Hazards of Waterproof Board Cutting Secondary Lining in Operating Tunnel and Remediation Schemes
Objective With the acceleration of tunnel construction in China, various diseases in operating tunnels become increasingly prominent. Despite of many in-depth researches by scholars on various diseases, that on the hazards of waterproof board cutting secondary lining is still insufficient. Therefore...
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| Format: | Article |
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Urban Mass Transit Magazine Press
2024-10-01
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| Series: | Chengshi guidao jiaotong yanjiu |
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| Online Access: | https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.2024.10.018.html |
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| author | SHI Yunfei GONG Xingwang YU Zhenqi GONG Lun LIU Zelin CUI Xiaoti |
| author_facet | SHI Yunfei GONG Xingwang YU Zhenqi GONG Lun LIU Zelin CUI Xiaoti |
| author_sort | SHI Yunfei |
| collection | DOAJ |
| description | Objective With the acceleration of tunnel construction in China, various diseases in operating tunnels become increasingly prominent. Despite of many in-depth researches by scholars on various diseases, that on the hazards of waterproof board cutting secondary lining is still insufficient. Therefore, it is necessary to deeply explore the secondary lining cutting hazard in operating tunnels and propose effective remediation schemes. Method Based on the waterproofing and force mechanism of waterproof boards, numerical simulation technology is used to systematically study the secondary lining cutting hazard in operating tunnels. Focusing on the waterproof board arch bending moment, the Mises stress and the lining displacement under different circumferential and longitudinal cutting lengths, the changing law of their key indicators are emphatically analyzed. On this basis, a new remediation design scheme is proposed, and the rationality-superiority of the remediation design scheme is verified by comparing the changes in the lining structure vault displacement before and after the waterproof board remediation. Result & Conclusion With the increase in the circumferential and longitudinal cutting lengths of the waterproof board, the arch bending moment, the lining stress and displacement all show a significant growth trend. In particular, the longitudinal cutting length of the waterproof board has a more significant impact on the three indicators such as lining displacement. Through comprehensively analyzing the sudden change areas of bending moment, stress and displacement, it is found that when the waterproof board circumferential and longitudinal cutting lengths are in the range of 2~3 m, the impact on stress and deformation of the lining structure is most unfavorable. |
| format | Article |
| id | doaj-art-dda0756daea14cd7bf5f9f40304edc9a |
| institution | OA Journals |
| issn | 1007-869X |
| language | zho |
| publishDate | 2024-10-01 |
| publisher | Urban Mass Transit Magazine Press |
| record_format | Article |
| series | Chengshi guidao jiaotong yanjiu |
| spelling | doaj-art-dda0756daea14cd7bf5f9f40304edc9a2025-08-20T02:17:00ZzhoUrban Mass Transit Magazine PressChengshi guidao jiaotong yanjiu1007-869X2024-10-01271011011510.16037/j.1007-869x.2024.10.018Hazards of Waterproof Board Cutting Secondary Lining in Operating Tunnel and Remediation SchemesSHI Yunfei0GONG Xingwang1YU Zhenqi2GONG Lun3LIU Zelin4CUI Xiaoti5Shanxi Vocational University of Engineering Science and Technology , 030619, Jinzhong, ChinaSchool of Civil Engineering, Southwest Jiaotong University, 610031, Chengdu, ChinaNational Pipeline Network Group Construction Project Management Branch, 065000, Langfang, ChinaSchool of Civil Engineering, Southwest Jiaotong University, 610031, Chengdu, ChinaNanning Association for Artificial Intelligence, 530000, Nanning, ChinaNanning Association for Artificial Intelligence, 530000, Nanning, ChinaObjective With the acceleration of tunnel construction in China, various diseases in operating tunnels become increasingly prominent. Despite of many in-depth researches by scholars on various diseases, that on the hazards of waterproof board cutting secondary lining is still insufficient. Therefore, it is necessary to deeply explore the secondary lining cutting hazard in operating tunnels and propose effective remediation schemes. Method Based on the waterproofing and force mechanism of waterproof boards, numerical simulation technology is used to systematically study the secondary lining cutting hazard in operating tunnels. Focusing on the waterproof board arch bending moment, the Mises stress and the lining displacement under different circumferential and longitudinal cutting lengths, the changing law of their key indicators are emphatically analyzed. On this basis, a new remediation design scheme is proposed, and the rationality-superiority of the remediation design scheme is verified by comparing the changes in the lining structure vault displacement before and after the waterproof board remediation. Result & Conclusion With the increase in the circumferential and longitudinal cutting lengths of the waterproof board, the arch bending moment, the lining stress and displacement all show a significant growth trend. In particular, the longitudinal cutting length of the waterproof board has a more significant impact on the three indicators such as lining displacement. Through comprehensively analyzing the sudden change areas of bending moment, stress and displacement, it is found that when the waterproof board circumferential and longitudinal cutting lengths are in the range of 2~3 m, the impact on stress and deformation of the lining structure is most unfavorable.https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.2024.10.018.htmloperating tunnelwaterproof board cuttingcircumferential and longitudinal lengthnumerical simulationremediation scheme |
| spellingShingle | SHI Yunfei GONG Xingwang YU Zhenqi GONG Lun LIU Zelin CUI Xiaoti Hazards of Waterproof Board Cutting Secondary Lining in Operating Tunnel and Remediation Schemes Chengshi guidao jiaotong yanjiu operating tunnel waterproof board cutting circumferential and longitudinal length numerical simulation remediation scheme |
| title | Hazards of Waterproof Board Cutting Secondary Lining in Operating Tunnel and Remediation Schemes |
| title_full | Hazards of Waterproof Board Cutting Secondary Lining in Operating Tunnel and Remediation Schemes |
| title_fullStr | Hazards of Waterproof Board Cutting Secondary Lining in Operating Tunnel and Remediation Schemes |
| title_full_unstemmed | Hazards of Waterproof Board Cutting Secondary Lining in Operating Tunnel and Remediation Schemes |
| title_short | Hazards of Waterproof Board Cutting Secondary Lining in Operating Tunnel and Remediation Schemes |
| title_sort | hazards of waterproof board cutting secondary lining in operating tunnel and remediation schemes |
| topic | operating tunnel waterproof board cutting circumferential and longitudinal length numerical simulation remediation scheme |
| url | https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.2024.10.018.html |
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