Prediction of Surface Deformation Induced by Ultra-Shallow-Buried Pilot Tunnel Construction
The prediction of ground deformation during ultra-shallow-buried pilot tunnel construction is critical for urban rail transit projects in complex geological settings, yet existing cross-section models often lack accuracy. This study proposes an enhanced non-uniform convergence model based on stochas...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/15/13/7546 |
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| author | Caijun Liu Xiangdong Li Yang Yang Xing Gao Yupeng Shen Peng Jing |
| author_facet | Caijun Liu Xiangdong Li Yang Yang Xing Gao Yupeng Shen Peng Jing |
| author_sort | Caijun Liu |
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| description | The prediction of ground deformation during ultra-shallow-buried pilot tunnel construction is critical for urban rail transit projects in complex geological settings, yet existing cross-section models often lack accuracy. This study proposes an enhanced non-uniform convergence model based on stochastic medium theory, which decomposes surface settlement into uniform soil shrinkage and non-uniform initial support deformation. A computational formula for horseshoe-shaped sections is derived and validated through field data from Kunming Rail Transit Phase I, demonstrating a 59% improvement in maximum settlement prediction accuracy (reducing error from 7.5 mm to 3.1 mm) compared to traditional methods. Its application to Beijing Metro Line 13 reveals two distinct deformation patterns: significant ground heave occurs at 2.5 times the tunnel width from the centerline, while maximum settlement concentrates above the excavation center and diminishes radially. To mitigate heave, early strengthening of the secondary lining is recommended to control initial horizontal deformation. These findings enhance prediction reliability and provide actionable insights for deformation control in similar urban tunneling projects, particularly under ultra-shallow burial conditions. |
| format | Article |
| id | doaj-art-ff5aed72480240a3ac3fa07b8122023d |
| institution | Kabale University |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-ff5aed72480240a3ac3fa07b8122023d2025-08-20T03:50:16ZengMDPI AGApplied Sciences2076-34172025-07-011513754610.3390/app15137546Prediction of Surface Deformation Induced by Ultra-Shallow-Buried Pilot Tunnel ConstructionCaijun Liu0Xiangdong Li1Yang Yang2Xing Gao3Yupeng Shen4Peng Jing5China Railway First Group Second Engineering Co., Ltd., Tangshan 063000, ChinaChina Railway First Group Second Engineering Co., Ltd., Tangshan 063000, ChinaChina Railway First Group Second Engineering Co., Ltd., Tangshan 063000, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaThe prediction of ground deformation during ultra-shallow-buried pilot tunnel construction is critical for urban rail transit projects in complex geological settings, yet existing cross-section models often lack accuracy. This study proposes an enhanced non-uniform convergence model based on stochastic medium theory, which decomposes surface settlement into uniform soil shrinkage and non-uniform initial support deformation. A computational formula for horseshoe-shaped sections is derived and validated through field data from Kunming Rail Transit Phase I, demonstrating a 59% improvement in maximum settlement prediction accuracy (reducing error from 7.5 mm to 3.1 mm) compared to traditional methods. Its application to Beijing Metro Line 13 reveals two distinct deformation patterns: significant ground heave occurs at 2.5 times the tunnel width from the centerline, while maximum settlement concentrates above the excavation center and diminishes radially. To mitigate heave, early strengthening of the secondary lining is recommended to control initial horizontal deformation. These findings enhance prediction reliability and provide actionable insights for deformation control in similar urban tunneling projects, particularly under ultra-shallow burial conditions.https://www.mdpi.com/2076-3417/15/13/7546non-uniform convergence modelstochastic medium theoryultra-shallow-buried tunnelsurface settlement prediction |
| spellingShingle | Caijun Liu Xiangdong Li Yang Yang Xing Gao Yupeng Shen Peng Jing Prediction of Surface Deformation Induced by Ultra-Shallow-Buried Pilot Tunnel Construction Applied Sciences non-uniform convergence model stochastic medium theory ultra-shallow-buried tunnel surface settlement prediction |
| title | Prediction of Surface Deformation Induced by Ultra-Shallow-Buried Pilot Tunnel Construction |
| title_full | Prediction of Surface Deformation Induced by Ultra-Shallow-Buried Pilot Tunnel Construction |
| title_fullStr | Prediction of Surface Deformation Induced by Ultra-Shallow-Buried Pilot Tunnel Construction |
| title_full_unstemmed | Prediction of Surface Deformation Induced by Ultra-Shallow-Buried Pilot Tunnel Construction |
| title_short | Prediction of Surface Deformation Induced by Ultra-Shallow-Buried Pilot Tunnel Construction |
| title_sort | prediction of surface deformation induced by ultra shallow buried pilot tunnel construction |
| topic | non-uniform convergence model stochastic medium theory ultra-shallow-buried tunnel surface settlement prediction |
| url | https://www.mdpi.com/2076-3417/15/13/7546 |
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