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| Research on the Calculation Method for Deformation Pressure of TBM Tunnel in Squeezing Ground |
| LI Zhijun, WANG Mingnian, WANG Zhilong, YU Li, JIANG Zhiyi, ZHANG Xiao, SHANGGUAN Yuwen |
| Southwest Jiaotoug University, Chengdu, Sichuan 610031, China |
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Abstract Research purposes: At present, research on double shield TBM is mainly focused on equipment selection and construction technology under squeezing geological conditions both domestically and internationally. However, there is relatively little research on the design of pipe segment structures. In order to make up for the lack of research in this area, based on the temporal and spatial effects of TBM tunnel construction, the focus was on the calculation method of deformation pressure of double shield TBM tunnel segments in squeezing ground.
Research conclusions: (1) By using a genetic creep model, the temporal effects of surrounding rock deformation were simulated and integrated into the longitudinal deformation curve of the tunnel, thus forming a method for calculating the longitudinal deformation curve of the tunnel that takes into account the temporal and spatial effects. In addition, the advanced deformation in the first stage was also considered and a formula for the characteristic curve of surrounding rock was constructed based on the equivalent excavation diameter. (2) Using the elastic theory of thick walled cylinders, a stiffness calculation formula for pipe segment gravel composite support was derived, and an expression for calculating the critical elastic modulus was established. (3) Based on the principle of convergence constraint analysis, the formulas for the combined support force and displacement were derived, further forming a calculation method for the deformation pressure of pipe segments. Finally, the accuracy of the deformation pressure calculation method was verified through practical engineering cases. (4) The research result can be applied to the design of TBM tunnel segment structure in squeezing ground.
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Received: 02 January 2024
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| [1] |
李凤远,曾垂刚. 全断面隧道掘进机智能制造与运维发展现状及趋势[J]. 隧道建设(中英文), 2023(S1): 6-13.Li Fengyuan, Zeng Chuigang.Development Status and Trend of Intelligent Manufacturing Operation and Maintenance for Full-Face Tunnel Boring Machine[J]. Tunnel Construction, 2023(S1): 6-13.
|
| [2] |
徐鹏祖,杨延栋,徐海峰,等. TBM法隧道仰拱同步现浇施工技术与装备研制[J]. 隧道建设(中英文), 2023(S1): 480-486.Xu Pengzu, Yang Yandong, Xu Haifeng, etc. Synchronous Cast-in-Place Construction Technology and Equipment Development for TBM Tunnel Invert Arch[J]. Tunnel Construction, 2023(S1): 480-486.
|
| [3] |
刘国庆. 复杂地质条件下敞开式TBM若干设计问题的探讨[J]. 铁道工程学报, 2023(8): 80-85.Liu Guoqing.Exploration of Some Design Issues of Open-type TBM under Complex Geological Conditions[J]. Journal of Railway Engineering Society, 2023(8): 80-85.
|
| [4] |
Liu Q, Huang X, Gong Q, etc. Application and Development of Hard Rock TBM and Its Prospect in China[J]. Tunnelling & Underground Space Technology, 2016, 57:33-46.
|
| [5] |
姜志毅. 高地应力挤压性地层双护盾TBM管片结构设计方法研究[D].成都:西南交通大学,2017.Jiang Zhiyi.Research on the Design Method of Double Shield TBM Pipe Segment Structure in High Ground Stress Compressive Strata[D]. Chengdu:Southwest Jiaotong University, 2017.
|
| [6] |
TB 10003—2016,铁路隧道设计规范[S].TB 10003—2016,Code for Design of Railway Tunnel[S].
|
| [7] |
姜志毅. 高地应力挤压性地层双护盾TBM管片结构设计方法研究[D]. 成都:西南交通大学,2017.Jiang Zhiyi.Research on the Design Method of Double Shield TBM Pipe Segment Structure in High Ground Stress Compressive Strata[D]. Chengdu:Southwest Jiaotong University, 2017.
|
| [8] |
温森, 徐卫亚. 洞室变形引起的双护盾TBM施工事故风险分析[J]. 岩石力学与工程学报, 2011(S1):3060-3065.Wen Sen, Xu Weiya.Risk Analysis of Double Shield TBM Construction Accident Induced by Tunnel Deformation[J]. Chinese Journal of Rock Mechanics and Engineering, 2011 (S1): 3060-3065.
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2024, Vol. 41 
