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Effects of the ring-cut excavation method on the restraint of displacements ahead of a tunnel face

Hisatake, M. / Ohno, S. / Katayama, T. / Ohmae, Y. / Sano, S.

AbstractIn order to clarify the effects of the ring-cut excavation method on the restraint of ground displacements and on the increase in tunnel face stability, centrifugal model experiments and 3-D elasto-plastic finite element analyses are conducted. A robot, which is controlled by computer programs, is employed to excavate the ground arbitrarily in three dimensions under a centrifugal loading state. The displacements in the ground ahead of the face and the stability of the face are compared using two methods, namely, the full-face excavation method and the ring-cut excavation method, and the quantitative effects of the ring-cut excavation method are described.

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Effects of the ring-cut excavation method on the restraint of displacements ahead of a tunnel face

Hisatake, M. / Ohno, S. / Katayama, T. / Ohmae, Y. / Sano, S.

AbstractIn order to clarify the effects of the ring-cut excavation method on the restraint of ground displacements and on the increase in tunnel face stability, centrifugal model experiments and 3-D elasto-plastic finite element analyses are conducted. A robot, which is controlled by computer programs, is employed to excavate the ground arbitrarily in three dimensions under a centrifugal loading state. The displacements in the ground ahead of the face and the stability of the face are compared using two methods, namely, the full-face excavation method and the ring-cut excavation method, and the quantitative effects of the ring-cut excavation method are described.

Effects of the ring-cut excavation method on the restraint of displacements ahead of a tunnel face

Hisatake, M. / Ohno, S. / Katayama, T. / Ohmae, Y. / Sano, S.

AbstractIn order to clarify the effects of the ring-cut excavation method on the restraint of ground displacements and on the increase in tunnel face stability, centrifugal model experiments and 3-D elasto-plastic finite element analyses are conducted. A robot, which is controlled by computer programs, is employed to excavate the ground arbitrarily in three dimensions under a centrifugal loading state. The displacements in the ground ahead of the face and the stability of the face are compared using two methods, namely, the full-face excavation method and the ring-cut excavation method, and the quantitative effects of the ring-cut excavation method are described.

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Title:

Effects of the ring-cut excavation method on the restraint of displacements ahead of a tunnel face

Contributors:

Hisatake, M. (author) / Ohno, S. (author) / Katayama, T. (author) / Ohmae, Y. (author) / Sano, S. (author)

Published in:

Tunnelling and Underground Space Technology ; 24 ; 547-554

Publication date:

2009-02-14

Size:

8 pages

ISSN:

DOI:

https://doi.org/10.1016/j.tust.2009.02.003

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Centrifugal model experiments , Ring-cut excavation method , Full-face excavation method , Subsidence , Tunnel axial displacement , Excavation robot

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