Influence of Foliation Orientation on Tunnel Behavior

Wulf Schubert, Juan Manuel Davila Mendez

Research output: Contribution to journalArticleResearchpeer-review

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.

Original languageEnglish
Pages (from-to)880-885
Number of pages6
JournalProcedia engineering
Volume191
Issue number191
DOIs
Publication statusPublished - 2017
Event2017 ISRM European Rock Mechanics Symposium: HUMAN ACTIVITY IN ROCK MASSES - Ostrava, Ostrava, Czech Republic
Duration: 20 Jun 201722 Jun 2017
https://www.eurock2017.com/
https://www.eurock2017.com

Fingerprint

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

Keywords

    ASJC Scopus subject areas

    • Engineering(all)

    Fields of Expertise

    • Sustainable Systems

    Cite this

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

    In: Procedia engineering , Vol. 191, No. 191, 2017, p. 880-885.

    Research output: Contribution to journalArticleResearchpeer-review

    Schubert, Wulf ; Mendez, Juan Manuel Davila. / Influence of Foliation Orientation on Tunnel Behavior. In: Procedia engineering . 2017 ; Vol. 191, No. 191. pp. 880-885.
    @article{6a582beca2e2498e9a5c2992f0924aa3,
    title = "Influence of Foliation Orientation on Tunnel Behavior",
    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.",
    keywords = "tunnel behaviour, foliation orientation, displacement characteristics",
    author = "Wulf Schubert and Mendez, {Juan Manuel Davila}",
    year = "2017",
    doi = "10.1016/j.proeng.2017.05.257",
    language = "English",
    volume = "191",
    pages = "880--885",
    journal = "Procedia engineering",
    issn = "1877-7058",
    publisher = "Elsevier B.V.",
    number = "191",

    }

    TY - JOUR

    T1 - Influence of Foliation Orientation on Tunnel Behavior

    AU - Schubert, Wulf

    AU - Mendez, Juan Manuel Davila

    PY - 2017

    Y1 - 2017

    N2 - 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.

    AB - 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.

    KW - tunnel behaviour, foliation orientation, displacement characteristics

    UR - http://www.scopus.com/inward/record.url?scp=85021954210&partnerID=8YFLogxK

    U2 - 10.1016/j.proeng.2017.05.257

    DO - 10.1016/j.proeng.2017.05.257

    M3 - Article

    VL - 191

    SP - 880

    EP - 885

    JO - Procedia engineering

    JF - Procedia engineering

    SN - 1877-7058

    IS - 191

    ER -