Influence Laws of Train Operation Parameters and Bypass Tunnel Parameters on Bypass Tunnel Ventilation Effect in Subway Station Track Zone
［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 p...
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Urban Mass Transit Magazine Press
2025-04-01
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| Series: | Chengshi guidao jiaotong yanjiu |
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| Online Access: | https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.2025.04.020.html |
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| author | GAO Wei WANG Fangmin TIAN Tingting YU Tao |
| author_facet | GAO Wei WANG Fangmin TIAN Tingting YU Tao |
| author_sort | GAO Wei |
| collection | DOAJ |
| description | ［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. |
| format | Article |
| id | doaj-art-fe1b2901829b41e099d3ccc5640c0eef |
| institution | Kabale University |
| issn | 1007-869X |
| language | zho |
| publishDate | 2025-04-01 |
| publisher | Urban Mass Transit Magazine Press |
| record_format | Article |
| series | Chengshi guidao jiaotong yanjiu |
| spelling | doaj-art-fe1b2901829b41e099d3ccc5640c0eef2025-08-20T03:53:07ZzhoUrban Mass Transit Magazine PressChengshi guidao jiaotong yanjiu1007-869X2025-04-0128410410910.16037/j.1007-869x.2025.04.020Influence Laws of Train Operation Parameters and Bypass Tunnel Parameters on Bypass Tunnel Ventilation Effect in Subway Station Track ZoneGAO Wei0WANG Fangmin1TIAN Tingting2YU Tao3Power China Huadong Engineering Co., Ltd., 311122, Hangzhou, ChinaPower China Huadong Engineering Co., Ltd., 311122, Hangzhou, ChinaSchool of Mechanical Engineering, Southwest Jiaotong University, 610031, Chengdu, ChinaSchool of Mechanical Engineering, Southwest Jiaotong University, 610031, Chengdu, China［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.https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.2025.04.020.htmlsubway stationtunnel ventilationbypass tunnelventilation effect |
| spellingShingle | GAO Wei WANG Fangmin TIAN Tingting YU Tao Influence Laws of Train Operation Parameters and Bypass Tunnel Parameters on Bypass Tunnel Ventilation Effect in Subway Station Track Zone Chengshi guidao jiaotong yanjiu subway station tunnel ventilation bypass tunnel ventilation effect |
| title | Influence Laws of Train Operation Parameters and Bypass Tunnel Parameters on Bypass Tunnel Ventilation Effect in Subway Station Track Zone |
| title_full | Influence Laws of Train Operation Parameters and Bypass Tunnel Parameters on Bypass Tunnel Ventilation Effect in Subway Station Track Zone |
| title_fullStr | Influence Laws of Train Operation Parameters and Bypass Tunnel Parameters on Bypass Tunnel Ventilation Effect in Subway Station Track Zone |
| title_full_unstemmed | Influence Laws of Train Operation Parameters and Bypass Tunnel Parameters on Bypass Tunnel Ventilation Effect in Subway Station Track Zone |
| title_short | Influence Laws of Train Operation Parameters and Bypass Tunnel Parameters on Bypass Tunnel Ventilation Effect in Subway Station Track Zone |
| title_sort | influence laws of train operation parameters and bypass tunnel parameters on bypass tunnel ventilation effect in subway station track zone |
| topic | subway station tunnel ventilation bypass tunnel ventilation effect |
| url | https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.2025.04.020.html |
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