城镇建筑物附近天然气管道泄漏模拟分析

Simulation Analysis of Natural Gas Pipeline Leakage in the Vicinity of Urban Buildings

城镇天然气管道往往分布在人群和建筑物集中的区域,且天然气输送管网越来越复杂,使得城镇天然气泄漏事故成为相较于其他易燃易爆气体泄漏事故发生更频繁、危害更严重的事故。不仅妨碍管道的安全运行、污染环境、造成巨大的经济损失,还会引起中毒、火灾、爆炸等重大人员伤亡事故。对多种泄漏情况进行了模拟分析,掌握天然气管道泄漏扩散的规律,对城镇管网的安全运营有着现实意义。

Urban natural gas pipeline is often distributed in regions where population and buildings are concentrated; in addition, natural gas transportation network is becoming more and more complicated, which can make the city natural gas leakage accidents become more frequent and more dangerous compared to other flammable and explosive gas leakage accidents. These accidents can not only hinder the operation safety of urban natural gas pipeline, cause environmental pollution and huge economic losses, but also cause poisoning, fire, explosion and other major casualties In this paper, simulation analysis of various leakage situation was carried out, the rule of the natural gas pipeline leakage diffusion was determined, which had practical significance to safe operation of urban pipe network.