Monitoring and Data Analyses of Pressure Changes and Ground Settlements Induced by Slurry TBM Tunneling in a Semiconfined Aquifer: Case Study in the Netherlands.
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| Title: | Monitoring and Data Analyses of Pressure Changes and Ground Settlements Induced by Slurry TBM Tunneling in a Semiconfined Aquifer: Case Study in the Netherlands. |
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| Authors: | Xu, Tao1 (AUTHOR) taoxu-hit@hotmail.com, Bezuijen, Adam2 (AUTHOR) adam.bezuijen@ugent.be |
| Source: | Journal of Geotechnical & Geoenvironmental Engineering. Dec2024, Vol. 150 Issue 12, p1-11. 11p. |
| Subjects: | Sustainable construction, Grouting, Water pressure, Aquifers, Tunnel design & construction |
| Abstract: | This paper presents the field monitoring during construction of the Green Heart Tunnel driven by a slurry tunnel boring machine (TBM) in a semiconfined aquifer in which a sand layer was overlaid by a peat layer. Data analyses of the pore-water pressures, slurry pressures, tail-void grout pressures, and ground movements surrounding the tunnel are presented. It was found that the slurry infiltration controls the variation of pore-water pressure only close to the tunnel face. The excess pore-water pressure far from the tunnel face was induced by the elastic storage of the aquifer. It was found that the grouting had little influence on the pore-pressure distribution. Furthermore, because the excess pore-water pressure generated by slurry infiltration might contribute to the grout pressure, the measured value of grout pressure can be smaller than the actual value. Consequently, to obtain the actual value of grout pressure, grout-pressure gauges combined with the pore-pressure transducers should be installed. In the semiconfined aquifer, suction in the overlying peat layer could be induced when the TBM passed through the sand layer. For this condition, the ground movement proportionally increased with the decreasing water pressure. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Geotechnical & Geoenvironmental Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 180266620 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Monitoring and Data Analyses of Pressure Changes and Ground Settlements Induced by Slurry TBM Tunneling in a Semiconfined Aquifer: Case Study in the Netherlands. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Xu%2C+Tao%22">Xu, Tao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> taoxu-hit@hotmail.com</i><br /><searchLink fieldCode="AR" term="%22Bezuijen%2C+Adam%22">Bezuijen, Adam</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> adam.bezuijen@ugent.be</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Geotechnical+%26+Geoenvironmental+Engineering%22">Journal of Geotechnical & Geoenvironmental Engineering</searchLink>. Dec2024, Vol. 150 Issue 12, p1-11. 11p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Sustainable+construction%22">Sustainable construction</searchLink><br /><searchLink fieldCode="DE" term="%22Grouting%22">Grouting</searchLink><br /><searchLink fieldCode="DE" term="%22Water+pressure%22">Water pressure</searchLink><br /><searchLink fieldCode="DE" term="%22Aquifers%22">Aquifers</searchLink><br /><searchLink fieldCode="DE" term="%22Tunnel+design+%26+construction%22">Tunnel design & construction</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This paper presents the field monitoring during construction of the Green Heart Tunnel driven by a slurry tunnel boring machine (TBM) in a semiconfined aquifer in which a sand layer was overlaid by a peat layer. Data analyses of the pore-water pressures, slurry pressures, tail-void grout pressures, and ground movements surrounding the tunnel are presented. It was found that the slurry infiltration controls the variation of pore-water pressure only close to the tunnel face. The excess pore-water pressure far from the tunnel face was induced by the elastic storage of the aquifer. It was found that the grouting had little influence on the pore-pressure distribution. Furthermore, because the excess pore-water pressure generated by slurry infiltration might contribute to the grout pressure, the measured value of grout pressure can be smaller than the actual value. Consequently, to obtain the actual value of grout pressure, grout-pressure gauges combined with the pore-pressure transducers should be installed. In the semiconfined aquifer, suction in the overlying peat layer could be induced when the TBM passed through the sand layer. For this condition, the ground movement proportionally increased with the decreasing water pressure. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Geotechnical & Geoenvironmental Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1061/JGGEFK.GTENG-12434 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 1 Subjects: – SubjectFull: Sustainable construction Type: general – SubjectFull: Grouting Type: general – SubjectFull: Water pressure Type: general – SubjectFull: Aquifers Type: general – SubjectFull: Tunnel design & construction Type: general Titles: – TitleFull: Monitoring and Data Analyses of Pressure Changes and Ground Settlements Induced by Slurry TBM Tunneling in a Semiconfined Aquifer: Case Study in the Netherlands. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Xu, Tao – PersonEntity: Name: NameFull: Bezuijen, Adam IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 12 Text: Dec2024 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 10900241 Numbering: – Type: volume Value: 150 – Type: issue Value: 12 Titles: – TitleFull: Journal of Geotechnical & Geoenvironmental Engineering Type: main |
| ResultId | 1 |
