石油与天然气化工Issue(1)：93-98,6.DOI:10.3969/j.issn.1007-3426.2015.01.021
建筑群外埋地燃气管道泄漏的风险性评估
Leakage risk evaluation of buried gas pipeline outside the buildings
摘要
Abstract
In view of the problem of buried gas pipeline piercing leakage outside the buildings ,a three‐dimensional simulation model was established with Gambit2 .4 .The continuous leak diffusion circumstance of gas in soil and atmosphere were carried out through numerical modeling by CFD soft‐ware Fluent 14 .0 under different ambient temperature and humidity .The influence factor of gas dif‐fusion and the distribution regularity of concentration were comparatively analyzed under the coupling effect of ambient temperature and relative humidity .The research result showed that the gas ejecting from the leakage mouth first spread rapidly in the soil layer ,resulting in the concentration of the up‐per surface quickly reaching the lower explosive limit and upper explosive limit .As the gas permea‐ting through the earth surface ,it influenced both sides of the building .Different concentration diffu‐sion regions also formed on the windward side and the leeward side direction .Affected by different humidity and temperature ,for some buildings ,the warning concentration on the height of surface changed obviously .T he case study results could assess the scope of the gas leak accident and effective‐ly evacuate the masses in time .关键词
建筑群/燃气管道/扩散/耦合作用/风险/评估Key words
building group/gas pipeline/diffusion/coupling effect/risk/evaluation分类
能源科技引用本文复制引用
王鹤超,吴明,杨蕊,程猛猛,张尚洲..建筑群外埋地燃气管道泄漏的风险性评估[J].石油与天然气化工,2015,(1):93-98,6.基金项目
国家质检总局科研项目“质检公益性行业科研专项项目”（201010025）。 （）
