摘要
针对城市燃气管道泄漏事故,分析了燃气管道泄漏后可能会导致喷射火、气云燃烧和气云爆炸等事故后果类型,利用ALOHA模拟软件中的喷射火模型、闪火模型和气云爆炸模型对上述三种事故后果类型分别进行数值模拟,得到每种事故可能的影响区域,并根据事故后果的严重程度,将危险区域划分为不同的等级。最后以北京市某次高压燃气管道发生泄漏导致火灾爆炸事故为例,利用上述方法模拟可能导致的不同事故后果,得到事故的不同分区,并将图表中的模拟结果定位在地图中,实现了事故影响区域的直观表现,有助于为事故后的应急救援和人员紧急疏散提供地理位置信息。
Aiming at the leakage accidents of the urban natural gas pipeline,this paper analyzes the types of accident consequences including jet fire,flash fire and vapor cloud explosion.Then the paper conducts numerical simulations of the above three types by applying the corresponding models in ALOHA to obtain the affected areas under each accident scenario.Next,the paper divides the dangerous areas into different levels based on accident consequences.Lastly,the paper takes the fire and explosion accidents caused by the leakage of a sub-high pressure natural gas pipeline in Beijing as an example,applies the above method to simulate the possible accident consequences and obtain the sub-regions.Besides,in order to realize the visualization of the affected areas,the paper shows the simulation results on Google Earth,which shall be helpful for emergency rescue and evacuation after accidents by providing geographical position information of the accidents.
出处
《安全与环境工程》
CAS
2016年第2期75-79,共5页
Safety and Environmental Engineering
关键词
ALOHA
燃气管道泄漏
火灾爆炸
影响区域
数值模拟
ALOHA
natural gas pipeline leakage
fire and explosion
affected area
numerical simulation
作者简介
马庆春（1972-），女，博士，副教授，主要从事石油化工安全检测与事故模拟技术等方面的研究。E-mail：maqingchun@cup．edu．cn
