PRACTICAL EXPERIENCE FROM THE EXCAVATION OF SLURRY TRENCHES IN OSLO CLAY

Subway and railroad tunnel through the center of Oslo where the tunnel walls are constructed by means of the slurry trench method is described. Every 4.5 m crosswise along the tunnels, slurry trenches are excavated and cast with concrete 5 m below the bottom of the tunnels. This contributes both to preventing bottom heave failure and to bracing the tunnel walls. Of the total 31,000 square meters of slurry trench excavated, 18,000 square meters are carried out with only water as slurry, while for the remaining trenches, partly the traditional bentonite slurry and partly a slurry made of clay from the site are used. The stability of the slurry trenches and results of some of the extensive measurements, observations and experience gathered during the execution of the projects are discussed.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00781193
• Corporate Authors:

  Norwegian Geotechnical Institute

  P.O. Box 40 Tasen
  Oslo 8,   Norway 
• Authors:
  • Karlsrud, K
• Publication Date: 1976

Media Info

• Features: References;
• Pagination: p. 39-47
• Serial:
  • Norwegian Geotechnical Institute Publication
  • Issue Number: 110
  • Publisher: Norwegian Geotechnical Institute
  • ISSN: 0078-1193

Subject/Index Terms

• TRT Terms: Bentonite; Bracing; Clay; Concrete; Construction; Excavation; Excavation and tunneling; Slurry trenches; Subways; Tunneling
• Old TRIS Terms: Excavation technology; Slurry trench construction; Slurry tunneling; Subway construction; Tunnel excavation
• Subject Areas: Bridges and other structures; Construction; Highways; Public Transportation;

Filing Info

• Accession Number: 00156341
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Aug 31 1981 12:00AM