| Issue |
E3S Web Conf.
Volume 598, 2024
2024 9th International Conference on Advances in Energy and Environment Research (ICAEER 2024)
|
|
|---|---|---|
| Article Number | 02001 | |
| Number of page(s) | 8 | |
| Section | Research on Technology and Environmental Issues from a Multidisciplinary Perspective | |
| DOI | https://doi.org/10.1051/e3sconf/202459802001 | |
| Published online | 27 November 2024 | |
Study on Wind Effect of Train Piston in Railway Tunnel with High Altitude and High Rock Temperature
Shenyang Jianzhu University, Shenyang 110168, China
* Corresponding author: fengguohui888@163.com
The piston wind effect in the tunnel of the Sichuan-Tibet railway under high rock temperature and low-pressure environment was studied and analyzed to provide theoretical support for the tunnel’s thermal environment analysis and ventilation design. The calculation model of piston wind for trains running under low pressure is established, and the influence of atmospheric pressure and tunnel wall temperature on the piston wind effect in the tunnel is increased. By comparing the impact of different factors on the piston wind effect in the tunnel, the fitting rule function between train speed and piston wind speed is obtained. The results show that atmospheric pressure and tunnel wall temperature have little influence on the piston wind effect in the tunnel and can be ignored. Natural ventilation and train speed significantly influence the piston wind effect in the tunnel. Reasonable use of natural ventilation and train speed control can effectively reduce the piston wind effect, reduce the heat accumulation in the tunnel, and ensure the safety and comfort of the tunnel.
© The Authors, published by EDP Sciences, 2024
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