An open-source information fusion-based analysis method for public safety explosion accidents
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摘要: 为快速、准确评估爆炸事故的影响范围和损伤程度,制定科学合理的应急响应策略,提出了一种基于开源信息融合的公共安全爆炸事故分析方法。进一步,针对山东高密“5·27”化工车间爆炸事故,快速构建了事故分析逻辑链条,即:基于开源信息获取爆炸发生、冲击波传播、爆炸后厂区和远区建筑结构损伤破坏等重要信息;基于建筑结构毁伤判据和冲击波传播规律,反演爆源位置和爆炸当量,并分析事故发生原因;基于数值仿真方法,为工业厂房的安全防护提供依据。结果表明:爆源位于1号硝化装置,爆炸等效TNT当量约为
12000 kg,与基于现场勘察的调查结果一致,验证了该方法的有效性和准确性;此次事故主要原因是由于该公司实际生产负荷超出设计标准,设备长期处于满负荷运行状态,且长期忽视安全联锁系统;生产厂区应从严控爆炸危险物存量、总平面分区隔离、防殉爆安全管控、重点涉爆装置外围防护4个方面加强建筑抗爆性能,降低爆炸事故造成的人员、设备损伤,缩小毁伤范围。Abstract: Following an explosion accident, a public safety explosion accident analysis method based on open-source information fusion was proposed to quickly and accurately assess the scope and severity of the accident's impact and to formulate a scientific and reasonable emergency response strategy. Furthermore, regarding the May 27 chemical plant explosion accident in Gaomi, Shandong, a logical chain for accident analysis was rapidly constructed. Specifically, open-source information was used to obtain critical details such as the explosion generation, the shock waves propagation, and structural damage to buildings in both the plant area and far field. Based on criteria for structural damage and the laws of shockwave propagation, the explosion source location and TNT equivalent were reverse-calculated, and the cause of the accident was analyzed. Numerical simulations provided key evidence for improving safety protection in industrial plants. The results indicate that the explosion source was located at the No.1 nitration device, with a TNT equivalent of approximately12000 kg TNT, consistent with the conclusion based on field investigation, thereby verifying the effectiveness and accuracy of this method. The main causes of the accident were identified as the company's actual production load exceeding design standards, prolonged operation of equipment under full load conditions, and long-term neglect of the safety interlock system. The production plant should strengthen the blast-resistant protection measures for buildings from four aspects: control the stockpile of explosive hazardous materials, general layout zoning and isolation, safety control against sympathetic detonation, and peripheral protection for key explosion-prone installations, so as to improve the structural blast resistance, reduce casualties and equipment damage, and narrow the damage scope. The proposal of this method provides a novel approach to the existing accident investigation system, effectively enriches investigation techniques, overcomes the limitations of traditional analytical methods, and demonstrates the necessity for continued research and practical value. -
表 1 冲击波超压作用下建筑物的毁伤等级[19]
Table 1. Damage levels of building structures under shock wave pressure[19]
毁伤
等级破坏特征描述 超压阈值/
kPa玻璃 木门窗 砖外墙 木屋盖 钢砼屋盖 瓦屋面 顶棚 内墙 无毁伤 偶然破坏 无损伤 无损伤 无损伤 无损伤 无损伤 无损伤 无损伤 2 轻度 部分呈
小块破坏窗扇破坏、窗框
门窗破坏裂缝较小,最大
宽度小于5 mm木屋面板变形、
偶然折裂无损伤 大量移动 抹灰大量
掉落板条墙
抹灰大量掉落2~25 中度 粉碎 窗扇掉落内倒窗框
门扇大量破坏裂缝较大宽度
5~50 mm、砖垛
明显倾斜木屋面板变形、
偶然折裂,木
屋架支座松动出现微小裂缝、
最大宽度小于
1 mm大量移动到
全部掀掉木龙骨部分
破坏、下垂砖内出现小裂缝 25~40 重度 − − 部分倒塌 部分倒塌 出现较宽裂缝 − − 砖内墙出现严重
裂缝到部分倒塌40~76 -
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