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[1]梁本部,何平,陈云,等.考虑洪水入侵的地铁站楼梯疏散风险研究*[J].中国安全生产科学技术,2024,20(6):219-224.[doi:10.11731/j.issn.1673-193x.2024.06.030]
　LIANG Benbu,HE Ping,CHEN Yun,et al.Study on evacuation risk of subway station staircases considering flood invasion[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2024,20(6):219-224.[doi:10.11731/j.issn.1673-193x.2024.06.030]
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考虑洪水入侵的地铁站楼梯疏散风险研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
20
期数:
2024年6期
页码:
219-224
栏目:
职业安全卫生管理与技术
出版日期:
2024-06-30

文章信息/Info

Title:
Study on evacuation risk of subway station staircases considering flood invasion
文章编号:
1673-193X(2024)-06-0219-06
作者:
梁本部; 何平; 陈云; 刘姿媚
（1.武汉理工大学 法学与人文社会学院，湖北 武汉 430070；
2.武汉理工大学 管理学院，湖北 武汉 430070；
3.华中农业大学 公共管理学院，湖北 武汉 430070)
Author(s):
LIANG Benbu;  HE Ping;  CHEN Yun;  LIU Zimei
(1.School of Law,Humanities and Sociology,Wuhan University of Technology,Wuhan Hubei 430070,China;
2.School of Management,Wuhan University of Technology,Wuhan Hubei 430070,China;
3.School of Public Administration,Huazhong Agricultural University,Wuhan Hubei 430070,China)
关键词:
疏散风险; 楼梯设计; 地铁站; 洪水入侵; 模型仿真
Keywords:
evacuation risk;  staircase design;  metro station;  flood invasion;  model simulation
分类号:
X915.5
DOI:
10.11731/j.issn.1673-193x.2024.06.030
文献标志码:
A
摘要:
为增强地铁站应对洪涝灾害能力和楼梯设计韧性，基于改进的k-ε模型和洪涝疏散风险评价模型，构建地铁站楼梯上洪水入侵流态数值仿真场景，定量分析坡梯设置、楼梯倾斜度和洪水深度对洪涝疏散风险的影响。研究结果表明：在相同倾斜度（23.2°）和入侵洪水水深（0.3 m）的情况下，相较于楼梯台阶对洪水的阻缓作用，斜坡上洪水流速更快、水深更为平稳，但斜坡具有更高的洪涝疏散风险；洪涝疏散风险与楼梯倾斜度成正相关，疏散风险随着楼梯台阶的降低呈现“前快后缓”特征，斜坡对疏散风险的边际影响更为均匀，而宽大的台阶设置更有利于缓解疏散风险；楼梯上平台入口水深越大，洪涝疏散风险越高；洪水与下平台积水容易产生跳水现象，导致洪涝疏散风险急剧攀升和震荡递减。研究结果可为地铁站科学制定洪涝疏散方案和楼梯设计提供理论指导和管理启示。
Abstract:
In order to enhance the ability of metro stations to cope with flood disasters and the resilience of staircase design,based on the modified k-ε model and flood evacuation risk assessment model,a series of numerical simulation scenarios of flood invasion on the staircases in metro station were developed. Then,the influence of staircase setting,staircase inclination and flood depth on the flood evacuation risk was quantitatively analyzed. The results show that under the same inclination (23.2°) and invasion flood depth (0.3 m),the flood velocity is faster and the water depth is more stable on the slope compared to the retardation effect of staircase step on flood,but the slope has higher flood evacuation risk. The flood evacuation risk is positively correlated with the staircase inclination,and with the decrease of staircase step,the evacuation risk presents the characteristics of “fast before and slow after”. The slope has a more uniform marginal effect on the evacuation risk,and the wide step setting is more conducive to alleviate the evacuation risk. The greater the water depth at the entrance to the upper platform of staircase,the higher the flood evacuation risk. The flood and the water accumulation on the lower platform tend to produce a hydraulic jump phenomenon,leading to the sharp increase and concussed attenuation of the flood evacuation risk. The research results can provide theoretical guidance and management enlightenment for the scientific formulation of flood evacuation plan and staircase design in subway stations.

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备注/Memo

备注/Memo:
收稿日期： 2024-01-23
* 基金项目： 国家社会科学基金项目（22BFX124）；国家自然科学基金项目(72204094)；中央高校基本科研业务费专项资金项目（2024IVA077）
作者简介： 梁本部，博士，副教授，主要研究方向为应急管理与人群疏散等。
通信作者： 何平，博士，副教授，主要研究方向为风险管理、社会保障和建模仿真等。
更新日期/Last Update: 2024-06-25