半敞开式隧道火灾的理论分析  

Fires in semi-opened tunnels

作　　者：王彦富[1] 蒋军成[1] 龚延风[1] 茅靳丰[2] 钟星灿[3] 

机构地区：[1]南京工业大学,江苏南京210009 [2]解放军理工大学工程兵工程学院,江苏南京210007 [3]铁道第二勘察设计院,四川成都610031

出　　处：《解放军理工大学学报（自然科学版）》2009年第1期43-48,共6页Journal of PLA University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50206009)

摘　　要：为了研究隧道火灾的火羽流特性,验证半敞开式隧道采用自然通风模式下发生火灾时是否安全,在已建成的半敞开式隧道中设计并实施了全尺寸火灾试验,得到了半敞开式隧道火灾的烟气温度变化规律和烟气纵向蔓延数据。用OriginPro7.5软件对实验数据进行处理、拟合,得到隧道火灾烟气温度随着离开火源距离纵向衰减的规律;结合火灾动力学分析建立了预测烟气逆流距离的理论模型。根据隧道火灾实验结果与理论模型预测结果的对比,验证了所建理论模型的有效性。全尺寸火灾实验结果验证了李开源和H.Kurioka等人建立的隧道火羽流模型及其计算公式可以用于半敞开式隧道自然通风的研究。In order to validate the safety of semi-opened tunnel with natural ventilation in fire and to research the tunnel fire plume characteristics,full-scale fire tests were designed and conducted in the built semi-opened tunnel.The diversification laws of smoke temperature and smoke longitudinal propagation data were collected.The test data were imitated by OriginPro7.5 software and the longitudinal diversification laws of smoke temperature varying with the distance from the fire source were gained.Prediction mo...

关 键 词：半敞开式隧道 火灾 自然通风 

分 类 号：U453.8[建筑科学—桥梁与隧道工程]