Influence of confined water on the limit support pressure of tunnel face in weakly water-rich strata
文献类型：期刊论文
| 作者 | Li, Yun-fa1,2; Wu, Guo-jun2; Chen, Wei-zhong2; Yuan, Jing-qiang2; Huo, Meng-zhe1,2 |
| 刊名 | JOURNAL OF CENTRAL SOUTH UNIVERSITY
 |
| 出版日期 | 2024-08-01 |
| 卷号 | 31期号:8页码:2844-2859 |
| 关键词 | weakly water-rich strata confined aquifer limit support pressure finite element method multiple linear regression |
| ISSN号 | 2095-2899 |
| DOI | 10.1007/s11771-024-5715-3 |
| 英文摘要 | In the process of shield tunneling through soft soil layers, the presence of confined water ahead poses a significant threat to the stability of the tunnel face. Therefore, it is crucial to consider the impact of confined water on the limit support pressure of the tunnel face. This study employed the finite element method (FEM) to analyze the limit support pressure of shield tunnel face instability within a pressurized water-containing layer. Subsequently, a multiple linear regression approach was applied to derive a concise solution formula for the limit support pressure, incorporating various influencing factors. The analysis yields the following conclusions: 1) The influence of confined water on the instability mode of the tunnel face in soft soil layers makes the displacement response of the strata not significant when the face is unstable; 2) The limit support pressure increases approximately linearly with the pressure head, shield tunnel diameter, and tunnel burial depth. And inversely proportional to the thickness of the impermeable layer, soil cohesion and internal friction angle; 3) Through an engineering case study analysis, the results align well with those obtained from traditional theoretical methods, thereby validating the rationality of the equations proposed in this paper. Furthermore, the proposed equations overcome the limitation of traditional theoretical approaches considering the influence of changes in impermeable layer thickness. It can accurately depict the dynamic variation in the required limit support pressure to maintain the stability of the tunnel face during shield tunneling, thus better reflecting engineering reality. |
| 资助项目 | Key Deployment Projects of Chinese Academy of Sciences[ZDRW-ZS-2021-3] ; National Natural Science Foundation of China[52179116] ; National Natural Science Foundation of China[51991392] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001338961200020 |
| 出版者 | JOURNAL OF CENTRAL SOUTH UNIV |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42893]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wu, Guo-jun |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yun-fa,Wu, Guo-jun,Chen, Wei-zhong,et al. Influence of confined water on the limit support pressure of tunnel face in weakly water-rich strata[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY,2024,31(8):2844-2859. |
| APA | Li, Yun-fa,Wu, Guo-jun,Chen, Wei-zhong,Yuan, Jing-qiang,&Huo, Meng-zhe.(2024).Influence of confined water on the limit support pressure of tunnel face in weakly water-rich strata.JOURNAL OF CENTRAL SOUTH UNIVERSITY,31(8),2844-2859. |
| MLA | Li, Yun-fa,et al."Influence of confined water on the limit support pressure of tunnel face in weakly water-rich strata".JOURNAL OF CENTRAL SOUTH UNIVERSITY 31.8(2024):2844-2859. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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