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Tunnelling in tectonic melanges—accommodating the impacts of geomechanical complexities and anisotropic rock mass fabrics

Button, E. / Riedmüller, G. / Schubert, W. / Klima, K. / Medley, E.

Abstract Experiences from the construction of two shallow tunnels through a thrust melange are discussed. It is shown that complex geological environments, such as a rectonic melange zone, require continuous geological and geotechnical characterisation, as well as state of the art monitoring, to comprehend the details of the melange’s internal block/matrix structure and the effects on the excavation. The acquired data are used to determine the appropriate key parameters that sufficiently describe the expected rock mass behaviour. The paper discusses how the evaluation of three-dimensional displacement data, combined with a continuous geological characterisation, allows the optimisation of a tunnel construction in a tectonic melange.

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Tunnelling in tectonic melanges—accommodating the impacts of geomechanical complexities and anisotropic rock mass fabrics

Button, E. / Riedmüller, G. / Schubert, W. / Klima, K. / Medley, E.

Abstract Experiences from the construction of two shallow tunnels through a thrust melange are discussed. It is shown that complex geological environments, such as a rectonic melange zone, require continuous geological and geotechnical characterisation, as well as state of the art monitoring, to comprehend the details of the melange’s internal block/matrix structure and the effects on the excavation. The acquired data are used to determine the appropriate key parameters that sufficiently describe the expected rock mass behaviour. The paper discusses how the evaluation of three-dimensional displacement data, combined with a continuous geological characterisation, allows the optimisation of a tunnel construction in a tectonic melange.

Tunnelling in tectonic melanges—accommodating the impacts of geomechanical complexities and anisotropic rock mass fabrics

Button, E. / Riedmüller, G. / Schubert, W. / Klima, K. / Medley, E.

Abstract Experiences from the construction of two shallow tunnels through a thrust melange are discussed. It is shown that complex geological environments, such as a rectonic melange zone, require continuous geological and geotechnical characterisation, as well as state of the art monitoring, to comprehend the details of the melange’s internal block/matrix structure and the effects on the excavation. The acquired data are used to determine the appropriate key parameters that sufficiently describe the expected rock mass behaviour. The paper discusses how the evaluation of three-dimensional displacement data, combined with a continuous geological characterisation, allows the optimisation of a tunnel construction in a tectonic melange.

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Title:

Tunnelling in tectonic melanges—accommodating the impacts of geomechanical complexities and anisotropic rock mass fabrics

Contributors:

Button, E. (author) / Riedmüller, G. (author) / Schubert, W. (author) / Klima, K. (author) / Medley, E. (author)

Published in:

Bulletin of Engineering Geology and the Environment ; 63

Publication date:

2004

ISSN:

DOI:

https://doi.org/10.1007/s10064-003-0220-7

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Umweltforschung , Ingenieurgeologie

Classification:

BKL: 38.58 Geomechanik / 56.20 Ingenieurgeologie, Bodenmechanik

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