ESTIMATE OF THE LOOSENED AND PLASTICALLY DEFORMED AREA AROUND THE OPENING

The magnitude of pressure acting on supports around a tunnel opening depends on the loosened area around the opening. To determine the depth of the loosened area, seismic tests were conducted in the tunnel. The depth depends on the geology of the area to be excavated. The geological conditions can be determined by a seismic survey which is seen as useful in tunnel design.

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  • Corporate Authors:

    JAPANESE NATIONAL RAILWAYS

    TOKYO,   Japan 
  • Authors:
    • Ikeda, K
    • SAKURAI, T
    • Asano, G
    • Higuchi, I
  • Publication Date: 1975-9

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Subject/Index Terms

Filing Info

  • Accession Number: 00129864
  • Record Type: Publication
  • Source Agency: JAPANESE NATIONAL RAILWAYS
  • Report/Paper Numbers: Quart Rpt.
  • Files: TRIS
  • Created Date: Mar 10 1976 12:00AM