Study on fire spread behavior of surrounding buildings caused by urban extreme explosion accidents

doi:10.16265/j.cnki.issn1003-3033.2022.10.2033

Abstract

Abstract:

In order to reduce the secondary disasters of surrounding buildings caused by extreme fire and explosion accidents in the city， taking the explosion accident of liquefied petroleum gas storage and transportation device in cities as an example， a simplified explosion model of liquefied petroleum gas storage and transportation device and a radiation ignition model of combustible materials in buildings were established， and an analysis method of fire spread behavior of surrounding buildings caused by urban extreme explosion accidents was put forward. The results show that the urban extreme explosion accident can cause the fire spreading behavior of surrounding buildings， and the thermal radiation generated by the explosion accident will first ignite the flammable materials at the openings of buildings. Subsequently， combustible materials will ignite other combustible materials in the building， and the fire will develop in the trend of t² fire. When the whole building was over-fired， the fire continued to burn and remained stable. On the whole， the danger arrival time of each floor in the building is relatively close， and the temperature is the main factor affecting the danger arrival time.

Key words: explosion accident, surrounding buildings, fire spreading behavior, numerical simulation, radiation ignition model, dangerous arrival time

ZHANG Guowei, LIU Chunyuan, ZHANG Zhiwei, ZHANG Xianghua, YUAN Diping. Study on fire spread behavior of surrounding buildings caused by urban extreme explosion accidents[J]. China Safety Science Journal, 2022, 32(10): 171-177.

Figures/Tables 8

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References 15

[1]	赵长勇. 储罐区火灾爆炸引发多米诺效应的风险分析[J]. 消防科学与技术, 2014, 33(12):1453-1456.
	ZHAO Changyong. Risk analysis of domino effect caused by fire and explosion in tank area[J]. Fire Science and Technology, 2014, 33(12):1453-1456.
[2]	王涛, 王平平. 城市人口密集区加油站池火灾热辐射后果的模拟研究[J]. 安全与环境工程, 2018, 25(4):150-155.
	WANG Tao, WANG Pingping. Simulation study of pool fire thermal radiation consequence on gas station in the densely populated urban areas[J]. Safety and Environmental Engineering, 2018, 25(4):150-155.
[3]	BHARDWAJ U, TEIXEIRA A P, SOARES C G, et al. Evidence based risk analysis of fire and explosion accident scenarios in FPSOs[J]. Reliability Engineering & System Safety, 2021, 215:DOI: 10.1016/j.ress.2021.107904. doi: 10.1016/j.ress.2021.107904
[4]	REIMER B. Types of explosions and their relations to legislative regulations[C]. GVC/DECHEMA Annual Meeting, 2003:875-885.
[5]	WEERHEIJM J, VERREAULT J, VANDERVOORT M M. Quantitative risk analysis of gas explosions in tunnels[J]. Fire Safety Journal, 2018, 97:146-158. doi: 10.1016/j.firesaf.2017.06.003
[6]	PAPAZOGLOU I A, ANEZIRIS O N, KONSTANDINIDOU M, et al. Occupational risk management for vapour/gas explosions[C]. European Safety and Reliability Conference (ESREL)/17^th Annual Meeting of the Society-for-Risk-Analysis-Europe (SRA-Europe), 2009:777-785.
[7]	陈伟珂, 张欣. 危化品储运火灾爆炸事故多因素耦合动力学关系[J]. 中国安全科学学报, 2017, 27(6):49-54. doi: 10.16265/j.cnki.issn1003-3033.2017.06.009
	CHEN Weike, ZHANG Xin. Dynamic relationship between multi coupling risk factors of hazardous chemical storage and transportation fire and explosion accidents[J]. China Safety Science Journal, 2017, 27(6):49-54. doi: 10.16265/j.cnki.issn1003-3033.2017.06.009
[8]	王三明, 蒋军成. 沸腾液体扩展蒸气爆炸机理及相关计算理论模型研究[J]. 工业安全与环保, 2001, 27(7):30-34.
	WANG Sanming, JIANG Juncheng. Studies on mechanism and correlative theoretic models of boiling liquid expending vapor explosion[J]. Industrial Safety and Environmental Protection, 2001, 27(7):30-34.
[9]	杨恒, 谢兴华, 张良杰. 温岭槽罐车爆炸事故分析及其威力评估[J]. 火工品, 2020(5):57-60.
	YANG Heng, XIE Xinghua, ZHANG Liangjie. Analysis and disaster consequence assessment of tank truck explosion accident in Wenling[J]. Initiators & Pyrotechnics, 2020(5):57-60.
[10]	徐亮. 典型热塑性装饰材料火灾特性研究[D]. 合肥: 中国科学技术大学, 2007.
	XU Liang. The study on fire performance of typical thermoplastic lining[D]. Hefei: University of Science and Technology of China, 2007.
[11]	李胜利, 李孝斌. FDS火灾数值模拟[M]. 北京: 化学工业出版社, 2019:1-11.
[12]	季经纬, 程远平. 火灾动力学[M]. 徐州: 中国矿业大学出版社, 2018:15-27.
[13]	张国维, 朱国庆, 吴维华, 等. 基于性能化防火设计的建筑“准安全区”判定方法[J]. 中国安全科学学报, 2011, 21(4):60-65.
	ZHANG Guowei, ZHU Guoqing, WU Weihua, et al. A judgment method for "quasi-security zone" based on performance-based fire protection design[J]. China Safety Science Journal, 2011, 21(4):60-65.
[14]	The Chartered Institution of Building Services Engineers. Technical memoranda TM19: relationships for smoke control calculations[M]. London: Bourne Press Ltd, 1995:3-5.
[15]	HADJISOPHOCLEOUS G V, BENICHOU N. Performance criteria used in fire safety design[J]. Automation in Construction, 1999, 8(4):489-501. doi: 10.1016/S0926-5805(98)00096-X

模型	计算结果
模型	最大火球直径/m	火球持续时间/s
CCPS	174.954	11.522
ILO	169.828	13.176

楼层	温度危险时刻	能见度危险时刻	CO浓度危险时刻	危险来临时刻
1	23.1	22.7	39.8	22.7
2	21.8	34.7	38.5	21.8
3	21.8	35	38.2	21.8
4	22.3	34.7	38.9	22.3
5	23.5	34.1	38.5	23.5
6	23	34	38.2	23
7	22.9	34.2	38.5	22.9
8	22.6	34.5	38.5	22.6
9	22.5	34.1	38.5	22.5
10	23	34	38.2	23
11	22.3	34.2	38.5	22.3
12	22.3	33.9	38	22.3
13	22	34	38.5	22
14	22.3	34	38.3	22.3
15	22.5	34.1	38	22.5
16	22.3	33.8	38.5	22.3
17	22	34	38	22
18	23.9	35	38.5	23.9