Experimental study on the performance of shield tunnel tail grout in ground
Shield tail grouting is an important measure to control tunnelling-induced ground deformation by injecting prepared grouting materials to fill the tail gap. The working performance of grout is usually invisible and hard to obtain in construction. This paper carries out an experimental study to inves...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2025-02-01
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| Series: | Underground Space |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2467967424000862 |
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| author | Jiaxin Liang Wei Liu Xinsheng Yin Wentao Li Zhe Yang Jichen Yang |
| author_facet | Jiaxin Liang Wei Liu Xinsheng Yin Wentao Li Zhe Yang Jichen Yang |
| author_sort | Jiaxin Liang |
| collection | DOAJ |
| description | Shield tail grouting is an important measure to control tunnelling-induced ground deformation by injecting prepared grouting materials to fill the tail gap. The working performance of grout is usually invisible and hard to obtain in construction. This paper carries out an experimental study to investigate the tail grout behavior in ground. In the current research, a testing device is developed to explore the grout behavior in varying soils. The grout working performance is evaluated not only by the liquid grout properties such as fluidity, consistency, bleeding rate, stone rate and compressed deformation but also solid grout properties such as unconfined compressive strength and permeability. Three typical grouts are chosen and their behaviors in the various soils are observed. To take an insight on the behaviors, scanning electron microscopy and mercury intrusion porosimetry analysis are employed. The microstructure of solid grout is a sign of its working performance. The observation shows that the solid grout micro-structure is influenced by grout proportions, pressure, and ground permeabilities. The experimental results are applied in the case of Beijing Metro Line 12 for validation and as a result, the ground movement is inhibited due to high performance of tail grout. |
| format | Article |
| id | doaj-art-2f5bdb32806e40f2bf30fc59eee5ecb0 |
| institution | Kabale University |
| issn | 2467-9674 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Underground Space |
| spelling | doaj-art-2f5bdb32806e40f2bf30fc59eee5ecb02024-12-18T08:50:57ZengKeAi Communications Co., Ltd.Underground Space2467-96742025-02-0120277292Experimental study on the performance of shield tunnel tail grout in groundJiaxin Liang0Wei Liu1Xinsheng Yin2Wentao Li3Zhe Yang4Jichen Yang5College of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaSchool of Rail Transportation, Soochow University, Suzhou 215131, China; Key Laboratory of Safe Construction and Intelligent Maintenance for Urban Shield Tunnels of Zhejiang Province, Hangzhou 310015, China; Intelligent Urban Rail Engineering Research Center of Jiangsu Province, Suzhou, 215131, China; Corresponding author.Key Laboratory of Safe Construction and Intelligent Maintenance for Urban Shield Tunnels of Zhejiang Province, Hangzhou 310015, China; Department of Civil and Environmental Engineering, Hangzhou City University, Hangzhou 310015, ChinaSchool of Rail Transportation, Soochow University, Suzhou 215131, ChinaSchool of Computer Science and Technology, Zhejiang University of Technology, Hangzhou 310023, ChinaSchool of Rail Transportation, Soochow University, Suzhou 215131, ChinaShield tail grouting is an important measure to control tunnelling-induced ground deformation by injecting prepared grouting materials to fill the tail gap. The working performance of grout is usually invisible and hard to obtain in construction. This paper carries out an experimental study to investigate the tail grout behavior in ground. In the current research, a testing device is developed to explore the grout behavior in varying soils. The grout working performance is evaluated not only by the liquid grout properties such as fluidity, consistency, bleeding rate, stone rate and compressed deformation but also solid grout properties such as unconfined compressive strength and permeability. Three typical grouts are chosen and their behaviors in the various soils are observed. To take an insight on the behaviors, scanning electron microscopy and mercury intrusion porosimetry analysis are employed. The microstructure of solid grout is a sign of its working performance. The observation shows that the solid grout micro-structure is influenced by grout proportions, pressure, and ground permeabilities. The experimental results are applied in the case of Beijing Metro Line 12 for validation and as a result, the ground movement is inhibited due to high performance of tail grout.http://www.sciencedirect.com/science/article/pii/S2467967424000862Shield tunnelLab testTail grout behaviorDeformationWorking performance |
| spellingShingle | Jiaxin Liang Wei Liu Xinsheng Yin Wentao Li Zhe Yang Jichen Yang Experimental study on the performance of shield tunnel tail grout in ground Underground Space Shield tunnel Lab test Tail grout behavior Deformation Working performance |
| title | Experimental study on the performance of shield tunnel tail grout in ground |
| title_full | Experimental study on the performance of shield tunnel tail grout in ground |
| title_fullStr | Experimental study on the performance of shield tunnel tail grout in ground |
| title_full_unstemmed | Experimental study on the performance of shield tunnel tail grout in ground |
| title_short | Experimental study on the performance of shield tunnel tail grout in ground |
| title_sort | experimental study on the performance of shield tunnel tail grout in ground |
| topic | Shield tunnel Lab test Tail grout behavior Deformation Working performance |
| url | http://www.sciencedirect.com/science/article/pii/S2467967424000862 |
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