主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2023, Vol. 42 ›› Issue (5): 622-626.

• • 上一篇    下一篇

基于优化TNT当量法的LPG储罐爆炸冲击波超压预测

门金龙, 亢方超, 熊碧波, 陈志滔   

  1. （广东石油化工学院 机电工程学院，广东 茂名 525000）
  • 出版日期:2023-05-15 发布日期:2023-05-15
  • 作者简介:门金龙（1988- ），男，河南驻马店人，广东石油化工学院机电工程学院副教授，博士，主要从事安全科学技术和应急管理方面的研究，广东省茂名市茂南区官渡二路139号，525000。
  • 基金资助:
    广东省自然科学基金面上项目（2021A1515010166）；广东省高等教育学会实验室管理专业委员会基金项目（GDJ2022017）；茂名市科技计划项目（2020543）

Calculation of LPG storage tank explosion shock wave overpressure based on optimized TNT equivalent method

Men Jinlong, Kang Fangchao, Xiong Bibo, Chen Zhitao   

  1. (College of Mechanical and Electrical Engineering, Guangdong University of Petrochemical Technology, Guangdong Maoming 525000, China)
  • Online:2023-05-15 Published:2023-05-15

摘要： 为了提高化工储罐爆炸冲击波超压预测科学性、准确性，采用TNT当量法、TNO多能法和Baker-Strehlow模型进行典型LPG储罐爆炸冲击波超压预测，分析了3种模型预测结果差异与偏差原因；根据储罐区空间布局和LPG爆炸极限范围修正了实际参与爆炸物质的TNT当量取值，并建立LPG储罐爆炸ANSYS数值模型进行验证。结果表明：在本文LPG储罐区爆炸场景中，修正后实际参与爆炸LPG的TNT当量取值为5 130.25 kg；在此基础上TNT当量法预测偏差均远小于3种爆炸冲击波超压经验模型，预测中远场及远场超压时偏差基本在10%以下，一定程度上减小了经验模型预测误差，实现爆炸冲击波超压科学预测。研究结果可为化工聚集区爆炸事故防控、安全防护工程建设提供参考。

关键词: LPG储罐, 冲击波超压, TNT当量法

Abstract: In order to improve the scientific and accurate prediction of the explosion shock wave overpressure of chemical storage tanks, TNT equivalent method, TNO Multi-Energy method and Baker-Strehlow model were used to predict the explosion shock wave overpressure of typical LPG storage tanks. The differences and deviations of the three models were analyzed. According to the spatial layout of the storage tank area and the LPG explosion limit range, TNT equivalent value of actual explosive material was fixed. The ANSYS numerical model of LPG tank explosion was established for verification. The results showed that in the explosion scenario of LPG storage tank area in this paper, the actual TNT equivalent value of LPG involved in explosion after correction was 5 130.25 kg. On this basis, the prediction deviation of TNT equivalent method was far less than that of the three empirical models of explosion shock wave overpressure, and the prediction deviation of the far field and far field overpressure was basically less than 10%, which reduced the prediction error of the empirical model to a certain extent and realized the scientific prediction of explosion shock wave overpressure. The research results can provide reference for the prevention and control of explosion accidents and the construction of safety protection projects in chemical gathering areas.

Key words: LPG storage tank, shock wave overpressure, TNT equivalent method