| T型坑道中爆炸冲击波传播规律的数值模拟 |
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| 引用本文： | 李秀地.T型坑道中爆炸冲击波传播规律的数值模拟[J].后勤工程学院学报,2011,27(4):8-12. |
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| 作者姓名： | 李秀地 |
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| 作者单位： | 后勤工程学院军事建筑工程系,重庆,401311 |
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| 基金项目： | 空军后勤部资助项目(KJYZ0504)本文得到后勤工程学院学术创新基金资助 |
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| 摘 要： | 为了确定地下坑道中防护门上的冲击波荷载,首先需要弄清爆炸冲击波在坑道中的传播衰减规律.在模型坑道爆炸实验数据验证的基础上,应用数值模拟方法研究了T型坑道中爆炸冲击波的传播衰减规律.通过大量不同模型尺寸、不同炸药药量的数值模拟,得到了T型坑道中平面冲击波的形成位置,提出了爆炸冲击波通过T型坑道拐弯时新的冲击波压力衰减系数...
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| 关 键 词： | T型坑道 冲击波 衰减系数 动力有限元 |
Numerical Simulation for Blast Propagation and Attenuation Inside T-shaped Tunnel from HE-charges Detonation |
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| LI Xiu-di.Numerical Simulation for Blast Propagation and Attenuation Inside T-shaped Tunnel from HE-charges Detonation[J].Journal of Logistical Engineering University,2011,27(4):8-12. |
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| Authors: | LI Xiu-di |
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| Institution: | LI Xiu-di(Dept.of Architecture & Civil Engineering,LEU,Chongqing 401311,China) |
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| Abstract: | In order to define the airblast loading on protective door of underground tunnel,the exact knowledge of the blast propagation and attenuation through tunnels is required to obtain firstly.Based on the experimental data verification of tunnel model,the process of blast propagation and attenuation through T-shaped tunnels is numerically simulated.By a great deal of simulation of the different sizes of tunnels and different mass HE-charges,the distribution of approximate uniform wave and a new blast pressure attenuation coefficient inside T-shaped tunnel are obtained.By comparison of pressure attenuation coefficients by different methods,the newly obtained coefficient can be utilized to describe the propagation and attenuation features of the blast of ordinary explosive.And the results offer valuable reference to tunnel engineering protection design. |
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| Keywords: | T-shaped tunnel airblast attenuation coefficient dynamic finite element |
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