[关键词]
[摘要]
论述可有效分析地铁空气环境的软件 SES (SubwayEnvironmentalSimulation)?对其中的火源模型 进行详细介绍。利用该软件?对北京地铁 7号线达官 营站-广安门站内区间火灾工况下的不同通风方案进 行模拟分析。通过计算结果可知:开启着火区间两端 车站隧道风机以及在区间渡线位置增加射流风机?均 不能保证区间的风速要求;在本区间内设置中间风井 并开启区间风机及着火区间两端车站风机后?着火区 间风速为 2?6m/s?可满足规范要求。
[Key word]
[Abstract]
SES (subwayenvironmentalsimulation) iseffective softwaretosolvesubwayenvironmentproblems.Thisarticlegivesa detailedintroductionofthefiremodelofSES?basedonwhicha simulationwascarriedoutonthedifferentventilationoptionsforthe tunnelbetweenDaguanyingStationandGuanganmengneiStationon BeijingmetroLine7inwhichoccurredafireaccident.Simulation resultsindicatedthatairvelocityinthetransittunnelonfirewas below2.0m/swhenventilationfansontwoadjacentstationswere opentogetherwiththejetfanopenedonthetransittunnelcross-over? whiletheairvelocitywas2.6m/swhenamid-tunnelventilationshaft wasprovidedandthefanintransittunnelandthefansonboth stationsadjacenttothetransittunnelwereopen?thereuponthe requirementsofventilationbyCodecanbesatisfied
[中图分类号]
U231?5
[基金项目]