爆破器材2025，Vol.54Issue(6)：25-33,9.DOI:10.3969/j.issn.1001-8352.2025.06.004
隧道环境下多组分气体爆炸特性的试验研究
Experimental Study on Explosion Characteristics of Multicomponent Gases in Tunnels
摘要
Abstract
To address the insufficient research on the explosion hazards of thermal runaway gases from new energy vehicle power batteries in tunnels,small-scale pipeline experiments were designed to simulate the explosion of leaked gases from battery thermal runaway in tunnels.Explosion characteristics of single-component and multi-component combustible gases at different stoichiometric concentrations were investigated,as well as the effects of varying blockage ratios σBR and the number of obstacles n0 in a straight pipeline.The simulation results indicate that,for H2-air mixtures without obstacles,the explosion pressure initially increases and then decreases with the increase of concentration,reaching a maximum of 705.7 kPa at φH2=60%.In H2-CH2-air mixtures,the explosion pressure also exhibits a trend of first increasing and then decreasing with the increase of hydrogen fraction X,attaining a maximum pressure of 420.2 kPa when X is 0.9.n0 has different effects on the explosion characteristics of mixed gases with different H2 concenlrations.When φH2 is 20%with a constant σBR,the peak overpressure first increases and then decreases as the n0 rises.At φH2=30%,the peak overpres-sure continuously increases.But at φH2=50%,it consistently decreases.Additionally,under constant φH2 and n0,the peak overpressure tends to decrease with increasing σBR.关键词
隧道/动力电池/可燃气体/障碍物/爆炸超压Key words
tunnel/power battery/combustible gas/obstacle/explosion overpressure分类
化学化工引用本文复制引用
张鸿飞,宋先钊,周龙,邓树新,卢浩,李毅,夏梦涛,陈丹鹤..隧道环境下多组分气体爆炸特性的试验研究[J].爆破器材,2025,54(6):25-33,9.基金项目
江苏省自然科学基金青年基金(BK20230936) （BK20230936）
中交隧道工程局有限公司科研项目[X-GD-SS(S)-JIS-HTCJSD-A4-JS-002] （S）
江苏省卓越博士后项目(2024ZB339) （2024ZB339）
中国博士后科学基金面上项目(2024M764225) （2024M764225）
