全尺寸巷/隧道火灾风烟流温度预测模型与验证  

Prediction model and verification of smoke flow temperature in full-scale roadway/tunnel fires

作　　者：李晴 康建宏[1,2] 周福宝 雷柏伟[4] LI Qing;KANG Jianhong;ZHOU Fubao;LEI Bowei(School of Safety Engineering,China University of Mining and Technology,Xuzhou Jiangsu 221116,China;Jiangsu Key Laboratory of Fire Safety in Urban Underground Space,Xuzhou Jiangsu 221116,China;China Academy of Safety Science and Technology,Beijing 100012,China;School of Emergency Management and Safety Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China)

机构地区：[1]中国矿业大学安全工程学院,江苏徐州221116 [2]江苏省城市地下空间火灾防护高校重点实验室,江苏徐州221116 [3]中国安全生产科学研究院,北京100012 [4]中国矿业大学(北京)应急管理与安全工程学院,北京100083

出　　处：《中国安全生产科学技术》2022年第8期5-12,共8页Journal of Safety Science and Technology

基　　金：国家重点研发计划重点专项项目(2018YFC0808100)。

摘　　要：为探究巷/隧道火灾热动力灾害的演化规律,基于能量守恒定律和热量转换关系,建立巷/隧道火灾风烟流温度演化的预测模型;考虑巷道分叉和汇合对烟气蔓延和温度的影响,构建分叉和汇合巷道内烟流温度随时间变化的演化模型。通过开展全尺寸巷道火灾实验以及与国内典型隧道火灾试验数据对比,对理论模型进行验证。研究结果表明:理论模型所呈现的烟气温度随时间的变化关系,能较好地反映火灾发展的3个阶段,烟气温度的变化趋势符合火灾火源燃烧特性曲线;理论模型能够准确地预测顶棚最大烟气温升以及温度纵向衰减现象,烟气最高温度预测值与实验结果的误差率在15%以内。研究结果可为巷/隧道火灾时期的烟气控制和救援提供理论参考。In order to explore the evolution law of thermal dynamic disaster in roadway/tunnel fires,based on the law of energy conservation and heat conversion relationship,a prediction model of smoke flow temperature evolution in roadway/tunnel fires was established.Considering the influence of tunnel bifurcation and confluence on the smoke spread and temperature,the evolution models of smoke flow temperature in bifurcation and confluence roadways with time were constructed.Through conducting the full-scale roadway fire experiments and comparing with the domestic large-scale tunnel fire test data,the theoretical model was verified.The results showed that the variation of smoke temperature with time presented by the theoretical model could better reflect the three stages of fire development.The variation trend of fire smoke temperature conformed to the combustion characteristic curve of the fire source.The theoretical model could accurately predict the maximum smoke temperature rise beneath the ceiling and longitudinal attenuation of temperature,and the error rate between the predicted values and the experimental results of the maximum smoke temperature was within 15%.The research results can provide theoretical reference for smoke control and fire rescue during the tunnel fire period.

关 键 词：隧道火灾 理论模型 全尺寸巷道实验 烟气演化规律 

分 类 号：X932[环境科学与工程—安全科学]