Use of underground space is increasing rapidly, and many young designers are becoming involved, for the first time, with sub-surface tunnelled works. This paper draws attention to the unusually close relationship in tunnelling that exists between temporary and permanent works, noting particularly that the former cannot usually be reclaimed and often, for reasons of space or economy, have to be incorporated within the premanent structure. The temporary support must therefore be compatible with the permanent works. Design is generally carried out using empirical rules, based on previous experience and taking account of safety both in the tunnel and of adjacent property. Permanent works design, by careful attention to form, can benefit from the underground environment, while recognizing the problems inherent in the difficult working conditions. The choice of materials is largely dictated by their durability in order to limit maintenance to a minimum during the life of the structure.

  • Availability:
  • Corporate Authors:

    Institution of Structural Engineers

    11 Upper Belgrave Street
    London,   United Kingdom  SW1X 8BH
  • Authors:
    • HULME, T W
  • Publication Date: 1979-5

Media Info

  • Features: Figures; Photos; References;
  • Pagination: p. 147-152
  • Serial:
    • Structural Engineer
    • Volume: 57A
    • Issue Number: 5
    • Publisher: Institution of Structural Engineers
    • ISSN: 1466-5123

Subject/Index Terms

Filing Info

  • Accession Number: 00302136
  • Record Type: Publication
  • Source Agency: British Railways
  • Files: TRIS
  • Created Date: Dec 19 1979 12:00AM