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

In 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. (A) Reprinted with permission from Elsevier.

  • Authors:
    • HISTAKE, M
    • OHNO, S
    • KATAYAMA, T
    • OHMAE, Y
    • SANO, S
  • Publication Date: 2009-9

Language

  • English

Media Info

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Filing Info

  • Accession Number: 01146984
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Dec 24 2009 8:35AM