Proceedings of the 2025 8th International Conference on Traffic Transportation and Civil Architecture (ICTTCA 2025)

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Comparative Study on the Efficiency of Ventilation Joints in Gas-Rich Shield Tunnels

Authors
Hailong Li1, Qinghua Xiao1, *, Xiaofeng Xu1
1Sinohydro Engineering Bureau 3 Co., Ltd., Xi’an, China
*Corresponding author. Email: xqhbp@swjtu.edu.cn
Corresponding Author
Qinghua Xiao
Available Online 28 July 2025.
DOI
10.2991/978-94-6463-793-9_84How to use a DOI?
Keywords
gas-rich shield tunnel; ventilation system; joint efficiency; numerical simulation; system reliability
Abstract

In the construction of gas-rich tunnels, the design and performance of the ventilation system are critical to ensuring construction safety and operational efficiency. This study utilizes numerical simulation and comprehensive analysis to evaluate and compare the performance of straight joints and Y-joints, focusing on six key aspects: ventilation efficiency, system reliability, maintenance convenience, airflow stability, emergency response capability, and energy efficiency. Simulation results indicate that under specific conditions, Y-joints offer higher ventilation efficiency and better airflow capacity, making them suitable for scenarios requiring enhanced ventilation. However, straight joints exhibit advantages in terms of structural simplicity, ease of installation and maintenance, more stable airflow patterns, faster emergency switching, and lower energy consumption. The findings provide a scientific basis for selecting appropriate ventilation joint types in practical tunnel construction, supporting the optimization of ventilation system design and improving overall safety and cost-effectiveness.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2025 8th International Conference on Traffic Transportation and Civil Architecture (ICTTCA 2025)
Series
Atlantis Highlights in Engineering
Publication Date
28 July 2025
ISBN
978-94-6463-793-9
ISSN
2589-4943
DOI
10.2991/978-94-6463-793-9_84How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Hailong Li
AU  - Qinghua Xiao
AU  - Xiaofeng Xu
PY  - 2025
DA  - 2025/07/28
TI  - Comparative Study on the Efficiency of Ventilation Joints in Gas-Rich Shield Tunnels
BT  - Proceedings of the 2025 8th International Conference on Traffic Transportation and Civil Architecture (ICTTCA 2025)
PB  - Atlantis Press
SP  - 988
EP  - 994
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-793-9_84
DO  - 10.2991/978-94-6463-793-9_84
ID  - Li2025
ER  -