Applicability of the Convergence-Confinement Method to Full-Face Excavation of Circular Tunnels with Stiff Support System

Autor: Jean Sulem, Manuel De La Fuente, Reza Taherzadeh, Didier Subrin, Xuan-Son Nguyen
Přispěvatelé: Laboratoire de mécanique des sols, structures et matériaux (MSSMat), CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Géotechnique (cermes), Laboratoire Navier (navier umr 8205), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement - Direction Centre-Est (Cerema Direction Centre-Est), Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement (Cerema), Laboratoire Navier (NAVIER UMR 8205), École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel, Tractebel Engineering SA, Centre d'Etudes des Tunnels (CETU)
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Computer science
Tunneling
Computation
Ground- 40
Strong interaction
0211 other engineering and technologies
02 engineering and technology
010502 geochemistry & geophysics
01 natural sciences
Single shield TBM
Simple (abstract algebra)
Convergence (routing)
[PHYS.MECA.SOLID]Physics [physics]/Mechanics [physics]/Solid mechanics [physics.class-ph]
Range (statistics)
Rock mass classification
ComputingMilieux_MISCELLANEOUS
Quantum tunnelling
021101 geological & geomatics engineering
0105 earth and related environmental sciences
Civil and Structural Engineering
business.industry
[SPI.GCIV.GEOTECH]Engineering Sciences [physics]/Civil Engineering/Géotechnique
Geology
Structural engineering
Geotechnical Engineering and Engineering Geology
Convergence-confinement method
Face (geometry)
Ground- lining interaction
business
Zdroj: Rock Mechanics and Rock Engineering
Rock Mechanics and Rock Engineering, Springer Verlag, 2019, 52 (7), pp.2361-2376. ⟨10.1007/s00603-018-1694-8⟩
ISSN: 0723-2632
1434-453X
DOI: 10.1007/s00603-018-1694-8⟩
Popis: International audience; 22 23 The ConVergence-ConFinement (CV-CF) method is widely used in conventional tunneling at 24 a preliminary stage of the design. In this method, the rock-support interaction is simplified by 25 means of a two-dimensional plane-strain assumption. However, when the ground exhibits large 26 deformation and/or when the support is very stiff and installed close to the tunnel face, the 27 results obtained with the CV-CF method may significantly differ from those obtained using 3D 28 numerical computations. The strong interaction taking place between the rigid lining and the 29 rock mass is not considered in the most common use of the CV-CF method. Some 30 improvements of the CV-CF method as the so-called implicit methods have been developed in 31 order to better account for this interaction. 32 In this paper, the applicability of the CV-CF methods is discussed for full face excavation 33 tunneling with a stiff support system. An in-depth comparison between plane-strain closed form 34 solutions and numerical results which properly accounts for the 3D effects at the vicinity of the 35 tunnel face is carried out. The range of application of the different approaches of the CV-CF 36 method is discussed. Finally, some simple empirical formula which can be used in preliminary 37 design for a large range of ground conditions are proposed. 38 39
Databáze: OpenAIRE
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