Influence of Foliation Orientation on Tunnel Behavior

Wulf Schubert, Juan Manuel Davila Mendez

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Abstract

The relative orientation of foliation or closely spaced bedding has an important influence on the behavior of underground structures. Not only the potential failure mode is controlled by the relative orientation between underground opening and foliation strike, but also the longitudinal development of the displacements. Case histories and numerical simulations have shown that the magnitude of the displacements can differ almost by an order of magnitude for cases where the strike is parallel and perpendicular to the tunnel axis respectively. The reason is the usually low shear strength parallel to the foliation, which can lead to shearing or buckling failure modes. The knowledge of the influence of the relative foliation orientation on the mechanical behavior of the ground is extremely important for excavation and support design. The paper will show the results of numerical simulations, as well as monitoring data from tunnels in foliated rocks. Recommendations for excavation and support strategies are given.

Originalspracheenglisch
Seiten (von - bis)880-885
Seitenumfang6
FachzeitschriftProcedia engineering
Jahrgang191
Ausgabenummer191
DOIs
PublikationsstatusVeröffentlicht - 2017
Veranstaltung2017 ISRM European Rock Mechanics Symposium: HUMAN ACTIVITY IN ROCK MASSES - Ostrava, Ostrava, Tschechische Republik
Dauer: 20 Jun 201722 Jun 2017
https://www.eurock2017.com/
https://www.eurock2017.com

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Excavation
Failure modes
Tunnels
Underground structures
Computer simulation
Shearing
Shear strength
Buckling
Rocks
Monitoring

Schlagwörter

  • tunnel behaviour, foliation orientation, displacement characteristics

ASJC Scopus subject areas

  • !!Engineering(all)

Fields of Expertise

  • Sustainable Systems

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Influence of Foliation Orientation on Tunnel Behavior. / Schubert, Wulf; Mendez, Juan Manuel Davila.

in: Procedia engineering , Jahrgang 191, Nr. 191, 2017, S. 880-885.

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Schubert, Wulf ; Mendez, Juan Manuel Davila. / Influence of Foliation Orientation on Tunnel Behavior. in: Procedia engineering . 2017 ; Jahrgang 191, Nr. 191. S. 880-885.
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