Theoretical solution and failure analysis of water pressure on lining of deep-buried non-circular hydraulic tunnel based on the equivalent hydraulic radius method
文献类型：期刊论文
| 作者 | Duan, Shuqian1,2; Jiang, Xiqing1; Jiang, Quan3; Xiong, Jiecheng1; Li, Chenyang2,4 |
| 刊名 | ENGINEERING FAILURE ANALYSIS
 |
| 出版日期 | 2023-06-01 |
| 卷号 | 148期号:-页码:- |
| ISSN号 | 1350-6307 |
| 关键词 | Non -circular hydraulic tunnel Water pressure Seepage discharges Equivalent hydraulic radius method Failure analysis Permeability coefficient Conformal mapping |
| 英文摘要 | The water pressure distribution acting on non-circular hydraulic tunnels have always been an important and crucial issue in deep-buried tunnels and caverns, due to its complexity, variability and potential threats to the stability of surrounding rock and the safety of lining structure. This research proposes an accurate axisymmetric analytical solution for water pressure and seepage discharge on the surface of surrounding rock, the lining and grouting circle under high external and internal water pressures, by introducing an equivalent hydraulic radius method in to seepage theory in fractured media. Then, the distribution law of seepage pressure within different dis-tances from the tunnel wall is derived by theoretical analysis. The accuracy, superiority and applicability of the theoretical solution based on the equivalent hydraulic radius are verified sufficiently. The maximum errors of the theoretical solution are less than 15%, 18% and 5.98% respectively, when compared to the numerical solution, the in-situ water pressure monitoring data and the theoretical solution based on the conformal mapping. And the proposed theoretical solution is much closer to the numerical solution than the existing equivalent methods. Moreover, parameters of each part of the composite lining are optimized. Increasing 10% of the original of the permeability coefficient of the composite lining can maximally reduce the external water pressure, and the maximum principal stress and displacement of the composite lining can be effectively reduced by comparing the contour of the maximum principal stress and displacement before and after parameter optimization. Furthermore, by comparing the excavation damage zone distribution before and after parameter optimization, the shear failure occurring in the composite lining is significantly reduced, and the stability of the composite lining structure can be improved. The conclusions could provide important guiding theoretical value for the further study of water pressure distribution acting on non-circular hydraulic tunnels as well as for the correct grouting and drainage designs. |
| 学科主题 | Engineering ; Materials Science |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000957737200001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35291]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.School of Civil Engineering, Zhengzhou University, Zhengzhou, Henan 450001, China 2.Henan Urban Planning Institute and Corporation, Zhengzhou 450044, China 3.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 4.College of Geography and Environmental Science, Henan University, Kaifeng 475004, China |
| 推荐引用方式 GB/T 7714 | Duan, Shuqian,Jiang, Xiqing,Jiang, Quan,et al. Theoretical solution and failure analysis of water pressure on lining of deep-buried non-circular hydraulic tunnel based on the equivalent hydraulic radius method[J]. ENGINEERING FAILURE ANALYSIS,2023,148(-):-. |
| APA | Duan, Shuqian,Jiang, Xiqing,Jiang, Quan,Xiong, Jiecheng,&Li, Chenyang.(2023).Theoretical solution and failure analysis of water pressure on lining of deep-buried non-circular hydraulic tunnel based on the equivalent hydraulic radius method.ENGINEERING FAILURE ANALYSIS,148(-),-. |
| MLA | Duan, Shuqian,et al."Theoretical solution and failure analysis of water pressure on lining of deep-buried non-circular hydraulic tunnel based on the equivalent hydraulic radius method".ENGINEERING FAILURE ANALYSIS 148.-(2023):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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