A discrete numerical approach for modeling face stability in slurry shield tunnelling in soft soils

Autor:	X.Y. Hu, Kieffer D. Scott, Zixin Zhang
Rok vydání:	2011
Předmět:	Engineering Computer simulation business.industry Excavation Structural engineering Geotechnical Engineering and Engineering Geology Stability (probability) Computer Science Applications Shield Face (geometry) Soil water Slurry Geotechnical engineering business Quantum tunnelling
Zdroj:	Computers and Geotechnics. 38:94-104
ISSN:	0266-352X
DOI:	10.1016/j.compgeo.2010.10.011
Popis:	In this paper, a numerical simulation method for evaluating tunnelling-induced ground movement is presented. The method involves discrete element simulation of TBM slurry shield advancement and considers explicitly soil excavation from the face, effects of varying face support pressure, and the influence of tunnel cover depth. For the cases studied, it is found that for tunnel cover depths (C/D) between 0.7 and 2.1, ground deformations inducing by the tunnelling can be controlled within a certain extent and tunnel face stability can ensured, provided the support pressure ratio (N) lies between 0.8 and 1.5. The proposed method is reasonably benefited to modeling the face stability in shield-driven tunnels in soft soils.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5753870cc9714a965086296e74824382 https://doi.org/10.1016/j.compgeo.2010.10.011 Zobrazit plný text záznamu Full Text from ScienceDirect