Proceedings of the 2024 8th International Conference on Civil Architecture and Structural Engineering (ICCASE 2024)

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Determination of Optimal Support Timing for Pumped Storage Power Station Tunnels Based on Displacement Release Rate

Authors
Yingzi Wu2, Xi Chen3, Rongtian Zhang1, *, Yanbing Wang4
1College of Electrical and New Energy, China Three Gorges University, Yichang, China
2State Grid Hubei Electric Power Co., Wuhan, China
3Economic and Technical Research Institute of State Grid Hubei Electric Power Co, Wuhan, China
4State Grid Economic and Technical Research Institute Co., Beijing, China
*Corresponding author. Email: 806825116@qq.com
Corresponding Author
Rongtian Zhang
Available Online 30 June 2024.
DOI
10.2991/978-94-6463-449-5_29How to use a DOI?
Keywords
Displacement release rate; support timing; perimeter rock displacement; perimeter rock; pumped storage power plant
Abstract

The optimal timing of support is difficult to determine due to the excavation of the tunnel. This paper proposes a method for determining the optimal support timing of pumped storage power station tunnels based on the displacement release rate, using the indicator of the distance between the support and the palm face as a judgment of the support timing, and when the excavation load release rate reaches a certain value during the excavation process, the peripheral rock displacement increment will have a steep increase in the point of the excavation load release rate to reach the time of the excavation load release rate to determine the time of the optimal timing of the initial support. This method can maximize the self-supporting capacity of the surrounding rock and minimize the support load. Three-dimensional modeling simulation is used to apply this method as an example.

Copyright
© 2024 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 2024 8th International Conference on Civil Architecture and Structural Engineering (ICCASE 2024)
Series
Atlantis Highlights in Engineering
Publication Date
30 June 2024
ISBN
978-94-6463-449-5
ISSN
2589-4943
DOI
10.2991/978-94-6463-449-5_29How to use a DOI?
Copyright
© 2024 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  - Yingzi Wu
AU  - Xi Chen
AU  - Rongtian Zhang
AU  - Yanbing Wang
PY  - 2024
DA  - 2024/06/30
TI  - Determination of Optimal Support Timing for Pumped Storage Power Station Tunnels Based on Displacement Release Rate
BT  - Proceedings of the 2024 8th International Conference on Civil Architecture and Structural Engineering (ICCASE 2024)
PB  - Atlantis Press
SP  - 306
EP  - 314
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-449-5_29
DO  - 10.2991/978-94-6463-449-5_29
ID  - Wu2024
ER  -