| 坑道口部内爆炸冲击波传播速度规律的数值分析 |
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| 引用本文： | 徐大立,范进,高杰,任新见.坑道口部内爆炸冲击波传播速度规律的数值分析[J].工程爆破,2013(Z1):5-9. |
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| 作者姓名： | 徐大立 范进 高杰 任新见 |
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| 作者单位： | 南京理工大学土木工程系;总参工程兵科研三所 |
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| 摘 要： | 准确计算坑道口部内爆炸条件下冲击波传播速度的变化,是确定坑道内主动消波设备时间响应指标的关键。为此,基于AutoDyn进行5种不同工况的坑道内爆炸计算。采用量纲分析构建了冲击波传播速度的工程模型,通过对数值计算结果的拟合确定了模型的系数。与坑道化爆实验的实测值进行分析比较表明,所拟合的坑道内冲击波传播速度的经验模型最大误差为15%,作为一种工程方法而言具有较强适用性。
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| 关 键 词： | 坑道工程 内爆炸 冲击波 传播速度规律 工程经验模型 |
NUMERICAL SIMULATION ANALYSIS ON PROPAGATION VELOCITY LAW OF INTERNAL EXPLOSION BLAST WAVE AT THE TUNNEL ENTRANCE |
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| XU Da-li,FAN Jin,GAO Jie,REN Xin-jian.NUMERICAL SIMULATION ANALYSIS ON PROPAGATION VELOCITY LAW OF INTERNAL EXPLOSION BLAST WAVE AT THE TUNNEL ENTRANCE[J].Engineering Blasting,2013(Z1):5-9. |
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| Authors: | XU Da-li FAN Jin GAO Jie REN Xin-jian |
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| Affiliation: | 1.Civil Engineering Department,Nanjing University of Science and Technology, Nanjing 210094,China;2.The Third Engineer Scienti fic Research Institute of the Headquarters of the General Staf f,Luoyang 471023,Henan,China) |
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| Abstract: | The accurate calculation of shock wave propagation velocity changes caused by internal explosion at the tunnel entrance is critical for the time response index of wave absorption facilities in the tunnel.Therefore,five internal explosion calculations in different conditions have been conducted based on AutoDyn,and engineering experience model of shock wave propagation velocity has been constructed by using dimensional analysis and its coefficient has been determined through the fitting of numerical results.Compared with results of the tunnel chemical explosion experiment,the results showed that the maximum error being 15%,thus indicated that this model as an engineering method is quite applicable. |
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| Keywords: | Tunnel engineering Internal explosion Shock wave Propagation velocity law Engineering experience model |
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