摘要
为了完善多米诺事故风险定量评估方法,该文针对现有多米诺事故研究中的不同类型事故物理效应(热辐射、泄漏的有毒气体)及环境风速风向间的耦合作用展开研究,通过经验模型分析耦合作用机制,对实验装置模型采用计算流体动力学(CFD)软件数值模拟火灾与有毒气体泄漏事故的耦合情形。模拟结果表明,物理效应间的耦合作用会放大事故后果严重程度。以某危险品库发生过的多米诺事故为案例进行风险定量评估,发现物理效应耦合作用会显著放大个人风险,而根据具体情况不同,环境风速风向既可能放大个人风险,也可能对风险起到抑制作用。结果表明,在多米诺事故风险定量评估过程中应当考虑事故物理效应间的耦合作用。该研究可为提升多米诺事故风险定量评估方法的准确性提供重要参考。
To enhance the quantitative risk assessment method for domino accidents,this study investigated the synergistic impact between the wind and the physical effects(thermal radiation,toxic gas leakage)of different types of accidents.The mechanism of the synergistic effect was analyzed using empirical models.The synergistic situation between fire and toxic gas leakage was simulated using an experiment device model in computational fluid dynamics(CFD)software.The simulation results revealed that the synergistic effect could amplify the accident consequence severity.A hazardous chemical warehouse was taken as a case study for quantitative risk assessment.It was found that the synergistic effect would significantly amplify the individual risk,while the wind could either amplify or inhibit the risk,depending on the specific situation.The result indicates that the synergistic physical effects should be considered in the quantitative risk assessment of domino accidents.This research can serve as an important reference for improving the accuracy of the quantitative risk assessment for domino accidents.
作者
沈锴欣
贺治超
翁文国
SHEN Kaixin;HE Zhichao;WENG Wenguo(Institute of Public Safety Research,Department of Engineering Physics,Tsinghua University,Beijing 100084,China)
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2022年第10期1559-1570,共12页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金重点项目(72034004)
国家杰出青年科学基金项目(71725006)。
关键词
多米诺事故
风险定量评估
物理效应
耦合作用
数值模拟
domino accident
quantitative risk assessment
physical effects
synergistic effect
numerical simulation
