| 田向亮,钟茂华,刘畅,史聪灵.细水雾抑制隧道甲醇火灾的全尺寸实验研究[J].火灾科学,2019,28(1):35-41. |
| 细水雾抑制隧道甲醇火灾的全尺寸实验研究 |
| Full-scale tunnel experimental study on suppressing methanol fire using water mist |
| |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| DOI：10.3969/j.issn.1004-5309.2019.01.05 |
| 基金项目:国家重点研发计划项目(2016YFC0802500) ；国家自然科学基金项目(51425404, 51674152, 51774067) |
| 作者 | 单位 | | 田向亮 | 清华大学工程物理系公共安全研究院, 北京,100084
东北大学资源与土木工程学院, 沈阳,110819
| | 钟茂华 | 清华大学工程物理系公共安全研究院, 北京,100084 | | 刘畅 | 东北大学资源与土木工程学院, 沈阳,110819
| | 史聪灵 | 中国安全生产科学研究院交通安全研究所, 北京,100012 |
|
| 中文关键词: 隧道火灾 细水雾 纵向通风 自然通风 隧道温度分布 能见度 |
| 英文关键词:Tunnel fire Water mist Longitudinal ventilation Natural ventilation Tunnel temperature profile Visibility |
| 摘要点击次数: 218 |
| 全文下载次数: 675 |
| 中文摘要: |
| 针对难以迅速扑灭的隧道甲醇火灾场景, 在截面积9.14 m2, 长38 m的全尺寸隧道内开展了一系列实验, 研究了不同通风条件下多喷头细水雾系统对隧道甲醇火灾的抑制作用。 通过分析火源周围温度分布、火源下风向隧道温度分布及隧道能见度等参数, 综合评估了通风条件下细水雾系统抑制隧道火灾的效果。 结果表明: 纵向通风降低隧道温度的同时易引起人眼高度处温度升高; 细水雾能迅速控制火灾发展并有效降低隧道温度, 但细水雾雾滴的扩散与沉降易造成隧道能见度的下降。 在本文条件下, 风速为4.98 m/s的纵向通风和10 MPa 压力下的6喷头细水雾系统共同作用能够有效降低火源周围温度和隧道温度, 并显著提高隧道能见度。 |
| 英文摘要: |
| A series of experiments were carried out in a full-scale tunnel (with a cross-sectional area of 9.14 m2 and length of 32 m) to study the suppression effects of water mist system. In experiments, a water mist system with multiple nozzles was used on tunnel methanol fire with ventilation, for which the temperature profile of the fire source area, the tunnel temperature profile and the visibility of the tunnel at the downwind of fire were analyzed. The results show that the longitudinal ventilation could effectively reduce the tunnel temperature, but it is easy to cause the temperature rising at eye level. Water mist could quickly control the fire and effectively reduce the tunnel temperature, but the tunnel visibility would decrease due to the diffusion and subsidence of water mist. Combined use of longitudinal ventilation and water mist could effectively reduce the temperature around the fire source and the tunnel temperature, and markedly improve the tunnel visibility. |
| 关闭 |
|
|
|
