In the chemical industry, when a fire occurs, a significant amount of energy is generated due to combustion, impacting other facilities within the plant and potentially leading to severe consequences through a domino effect. For decades, thermal radiation caused by flames has been calculated and predicted through simplified fire modeling. However, with advancements in computing technology, numerical model-based calculations have greatly improved, allowing for a more realistic implementation that considers actual phenomena. In this study, accident data and 3D modeling information were utilized to conduct fire modeling and simulation based on actual incidents in chemical plants. Through the analysis of simulation results, the initial emergency evacuation distance was provided to minimize the damage caused by thermal radiation, and the final evacuation distance was presented using the probit function. In addition, the study evaluated the impact of generated thermal radiation and overpressure on structures and equipment, providing evidence regarding the potential for secondary incidents. Moreover, the research revealed that the impact of thermal radiation and overpressure decreases due to obstacles, offering insights into the selection of emergency evacuation routes. This study can contribute to supporting effective emergency evacuation strategies in chemical facilities.

中文翻译：

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通过化学事故模拟建模研究损害减轻方法

在化学工业中，当发生火灾时，燃烧会产生大量能量，影响工厂内的其他设施，并可能通过多米诺骨牌效应导致严重后果。几十年来，人们一直通过简化的火灾模型来计算和预测火焰引起的热辐射。然而，随着计算技术的进步，基于数值模型的计算得到了极大的改进，使得考虑实际现象的更现实的实现成为可能。本研究利用事故数据和3D建模信息，针对化工厂的实际事故进行火灾建模与模拟。通过对仿真结果的分析，给出了最小化热辐射造成的损害的初始紧急疏散距离，并利用概率函数给出了最终疏散距离。此外，该研究还评估了产生的热辐射和超压对结构和设备的影响，提供了有关二次事故可能性的证据。此外，研究表明，热辐射和超压的影响会因障碍物而减弱，这为紧急疏散路线的选择提供了见解。这项研究有助于支持化学设施中有效的紧急疏散策略。