主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2023, Vol. 41 ›› Issue (5): 648-651.

• • 上一篇    下一篇

隧道洞口大跨度全封闭声屏障自然排烟效率研究

张丽莎1, 邹琦1, 何小龙1, 姜学鹏2   

  1. （1. 中国市政工程中南设计研究总院有限公司 隧道与地下空间所，湖北 武汉 430010；2. 武汉科技大学消防安全技术研究所，湖北 武汉 430081）
  • 出版日期:2023-05-29 发布日期:2023-05-29
  • 作者简介:张丽莎（1987- ），湖北荆州人，中国市政工程中南设计研究总院有限公司暖通工程师，主要从事隧道、地铁、综合管廊等工程暖通设计工作，湖北省武汉市江岸区解放公园路8号，430010。
  • 基金资助:
    国家自然科学基金项目（51874213）；湖北省重点研发计划项目（2020BCB072）

Study on natural smoke exhaust efficiency of large-span fully enclosed sound barrier at tunnel portal

Zhang Lisha1, Zou Qi1, He Xiaolong1, Jiang Xuepeng2   

  1. (1. Tunneling and Underground Space Center, Central and Southern China Municipal Design & Research Institude Co.,Ltd., Hubei Wuhan 430010, China; 2. Fire Safety Technology Institute, Wuhan University of Science and Technology, Hubei Wuhan 430081, China)
  • Online:2023-05-29 Published:2023-05-29

摘要： 为明确大跨度全封闭声屏障侧部排烟的可行性，得到易熔采光带开口率对设置侧部自然排烟口声屏障排烟效率影响规律，采用缩尺寸模型试验和数值模拟方法研究了最不利排烟车道（F车道）、常年环境风、最不利环境风（3 m/s）和易熔采光带开口率等场景下声屏障自然排烟效率。结果表明：侧部自然排烟口能保证烟气的有效排出；常年环境风和易熔采光带开口率对声屏障排烟效率无太大影响，最不利环境风会大幅降低声屏障排烟效率，设置采光带可以减弱这个影响；推荐易熔采光带开口率为10%左右。

关键词: 全封闭声屏障, 易熔采光带, 自然排烟, 数值模拟, 隧道火灾

Abstract: In order to make clear the feasibility of side smoke exhaust of large-span full-enclosed noise barrier, the influence rule of the opening rate of fusible daylighting zone on the smoke exhaust efficiency of side natural smoke outlet noise barrier was obtained, the natural smoke exhaust efficiency of noise barrier in the scene of the most unfavorable exhaust lane (F Lane), the perennial ambient wind, the most unfavorable ambient wind(3 m/s) and the opening rate of fusible daylighting zone was studied by using scaled model experiment and numerical simulation method. The results show that the side natural smoke outlet can ensure the effective exhaust of smoke; the perennial environmental wind and the opening rate of fusible daylighting zone have little influence on the smoke exhaust efficiency of the noise barrier, and the most unfavorable environmental wind can greatly reduce the smoke exhaust efficiency of the noise barrier, this effect can be reduced by setting daylighting zone; the recommended opening rate of fusible daylighting zone is about 10%.

Key words: totally enclosed sound barrier, fusible daylighting belt, smoke vent, numerical simulation, tunnel fire