Chapter
Mar 23, 2023
Actual and Predicted Earth Pressure Balance Tunnel Boring Machine-Induced Ground Deformation in Washington, DC: Stiff Clays and Dense Sands
Authors: Michael A. Mooney, Ph.D., M.ASCE [email protected], Haotian Zheng, and Benjamin RizziAuthor Affiliations
Publication: Geo-Congress 2023
ABSTRACT
This paper presents a detailed analysis of ground deformation that occurred during earth pressure balance tunnel boring machine (EPBM) construction through cohesive and cohesionless soils in Washington, DC. Settlements of 25 mm were observed during the first 1,000 m of tunneling, whereafter, settlements reduced to nearly 0 mm for the next 1,000 m. EPBM data suggests shield annulus and tailshield grouting as the cause of the settlement. 3D computational model results, using TBM parameters, matched well with observed settlement.
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REFERENCES
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Gangrade, R. 2021. Quantifying spatial geotechnical uncertainty to advance the practice of risk assessment and decision-making in tunnel projects. Colorado School of Mines.
Mooney, M. A., Grasmick, J., Kenneally, B., and Fang, Y. 2016. The role of slurry TBM parameters on ground deformation: Field results and computational modelling. Tunn. Undergr. Space Technol. 57, 257–264. https://doi.org/10.1016/j.tust.2016.01.007.
Peck, R. B. Deep excavation and tunneling in soft ground/ 7th Intl. Congress of Soil Mechanics and Foundation Engineering, State of the Art Report, 63 p.
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Geo-Congress 2023
Pages: 248 - 256
History
Published online: Mar 23, 2023
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P.E.
1Grewcock Chair Professor, Dept. of Civil Engineering, Colorado School of Mines, Golden, CO. ORCID: https://orcid.org/0000-0001-9063-1209. Email: [email protected]
Haotian Zheng
1Grewcock Chair Professor, Dept. of Civil Engineering, Colorado School of Mines, Golden, CO. ORCID: https://orcid.org/0000-0001-9063-1209. Email: [email protected]
Benjamin Rizzi
1Grewcock Chair Professor, Dept. of Civil Engineering, Colorado School of Mines, Golden, CO. ORCID: https://orcid.org/0000-0001-9063-1209. Email: [email protected]
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