| 储氢长管拖车隧道燃爆事故演化机理研究 |
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| 引用本文： | 时婷婷, 汪侃, 张思琪等. 储氢长管拖车隧道燃爆事故演化机理研究. 力学与实践, 2022, 44(3): 526-534. doi: 10.6052/1000-0879-22-125 |
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| 作者姓名： | 时婷婷 汪侃 张思琪 褚樾炜 |
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| 作者单位： | *. 国家电投集团科学技术研究院有限公司, 北京 102209; †. 上海海事大学海洋科学与工程学院, 上海 201306; **. 国际商务区投资建设有限公司市政部, 浙江嘉兴 314001 |
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| 基金项目： | 国家自然科学基金（52001196）； |
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| 摘 要： | 储氢长管拖车在城市公路隧道运输时突发异常状况将导致氢气泄漏和燃爆事故，本文通过构建储氢长管拖车隧道事故模型，基于隧道内氢气泄漏浓度、冲击波和温度场等特性参数分析，阐明燃爆事故演化规律和毁伤机理。研究表明，泄漏氢气在隧道口呈竖向羽流扩散，而隧道内扩散时会在一定区域积聚。氢气燃爆处驻留车辆和设备构成边界约束条件，将增强爆炸冲击波的传播速度和峰值超压。此外，冲击波与火焰形成耦合效应，进而增强了破坏后果。
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| 关 键 词： | 长管拖车 氢气泄漏 冲击波 火焰传播 耦合效应 |
| 收稿时间： | 2022-03-01 |
| 修稿时间： | 2022-04-01 |
RESEARCH ON ACCIDENT EVOLUTION MECHANISM CAUSED BY HYDROGEN LONG-TUBE TRAILER EXPLOSION IN TUNNEL |
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| Shi Tingting, Wang Kan, Zhang Siqi, et al. Research on accident evolution mechanism caused by hydrogen long-tube trailer explosion in tunnel. Mechanics in Engineering, 2022, 44(3): 526-534. doi: 10.6052/1000-0879-22-125 |
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| Authors: | Tingting SHI Kan WANG Siqi ZHANG Yuewei CHU |
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| Affiliation: | *. Carbon Neutrality Research Center, State Power Investment Corporation Research Institute, Beijing 102209, China; †. College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China; **. Department of Municipal, International Business District Investment Construction Co., LTD, Jiaxing 314001, Zhejiang, China |
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| Abstract: | The emergency situation of hydrogen long-tube trailer occurs in a urban road tunnel is prone to cause hydrogen leakage and explosion accidents. In this study, a numerical model of hydrogen long-tube trailer accident in tunnel is developed based on the real scenario, and the mechanisms of accident evolution and damage effect are then elucidated through the collection and analysis of characteristic parameters (such as dispersion concentration, overpressure and temperature, etc.). The results show that the leaked hydrogen disperses in a vertical plume at the tunnel entrance and accumulates in a certain area when it disperses inside the tunnel, while its dispersion velocity is related to ventilation condition of tunnel. A coupling effect is generated between shock wave and flame induced by such hydrogen long-tube trailer explosion in tunnel, resulting in even larger damage to the tunnel. |
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| Keywords: | long-tube trailer hydrogen leakage shock wave flame propagation coupling effect |
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