| 耿德望,刘泓,王克,陆梓萍,杨立中.火源位置对L型管廊电缆火灾影响规律的数值模拟研究[J].火灾科学,2022,31(3):143-151. |
| 火源位置对L型管廊电缆火灾影响规律的数值模拟研究 |
| Numerical simulation on the influence of fire source location on cable fire in L-shaped utility tunnel |
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| DOI：10.3969/j.issn.1004-5309.2022.03.03 |
| 基金项目:国家自然科学基金项目(52076202);安徽省自然科学基金项目(2008085ME153);安徽省重点研发与开发计划项目(S2022m07020013) |
| 作者 | 单位 | | 耿德望 | 中国科学技术大学火灾科学国家重点实验室,合肥,230026 | | 刘泓 | 中国科学技术大学火灾科学国家重点实验室,合肥,230026 | | 王克 | 中国科学技术大学火灾科学国家重点实验室,合肥,230026 | | 陆梓萍 | 中国科学技术大学火灾科学国家重点实验室,合肥,230026 | | 杨立中* | 中国科学技术大学火灾科学国家重点实验室,合肥,230026 |
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| 中文关键词: L型综合管廊 电缆火灾 火源位置 温度纵向衰减 烟气危害性 数值模拟 |
| 英文关键词:L-shaped utility tunnel Cable fire Fire source locations Longitudinal temperature attenuation Smoke hazard Numerical simulation |
| 摘要点击次数: 222 |
| 全文下载次数: 699 |
| 中文摘要: |
| 选取某城市L型综合管廊电缆舱为研究对象,采用FDS数值模拟软件研究了不同火源位置对L型管廊电缆火灾温度纵向衰减规律、烟气浓度分布规律及烟气危害性的影响。研究结果表明,L型廊道构型影响了不同火源位置的管廊电缆火灾最高温度纵向衰减的连续性,基于热边界层理论提出了适用于L型管廊的二维平面最高温度纵向衰减模型。基于峰宽时间计算了L型管廊火灾的烟气总危害性参数,不同火源位置的烟气危害性总在靠近管廊节点位置处最低。这些结果可对综合管廊的消防设计与火灾防控提供参考。 |
| 英文摘要: |
| In this paper, the L-shaped utility tunnel cable cabin in a city is selected as the research object, and the FDS is used to study the influence of different fire source locations on the longitudinal temperature attenuation law of L-shaped utility tunnel cable fire, the distribution law of smoke concentration and the hazard of smoke. The research results show that the L-shaped configuration affects the continuity of the longitudinal attenuation of the maximum temperature of the utility tunnel cable fire at different fire source locations. Based on the thermal boundary layer theory, a longitudinal attenuation model of maximum temperature on a two-dimensional plane suitable for L-shaped utility tunnel is proposed. Based on the peak width time, the total smoke hazard parameters of the L-shaped utility tunnel fire are calculated, and the smoke hazard of different fire source locations is always the lowest near the node of the utility tunnel. These results can provide a reference for the fire protection design and fire prevention and control of the utility tunnel. |
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