集中排烟隧道排烟口合理间距试验研究

发布时间：2018-04-16 03:35

本文选题：隧道 + 排烟口间距　；参考：《现代隧道技术》2016年04期

【摘要】：排烟口间距是影响集中排烟隧道烟气控制效果的一个重要因素。文章采用1∶20缩尺比例、长22 m的隧道模型,对3 m与5 m两种排烟口间距、4个排烟口对称开启、双向集中排烟效果进行试验研究,对比分析了两种间距下的隧道顶板下方烟气温度、烟气蔓延长度和烟气层厚度。实验结果表明:1∶20缩尺模型试验中,3 m与5 m的排烟口间距都能满足隧道火灾安全排烟的要求,两者排烟效果差异较小;但排烟口间距为3 m时更加保守和安全,即间距3 m的排烟口设计要优于5 m间距。
[Abstract]:The distance between flue gas outlets is an important factor affecting the smoke control effect of centralized exhaust tunnel.In this paper, the tunnel model with 1:20 scale scale and 22 m length is used to test and study the distance between 3 m and 5 m, the symmetrical opening of 4 exhaust outlets and the effect of bidirectional centralized exhaust.The flue gas temperature, flue gas spread length and flue gas layer thickness under the two kinds of spacing are compared and analyzed.The experimental results show that the distance between 3 m and 5 m in the 1: 20 scale model test can meet the requirement of safe smoke exhaust in tunnel fire, and the difference of smoke exhaust effect between the two is small, but the distance between the two outlets is more conservative and safe when the distance of the exhaust pipe is 3 m.That is, the design of smoke outlet with 3 m spacing is better than that of 5 m space.
【作者单位】：武汉科技大学资源与环境工程学院;建筑消防工程技术公安部重点实验室;
【基金】：湖北省自然科学基金计划面上项目(2015CFB200) 湖北省教育厅科学研究计划重点项目(D20151207) 建筑消防工程技术公安部重点实验室开放课题(KFKT2014MS01)
【分类号】：U453.5

【相似文献】