PREVENTION IS BETTER THAN CURE

Conditions for the 3.5 km long Aalesund-Ellingsoey and 4.2 km long Ellingsoey-Valderoey subsea road tunnels on the West coast of Norway have mainly been as expected from the pre-investigations. Refraction seismic profiles indicated the location of the major weakness zones and faults; systematic probe drilling during construction on the subsea sections, and partly under land, has given warning of water leakages into the tunnel and stability problems. This has allowed efficient pregrouting to reduce water leakage and necessary rock reinforcement and support to take place in a flexible routine. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0041414X
• Corporate Authors:

  Morgan-Grampian (Construction Press) Limited

  Morgan-Grampian House, 30 Calderwood Street
  London SE18 6QH,   England 
• Authors:
  • Olsen, A B
  • Blindheim, O T
• Publication Date: 1989-3

Media Info

• Features: References;
• Pagination: p. 41-44
• Serial:
  • Tunnels & Tunnelling International
  • Volume: 21
  • Issue Number: 3
  • Publisher: Progressive Media Markets, Ltd
  • ISSN: 0041-414X

Subject/Index Terms

• TRT Terms: Construction; Detection and identification; Detectors; Faults; Geology; Grout; Location; Refraction; Rocks; Stability (Mechanics); Tunnels; Underwater construction; Underwater structures
• Uncontrolled Terms: Injection; Site investigation
• Geographic Terms: Norway
• ITRD Terms: 3655: Construction; 9006: Continuous; 9115: Detection; 3674: Equipment; 5520: Failure; 4068: Fault (geomorphol); 4053: Geology; 4729: Grout; 3617: Injection (mater); 9061: Location; 3847: Maintenance; 8078: Netherlands; 8084: Norway; 9149: Prevention; 1062: Railway track; 6788: Refraction; 4154: Rock; 5722: Site investigation; 5930: Stability; 9101: Surveillance; 3374: Tunnel; 3626: Underwater
• Subject Areas: Bridges and other structures; Construction; Geotechnology; Highways;

Filing Info

• Accession Number: 00493269
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: May 31 1990 12:00AM