[1]钱超,赵一辰,孙茂贵,等.单洞四车道公路隧道人行横通道安全间距研究[J].长安大学学报(自然科学版),2025,45(5):81-91.[doi:10.19721/j.cnki.1671-8879.2025.05.007]
　QIAN Chao,ZHAO Yi-chen,SUN Mao-gui,et al.Study on safety distance of pedestrian cross passages in single-tube four-lane highway tunnels[J].Journal of Chang’an University (Natural Science Edition),2025,45(5):81-91.[doi:10.19721/j.cnki.1671-8879.2025.05.007]
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单洞四车道公路隧道人行横通道安全间距研究()
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长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
第45卷
期数:
2025年5期
页码:
81-91
栏目:
桥梁与隧道工程
出版日期:
2025-09-30

文章信息/Info

Title:
Study on safety distance of pedestrian cross passages in single-tube four-lane highway tunnels
文章编号:
1671-8879(2025)05-0081-11
作者:
钱超1; 赵一辰1; 孙茂贵1; 陈建勋2; 罗彦斌2; 李卓3
(1. 长安大学 电子与控制工程学院,陕西 西安 710064; 2. 长安大学 公路学院,陕西 西安 710064; 3. 中交第一公路勘察设计研究院有限公司,陕西 西安 710075)
Author(s):
QIAN Chao1;  ZHAO Yi-chen1;  SUN Mao-gui1;  CHEN Jian-xun2;  LUO Yan-bin2;  LI Zhuo3
(1. School of Electronic and Control Engineering, Chang'an University, Xi'an 710064, Shaanxi, China; 2. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 3. CCCC First Highway Consultants Co., Ltd., Xi'an 710075, Shaanxi, China)
关键词:
隧道工程;  人行横通道;  间距设计;  隧道断面形状;  单洞四车道隧道
Keywords:
tunnel engineering;  pedestrian cross passage;  distance setting;  cross-sectional shape;  single-tube four-lane tunnel
分类号:
U45
DOI:
10.19721/j.cnki.1671-8879.2025.05.007
文献标志码:
A
摘要:
针对单洞四车道矩形断面和拱形断面公路隧道开展人行横通道安全间距研究,分析2类隧道发生50 MW规模火灾时烟尘浓度、温度、CO浓度和能见度分布差异,量化隧道断面形状对可用疏散时间的影响,并提出合理的人行横通道安全间距设置方案。研究结果表明:矩形断面隧道在火灾发生后,烟尘浓度上升较快,温度和CO浓度增加较为显著,能见度衰减也较快; 拱形断面隧道由于其结构特性,建筑限界外的隧道拱顶部分有更大的蓄烟空间,使得在相同水平高度下,烟尘浓度、温度和CO浓度的增长速度较为缓慢,尤其能见度衰减至安全疏散临界值相对较慢,有效延长了可用疏散时间,因而人员疏散环境整体占优; 为保证隧道内人员在火灾工况下的安全疏散,应结合不同隧道断面形状设置人行横通道安全间距,建议单洞四车道矩形断面隧道人行横通道安全间距不应大于240 m,拱形断面隧道不应大于300 m; 单洞四车道公路隧道设计目前是相关规范的空白,应结合隧道断面形状、火灾规模及车道数等参数开展人行横通道安全间距设置研究,可为相关工程设计及防灾救援提供技术支撑。
Abstract:
The safety distance of pedestrian cross passages in single-tube four-lane rectangular and arch-shaped highway tunnels was investigated. The differences in smoke concentration, temperature, carbon monoxide(CO)concentration, and visibility distribution were analyzed for a 50 MW fire in these two tunnel types. The impact of tunnel cross-section shape on the available safe escape time(ASET)was quantified, and a reasonable safety distance setting scheme for pedestrian cross passages was proposed. The results show that in rectangular cross-section tunnels, smoke concentration rises rapidly in a fire temperature and CO concentration significantly increase, while visibility declines quickly. In contrast, due to their structural characteristics, arch-shaped tunnels have a larger smoke storage space beyond the structural boundary, resulting in slower growth rates of smoke concentration, temperature, and CO concentration at the same horizontal height. Notably, visibility declines to the threshold for safe evacuation relatively slow, effectively extending the ASET and resulting in an overall superior evacuation environment. To ensure safe evacuation of personnel in the tunnel under fire conditions, the safety distance for pedestrian cross passages should be set in conjunction with tunnel cross-section shape. It is recommended that the safety distance in single-tube four-lane rectangular tunnels should not exceed 240 m, while in arch-shaped tunnels, it should not exceed 300 m. Currently, there are no provisions in relevant specifications for single-tube four-lane highway tunnel design. Research on pedestrian cross passages safety distances should consider tunnel cross-section shape, fire scale, and lane count, providing technical support for engineering design, disaster prevention, and rescue operation.6 tabs, 13 figs, 28 refs.

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备注/Memo

备注/Memo:
收稿日期:2025-02-26
基金项目:国家重点研发计划项目(2018YFB1600100); 甘肃省科技重点研发计划项目(22YF11GA299)
作者简介:钱 超(1984-),男,江苏新沂人,副教授,工学博士,E-mail:qianchao@chd.edu.cn。
通信作者:陈建勋(1969-),男,陕西韩城人,教授,博士研究生导师,工学博士,E-mail:chenjx1969@chd.edu.cn。
更新日期/Last Update: 2025-09-30