实体隧道火灾温度分布试验研究  

The experimental research on distribution of fire temperature in entity tunnel

作　　者：帅卫红[1] 倪天晓[2] 周湘川[2] 张新[2] 

机构地区：[1]湖南省消防总队,湖南长沙410205 [2]中南大学防灾科学与安全技术研究所,湖南长沙410075

出　　处：《消防科学与技术》2012年第1期8-12,共5页Fire Science and Technology

摘　　要：建立实体隧道火灾现场试验系统及数据采集系统,通过在岩门界隧道开展的实体隧道火灾试验,测试了不同通风模式、不同火灾工况下隧道火源上、下游不同断面处的温度变化及隧道拱顶的温度变化。试验结果表明,与车行方向相同的1.8m/s机械通风能在一定程度上延缓烟气蔓延;有与车行方向相反的自然风时,火源下游温度较低,最高温度出现在火源上游;有机械通风时,温度随风向、风速而变化。The field fire testing system in entity tunnel and data acquisition system were established. The temperature variation of different cross-sections at upstream and downstream of fire source and tunnel vault with different ventilation modes under different fire conditions were measured by entity fire tests in Yanmenjie tunnel. The results showed that mechanical ventilation of 1.8 m/s along the automobile driving directions can delay the smoke spreading; when there is nature ventilation against the automobile driving directions, temperature downstream is lower, while the highest temperature appears at up stream; when there is mechanical ventilation, the temperature varies with the wind direction and speed.

关 键 词：关键词:实体隧道 全尺寸火灾试验 通风模式 火灾功 率 温度 

分 类 号：X913.4[环境科学与工程—安全科学] U459[建筑科学—桥梁与隧道工程]