列车运行参数和迂回隧道参数对地铁车站轨行区迂回隧道通风效果的影响规律
高伟1王方敏1田婷婷2余涛2
Influence Laws of Train Operation Parameters and Bypass Tunnel Parameters on Bypass Tunnel Ventilation Effect in Subway Station Track Zone
GAO Wei1WANG Fangmin1TIAN Tingting2YU Tao2
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作者信息:1.中国电建集团华东勘测设计研究院有限公司， 311122， 杭州
2.西南交通大学机械工程学院， 610031， 成都
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Affiliation:1.Power China Huadong Engineering Co., Ltd., 311122, Hangzhou, China
2.School of Mechanical Engineering, Southwest Jiaotong University, 610031, Chengdu, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2025.04.020
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中图分类号/CLCN:U231.5
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栏目/Col:研究报告
摘要:
［目的］受空间限制，部分地铁车站活塞风井设置在车站轨行区内，并采用迂回隧道将风井与轨行区外侧正线隧道相连。有必要研究列车运行参数和迂回隧道参数对迂回隧道通风效果的影响规律。［方法］建立了包含迂回隧道的某线路一维隧道通风网络模型，模拟分析了不同行车对数、行车速度和迂回隧道长度下迂回隧道的通风效果。［结果及结论］当有迂回隧道时，行车对数和列车速度的增加均能有效提高隧道活塞风量。迂回隧道位于进站端时，隧道活塞风量最大变化值随行车对数和列车速度分别增加5.2 m3/s和5.1 m3/s；迂回隧道位于出站端时，隧道活塞风量最大变化值随行车对数和列车速度分别增加11.8 m3/s和16.7 m3/s，说明迂回隧道位于出站端时隧道活塞风量受影响更大。迂回隧道位于出站端时，隧道空气温度下降更显著，随行车对数和列车速度增加，隧道空气最高温降值分别增加1.6 ℃和3.5 ℃。迂回隧道长度的变化对隧道风量和空气温度变化影响不大，迂回隧道长度为18 m时隧道热环境最优。
Abstracts:
［Objective］ Due to space constraints, some subway station piston ventilation shafts are set up in the station track zones, and a bypass tunnel is used for connecting the ventilation shaft to the main line tunnel outside the track zone. It is necessary to study the influence laws of train operation parameters and bypass tunnel parameters on the ventilation effect of the bypass tunnel. ［Method］ A one-dimensional tunnel ventilation network model of a certain line with bypass tunnel is established, and the ventilation effect of the bypass tunnel under different train pair numbers, train velocities and bypass tunnel lengths is simulated and analyzed. ［Result & Conclusion］ When there is a bypass tunnel, the increase in train pair numbers and train speed can both effectively improve the tunnel piston air volume. When the bypass tunnel is located at the train entrance end, the maximum change value of the tunnel piston air volume increases by 5.2 m3/s and 5.1 m3/s respectively with the increase of train pair numbers and train speed. When the bypass tunnel is located at the exit end, the maximum change value of the tunnel piston air volume increases with train pair numbers and train speed by 11.8 m3/s and 16.7 m3/s respectively, indicating that tunnel piston air volume is more affected in the latter case. When the bypass tunnel is located at the exit end, the tunnel air temperature drops more significantly, and the maximum temperature drop of the tunnel air increases by 1.6 ℃ and 3.5 ℃, respectively, with the increase in train pair numbers and train speed. Changes in bypass tunnel lengths have little effect on the changes in tunnel air volume and air temperature, and the tunnel thermal environment reaches best with a bypass tunnel length of 18 m.
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