安全、健康和环境2025，Vol.25Issue(7)：14-19,6.DOI:10.3969/j.issn.1672-7932.2025.07.003
隧道内输氢管道泄漏扩散模拟研究
Simulation Study on Leakage and Diffusion of Hydrogen Transmission Pipelines in Tunnels
摘要
Abstract
With the rapid development of the hydrogen energy industry,the application of hydrogen trans-mission pipelines in tunnels is increasing day by day,so the risk of hydrogen leakage urgently needs systematic assessment.Based on the real tunnel scene,a hydrogen leakage model of the hydrogen transmission pipeline was established,and the FLACS software was used to numerically simulate the hydrogen diffusion behavior and accident consequences under different leakage conditions.The results showed that the leakage pore diameter had a significant influence on the hydrogen concentration distribution and the volume of combustible cloud masses.Within the leakage range from small holes to large holes(aperture 6.1～61 mm),the volume of combustible cloud masses increased linearly with the increase of aperture.When the pipeline was completely ruptured(with a diameter of 610 mm),limited by the turbulent diffusion rate,the volume growth rate of the combustible cloud mass slowed down.Furthermore,the hydrogen concentration at the monitoring points in the tunnel showed sig-nificant spatial heterogeneity.The concentration in the area near the leakage source(0～5 m)instantaneously exceeded the lower explosive limit(4%,volume fraction),and the rising rate decayed exponentially with the increase of distance.Compared with large-aperture leakage,the effect of concentration attenuation with distance was more significant in small-aperture leakage(6.1 mm).The research results can provide quantitative theoret-ical basis for the safe design of hydrogen transmission pipelines in tunnels,the optimal layout of monitoring points,risk classification and the formulation of emergency evacuation strategies,which is of great engineering significance for ensuring the safe and reliable operation of hydrogen transportation infrastructure in tunnel sce-narios.关键词
输氢管道/氢气泄漏/FLACS数值模拟/可燃云团/湍流扩散Key words
hydrogen transmission pipeline/hydrogen leakage/FLACS numerical simulation/combustible cloud mass/turbulent diffusion分类
能源科技引用本文复制引用
聂世帅,鲍磊,仉志,刘欢,于安峰..隧道内输氢管道泄漏扩散模拟研究[J].安全、健康和环境,2025,25(7):14-19,6.基金项目
国家重点研发计划(2023YFE0199100),氢能工厂和车辆应用过程中氢气释放扩散研究及安全标准规范构建. （2023YFE0199100）
