RECENT TENDENCIES OF DETERIORATION IN TUNNEL

The author notes that deterioration in tunnels is mostly due to the unexpected occurrence of bad geological conditions, but points out also that it can be due to lack of care in tunnel design and construction. After examining a number of tunnels where deformation has occurred during operation, the author discusses how such deformation develops, and lists four causes: deformation of tunnel lining, tunnel movement, enlargement of the space behind the lining due to the outflow of sandy materials, and flaking off of the lining.

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  • Corporate Authors:

    JAPANESE NATIONAL RAILWAYS

    TOKYO,   Japan 
  • Authors:
    • SHIRAI, K
  • Publication Date: 1977-12

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00179264
  • Record Type: Publication
  • Source Agency: International Union of Railways
  • Report/Paper Numbers: Rpt No. 1029-77
  • Files: TRIS
  • Created Date: Aug 19 1978 12:00AM