复杂街区脏弹恐怖袭击下放射性物质扩散模拟

doi:10.16265/j.cnki.issn1003-3033.2018.09.023

中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (9): 134-141.doi: 10.16265/j.cnki.issn1003-3033.2018.09.023

复杂街区脏弹恐怖袭击下放射性物质扩散模拟

郑超慧¹, 吴建松^2,3 副教授, 胡啸峰^**1 讲师, 侯毅⁴, 侯苗苗¹, 邱凌峰¹

1 中国人民公安大学信息技术与网络安全学院,北京102623
2 中国矿业大学(北京) 资源与安全工程学院,北京 100083
3 安全防范技术与风险评估公安部重点实验室,北京 102623
4 公安部科技信息化局,北京 100741

收稿日期:2018-06-10 修回日期:2018-08-05 出版日期:2018-09-28 发布日期:2020-09-28
通讯作者: 胡啸峰(1986—),男,河北唐山人,博士,讲师,硕士生导师,主要从事警务信息技术的教学与研究工作。E-mail:huxiaofeng@ppsuc.edu.cn。
作者简介:郑超慧(1994—),男,浙江衢州人,硕士研究生,研究方向为计算机数值仿真模拟。E-mail:ppsuczch@126.com。
基金资助:
国家重点研发计划项目(2017YFC0805001);国家自然科学基金资助(71704183)。

Simulation of radionuclides dispersion under dirty bomb attack with complex street geometry

ZHENG Chaohui¹, WU Jiansong^2,3, HU Xiaofeng¹, HOU Yi⁴, HOU Miaomiao¹, QIU Lingfeng¹

1 School of Information Technology and Cyber Security, People's Public Security University of China, Beijing 102623, China
2 School of Resources & Safety Engineering , China University of Mining & Technology(Beijing), Beijing 100083, China
3 Key Laboratory of Security Technology & Risk Assessment, Ministry of Public Security, Beijing 102623, China
4 Bureau of Science and Technology Information, Ministry of Public Security of People's Republic of China, Beijing 100741,China

Received:2018-06-10 Revised:2018-08-05 Online:2018-09-28 Published:2020-09-28

摘要/Abstract

摘要： 为研究复杂街区“脏弹”恐怖袭击情景下的放射性物质扩散问题,以实体街区为例,基于欧拉模型,对街区内放射性物质扩散进行数值模拟,分析并总结复杂街区结构和不同风场条件下放射性物质的扩散特征。结果发现,同一风向下,当风速小于20 m/s时,风速越大,街区下风向出口处的辐射风险越高;当风速为10 m/s时,街区下风向各出口的总辐射风险最高,风速为6 m/s时风险最低。街区复杂结构对扩散的影响随风速的增大而增大;风速小于2 m/s时,近源处易形成大面积高浓度聚集,污染物整体呈高斯分布。研究表明:发生袭击时,应避免在下风向建筑物邻近区域或密集区域以及环形区域等位置停留,疏散时也应选择远离这些区域的出口。

关键词: 复杂街区, 脏弹, 恐怖袭击, 数值模拟, 欧拉模型, 应急

Abstract: This paper takes a real block as the study area, simulating the radionuclides dispersion under adirty bomb attack in this block based on the Euler numerical model. Then features of the radionuclides dispersion with complex street geometry and different wind field conditions are examined and concluded. Results show that the radiological risk grows up with the increase of wind speed when it is under 20 m/s with the same wind direction, that when wind speed is 10 m/s, the sum of the radiological risk reaches the maximum value at the exits downwind while it is minimum if the wind speed is 6 m/s, that higher wind speed witnesses more significant influence of the street complexity on the radionuclides dispersion, that the radionuclides near the source is easy to form a large high-concentrated area and present a Gaussian distribution if the wind speed is slower than 2 m/s, that in circumstance of dirty bomb attacking, staying in the downwind area near the buildings, as well as the areas with densely or open circular buildings should be avoided, and evacuating from the adjacent exits should also be forbidden.

Key words: complex street geometry, dirty bomb, terrorist attacks, numerical simulation, Euler model, emergency

中图分类号:

X928.9
TL7

郑超慧, 吴建松, 胡啸峰, 侯毅, 侯苗苗, 邱凌峰. 复杂街区脏弹恐怖袭击下放射性物质扩散模拟[J]. 中国安全科学学报, 2018, 28(9): 134-141.

ZHENG Chaohui, WU Jiansong, HU Xiaofeng, HOU Yi, HOU Miaomiao, QIU Lingfeng. Simulation of radionuclides dispersion under dirty bomb attack with complex street geometry[J]. China Safety Science Journal, 2018, 28(9): 134-141.

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复杂街区脏弹恐怖袭击下放射性物质扩散模拟

Simulation of radionuclides dispersion under dirty bomb attack with complex street geometry

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