地下综合管廊天然气泄漏扩散及爆炸研究综述
Research on Natural Gas Leakage,Diffusion and Explosion in Gas Chambers of Urban Utility Tunnels
沈静 1杜胜群 1李昕岳 1杨凯 1吕鹏飞1
作者信息
- 1. 北京石油化工学院 安全工程学院并氢能研究中心,北京 102617
- 折叠
摘要
该文针对城市地下综合管廊燃气舱内的天然气泄漏、扩散以及火灾爆炸风险等问题开展综述分析.关于燃气舱内天然气管线的泄漏研究,必须充分考虑泄漏孔的位置、尺寸、管道工作压力即管线内压强变化、通风和气体探测器报警时限等影响,当舱室天然气大量泄漏后,仅增加通风次数无法有效防止天然气积聚,必须同时启用舱内防火门进行截断隔离措施.分析受限空间内气体爆炸已有的研究进展,结果表明,针对燃气舱天然气泄漏爆炸的模拟研究,应充分考虑管廊长径比及舱内物体的影响;且爆炸冲击波强度较高,需采用相应的防爆抑爆措施.本文为城市地下综合管廊中天然气管道运输的安全性研究提供了方向和参考.
Abstract
This review explores issues related to natural gas leakage,diffusion and explosion within gas com-partments in urban utility tunnels.Research on gas leaks in gas compartments must consider the location,size,pipeline operating pressure(pressure variations within the pipeline),ventilation,and the alarm response time of gas detectors.When a significant gas leak occurs in the compartment,increasing ventilation alone is insufficient to prevent gas accumulation.It is necessary to simultaneously activate compartmental fire doors for containment and isolation.Summarizing existing research findings on confined space gas explosions indicates that simulation studies of gas leaks and explosions in gas compartments should thoroughly consider the tunnel′s length-to-diameter ratio and the influence of objects inside the compartment.Additionally,the explosion shock wave intensity is high,necessitating the implementation of appropriate explosion-proof measures.Valuable insights for further re-search on the safety of natural gas pipeline transportation in urban utility tunnels are provided.
关键词
综合管廊/燃气舱/泄漏扩散/爆炸/报警响应Key words
utility tunnel/gas chamber/gas leakage and diffusion/gas explosion/alarm and response引用本文复制引用
出版年
2025
国家科技期刊平台
NSTL
万方数据