
Open access
Datum
2016-07Typ
- Journal Article
Abstract
This paper presents a finite strain theoretical analysis of the ground response around highly deformed circular tunnel cross sections that are subjected to (repeated) re-profiling in order to re-establish the desired clearance. Plane strain axially symmetric conditions are considered, with linearly elastic, perfectly or brittle plastic rock behaviour according to the non-associated Mohr–Coulomb model. On the basis of this theoretical analysis, some practical questions are addressed with respect to the ground response curve, the maximum rock pressure (as carried by a practically rigid new temporary support) and the maximum wall convergence (as expected in the presence of a light new support) after re-profiling. Finally, the paper revisits the question of the effectiveness of a pilot tunnel with respect to the ground response during enlargement of the tunnel cross section. Mehr anzeigen
Persistenter Link
https://doi.org/10.3929/ethz-b-000114534Publikationsstatus
publishedExterne Links
Zeitschrift / Serie
Rock Mechanics and Rock EngineeringBand
Seiten / Artikelnummer
Verlag
SpringerThema
Large deformations; Re-mining; Rock pressure; Squeezing; Tunnel convergenceOrganisationseinheit
03655 - Anagnostou, Georgios (emeritus) / Anagnostou, Georgios (emeritus)
02607 - Institut für Geotechnik / Institute for Geotechnical Engineering
Anmerkungen
It was possible to publish this article open access thanks to a Swiss National Licence with the publisher.