |
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| Keywords: | blast-hole stemming peak particle velocity(PPV) LS-DYNA numerical simulation bench blasting |
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