Experimental Study on Factors Affecting Waterproof Failure of Shield Tail Sealing System
［Objective］ Shield tail seal failure is a high risk factor in shield construction process, and shield tail sealing performance seriously affects construction safety and construction schedule. At present, the waterproof mechanism of the shield tail seal system has not yet been clarified in relevant r...
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| Format: | Article |
| Language: | zho |
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Urban Mass Transit Magazine Press
2025-04-01
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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.2025.04.045.html |
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| _version_ | 1849312241069850624 |
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| author | JIANG Peifeng |
| author_facet | JIANG Peifeng |
| author_sort | JIANG Peifeng |
| collection | DOAJ |
| description | ［Objective］ Shield tail seal failure is a high risk factor in shield construction process, and shield tail sealing performance seriously affects construction safety and construction schedule. At present, the waterproof mechanism of the shield tail seal system has not yet been clarified in relevant researches, so it is necessary to conduct targeted research on the factors affecting the failure of the shield tail seal system. ［Method］ Taking the shield tail sealing system as the research object, the test method and equipment for its waterproof failure test are independently designed. Waterproof failure characteristics of the shield tail sealing system and its important influencing factors are studied. ［Result & Conclusion］ When the waterproof function of shield tail sealing system fails, the grease near the seepage channel will emulsify; shield tail clearance, shield tail brush wire length and other parameters all have a significant impact on the waterproof failure of shield tail seal. To ensure the positive design waterproof pressure of 0.6 MPa, when the shield tail brush wire length is selected to be 175, 200, 275, and 300 mm, respectively, it is recommended that the upper limits of the shield tail clearance should not be greater than 30.0, 34.3, 37.6, and 48.8 mm, respectively; when the design shield tail clearance is 30, 40, 50 mm and above, it is recommended that the selected shield tail brush wire length is not less than 175, 275, 300 mm, respectively. |
| format | Article |
| id | doaj-art-863306ccb59f49858bb5591c59207ebb |
| institution | Kabale University |
| issn | 1007-869X |
| language | zho |
| publishDate | 2025-04-01 |
| publisher | Urban Mass Transit Magazine Press |
| record_format | Article |
| series | Chengshi guidao jiaotong yanjiu |
| spelling | doaj-art-863306ccb59f49858bb5591c59207ebb2025-08-20T03:53:07ZzhoUrban Mass Transit Magazine PressChengshi guidao jiaotong yanjiu1007-869X2025-04-0128424925310.16037/j.1007-869x.2025.04.045Experimental Study on Factors Affecting Waterproof Failure of Shield Tail Sealing SystemJIANG Peifeng0China Railway No17 Bureau Group No4 Engineering Co, Ltd, 401121, Chongqing, China［Objective］ Shield tail seal failure is a high risk factor in shield construction process, and shield tail sealing performance seriously affects construction safety and construction schedule. At present, the waterproof mechanism of the shield tail seal system has not yet been clarified in relevant researches, so it is necessary to conduct targeted research on the factors affecting the failure of the shield tail seal system. ［Method］ Taking the shield tail sealing system as the research object, the test method and equipment for its waterproof failure test are independently designed. Waterproof failure characteristics of the shield tail sealing system and its important influencing factors are studied. ［Result & Conclusion］ When the waterproof function of shield tail sealing system fails, the grease near the seepage channel will emulsify; shield tail clearance, shield tail brush wire length and other parameters all have a significant impact on the waterproof failure of shield tail seal. To ensure the positive design waterproof pressure of 0.6 MPa, when the shield tail brush wire length is selected to be 175, 200, 275, and 300 mm, respectively, it is recommended that the upper limits of the shield tail clearance should not be greater than 30.0, 34.3, 37.6, and 48.8 mm, respectively; when the design shield tail clearance is 30, 40, 50 mm and above, it is recommended that the selected shield tail brush wire length is not less than 175, 275, 300 mm, respectively.https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.2025.04.045.htmlurban rail transitshield machineshield tail waterproofsealing greaseshield tail brushshield tail clearance |
| spellingShingle | JIANG Peifeng Experimental Study on Factors Affecting Waterproof Failure of Shield Tail Sealing System Chengshi guidao jiaotong yanjiu urban rail transit shield machine shield tail waterproof sealing grease shield tail brush shield tail clearance |
| title | Experimental Study on Factors Affecting Waterproof Failure of Shield Tail Sealing System |
| title_full | Experimental Study on Factors Affecting Waterproof Failure of Shield Tail Sealing System |
| title_fullStr | Experimental Study on Factors Affecting Waterproof Failure of Shield Tail Sealing System |
| title_full_unstemmed | Experimental Study on Factors Affecting Waterproof Failure of Shield Tail Sealing System |
| title_short | Experimental Study on Factors Affecting Waterproof Failure of Shield Tail Sealing System |
| title_sort | experimental study on factors affecting waterproof failure of shield tail sealing system |
| topic | urban rail transit shield machine shield tail waterproof sealing grease shield tail brush shield tail clearance |
| url | https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.2025.04.045.html |
| work_keys_str_mv | AT jiangpeifeng experimentalstudyonfactorsaffectingwaterprooffailureofshieldtailsealingsystem |