NON-DESTRUCTIVE TESTING OF FIRED TUNNEL WALLS: THE MONT-BLANC TUNNEL CASE STUDY

The investigation of fired tunnel walls typically relies on visual inspection and a comprehensive study of core samples. Visual inspection is limited to surface diagnosis, while core samples only provide a detailed image of the damaged zone at a single point. In order to gain an extensive view of the entire depth of the damaged zone as well as specific material properties, both the seismic refraction method and ground-penetrating radar investigation may be carried out. In the case of the Mont-Blanc Tunnel, these non-destructive methods have been tested in there zones: heavily damaged, moderately damaged, and sound. On the radargrams generated, several layers can be roughly identified; seismic refraction then confirms and characterises the existence of layers with contrasting mechanical properties. (A)

  • Availability:
  • Corporate Authors:

    Elsevier

    The Boulevard, Langford Lane
    Kidlington, Oxford  United Kingdom  OX5 1GB
  • Authors:
    • Derobert, X
    • Abraham, O
  • Publication Date: 2003-9

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 411-8
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00963900
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Oct 3 2003 12:00AM