| Issue |
E3S Web of Conf.
Volume 536, 2024
2024 6th International Conference on Environmental Prevention and Pollution Control Technologies (EPPCT 2024)
|
|
|---|---|---|
| Article Number | 01024 | |
| Number of page(s) | 5 | |
| Section | Environmental Planning Management and Ecological Construction | |
| DOI | https://doi.org/10.1051/e3sconf/202453601024 | |
| Published online | 10 June 2024 | |
Study on the influence of cross-section shape on the characteristics of wind flow field in heavy-daty railway tunnel
1 Department of Safety Science and Engineering, Qingdao University of Technology, Qingdao 266520, China
2 Transportation Management Department, Guoneng Baoshen Railway Group Co, Ltd, Baotou 014010, China
3 Production Technology Department, China Shenhua Energy Co, Ltd, Shenshuo Railway Branch, Yulin 719316, China
* Corresponding author: zhanyousa@163.com
In order to reduce the coal dust pollution when the heavy train enters the tunnel and to ensure the safety of railroad operation, this paper adopts numerical simulation to study the characteristics of the wind flow field of the heavy train passing through different shapes of tunnels. The results show that the shape of the tunnel section has a significant effect on the piston wind characteristics of the train entering the tunnel. When the train passes through the tunnel, the value of the wind pressure and the gradient of the pressure on the surface of the carriages increase from horseshoe shape, high wall shape and high arch shape. The vortex structure generated at the entrance of the horseshoe tunnel is the smallest and the flow field is more stable, and the wind turbulence shows significant weakening effect; when the rear end of the car enters the tunnel, the range of the influence of the piston winds outside the tunnel is in order of smallest to largest for the horseshoe, high wall, and high arch tunnels; in the wake region, the central region of the strong vorticity zone in the horseshoe tunnel is more continuous, reducing the instability of the airflow in the tunnel. The results of this study are of great significance in understanding the characteristics of the wind flow field and the effect on dust generation when heavy trains pass through the tunnel.
© The Authors, published by EDP Sciences, 2024
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