摘要
针对某古镇商铺建筑耐火等级低、防火间距不足而等问题,运用FDS6.7.5软件进行了商铺建筑火灾蔓延数值模拟分析,分析结果表明:在5MW火灾规模下,火灾发生后,114s-125s内,顶棚将被引燃,火灾开始竖向蔓延。178s后,轰燃已发生,火灾进入全面燃烧阶段。302s-324s(5.02min-5.4min)内,距商铺2.5m处另一商铺将被引燃,火灾开始水平蔓延。分析结果可为古镇制定有针对性的防火改造、消防安全管理和灭火救援等方面措施提供技术参考。
There are such problems as low fire resistance rating and inadequate fire protection distance of commercial buildings in one ancient town.Thus,the author simulated fire spread in these buildings by using FDS6.7.5.The result shows that under the scale of 5MW fire,the ceiling will be ignited within 114s to125s,and the fire begins to spread vertically.Flashover has occurred after 178s,and the fire entered the combustion stage.From 302s to 324s(5.02min to5.4min),another shop 2.5m away will be ignited,and the fire began to spread horizontally.The analysis results can provide technical reference for the ancient town to develop targeted strategies of fire-prevention renovation,fire-safety management,and fire control and rescue.
出处
《中国应急救援》
2021年第3期55-58,44,共5页
China Emergency Rescue
关键词
火灾蔓延
数值模拟
古镇消防安全
fire spread
numerical simulation
fire safety in ancient town
