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 ›› 2026, Vol. 45 ›› Issue (4): 97-103.

• • 上一篇    下一篇

柔性障碍物对有限空间可燃气体爆炸传播特性的影响研究

胡洋1,2, 吕硕1, 宋民航1,2, 耿畅1, 刘益君1   

  1. （1.应急管理大学 安全工程学院，北京 101601； 2.有毒有害气体监测预警应急管理部重点实验室，北京 101601）
  • 收稿日期:2025-01-10 修回日期:2025-04-07 出版日期:2026-04-15 发布日期:2026-04-15
  • 作者简介:胡 洋，应急管理大学安全工程学院系主任，教授，博士，主要从事工业事故安全与分析、可燃气体爆炸、光学显示爆炸流场研究，北京东燕郊高新技术产业开发区学院大街467号，101601。
  • 基金资助:
    国家重点研发计划项目（2024YFC3013801）；河北省教育厅科学研究项目（QN2025006）；中央高校基本科研业务费资助项目（3142024018）

Study on the influence of flexible obstacles on the explosion propagation characteristics of combustible gas in confined space

Hu Yang1,2, Lyu Shuo1, Song Minhang1,2, Geng Chang1, Liu Yijun1   

  1. (1. School of Safety Engineering, University of Emergency Management, Beijing 101601, China; 2. Key Laboratory of Toxic and Harmful Gas Monitoring and Early Warning, Ministry of Emergency Management, Beijing 101601, China)
  • Received:2025-01-10 Revised:2025-04-07 Online:2026-04-15 Published:2026-04-15

摘要： 为探究有限空间民用建筑结构内的燃气爆炸传播特性，利用长度为12 m、内径90 mm的圆形爆炸激波管道模拟现实爆炸情景，采用双向拉伸聚丙烯薄膜（BOPP薄膜）充当柔性障碍物模拟门窗等可破坏性建筑结构，开展体积分数为9.5%的甲烷/空气预混气体爆炸试验。研究结果表明，BOPP薄膜对甲烷爆炸的激励效应影响显著，可改变压力波系演化过程，加快火焰传播速度，破膜后压力波由连续的弱扰动波转变为突跃性的强压力波，最大火焰传播速度增加至177.30 m/s，为无膜工况下最大火焰传播速度的3.37倍。薄膜前后的气体条件对爆炸压力也具有显著影响，若膜后区域为可燃气体，破膜后高速运动的火焰会与可燃气体反应并产生爆轰现象，使得最大压力高达1 634.08 kPa，最大火焰传播速度为671.14 m/s，同时纹影图像显示了破膜后新激波产生与多道激波的叠加现象。

关键词: 有限空间, 激波管道, 柔性障碍物, 甲烷爆炸, 激波

Abstract: In order to explore the propagation characteristics of urban gas explosion in the confined space of civil building structures, a circular explosion shock pipe with a length of 12 m and an inner diameter of 90 mm was used to simulate the real explosion scenario, and biaxial stretched polypropylene film (BOPP film) was used as flexible obstacles to simulate destructive building structures such as doors and windows. A methane/air premixed gas explosion experiment with a volume fraction of 9.5% was carried out. The results show that the flexible obstacle film made of polypropylene material has a significant influence on the excitation effect of methane explosion, which can change the evolution process of pressure wave system and accelerate the flame propagation speed. After the film breaking, the pressure wave changes from a continuous weak disturbance wave to a sudden shock wave, and the maximum flame propagation speed increases to 177.30 m/s, which is 3.37 times that of the maximum flame propagation speed under the condition of no film. The gas conditions before and after the film also have a significant influence on the explosion pressure. If the region behind the film is combustible gas, the flame moving at high speed after the film is broken will react with the combustible gas and produce detonation phenomenon, making the maximum pressure as high as 1 634.08 kPa and the maximum flame propagation velocity as high as 671.14 m/s. At the same time, Schlieren technique was used to record the superposition of new shock waves and multi-channel shock waves during the evolution of wave system after film breaking.

Key words: confined space, shock wave tube, flexible obstacles, methane explosion, shock wave