| In-Tunnel Blast Pressure Empirical Formulas for Detonations External, Internal and at the Tunnel Entrance |
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| 作者姓名： | LI Xiudi ZHENG Yingren |
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| 作者单位： | Department and Architecture and Civil Engineering, Logistical Engineering University, Chongqing 400041, China |
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| 摘 要： |
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| 关 键 词： | 爆破机理 经验式 比例测试 空中爆炸 地下隧道 |
| 收稿时间： | 2006-06-02 |
In-Tunnel Blast Pressure Empirical Formulas for Detonations External, Internal and at the Tunnel Entrance |
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| LI Xiudi ZHENG Yingren.In-Tunnel Blast Pressure Empirical Formulas for Detonations External, Internal and at the Tunnel Entrance[J].Transactions of Tianjin University,2006,12(B09):177-181. |
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| Abstract: | In order to define the loading on protective doors of an underground tunnel, the exact knowledge of the blast propagation through tunnels is needed. Thirty-three scale high-explosive tests are conducted to obtain in-tunnel blast pressure for detonations external, internal and at the tunnel entrance. The cross section of the concrete model tunnel is 0.67 m^2. Explosive charges of TNT, ranging in mass from 400 g to 4 600 g, are detonated at various positions along the central axis of the model tunnel. Blast gages are flush-installed in the interior surface of the tunnel to record side-on blast pressure as it propagates down the tunnel. The engineering empirical formulas for predicting blast peak pressure are evaluated, and are found to be reasonably accurate for in-tunnel pressure prediction. |
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| Keywords: | mechanics of explosion empirical formulas scale tests airblast |
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