SOIL MECHANICS PROBLEM CAUSES BY-PASS BREAKDOWN

The article describes the earth slips above two cuts on the recently completed A45 Daventry by-pass. A long investigation using slip indicators has shown that cuttings in gentle hillsides of Jurassic origin are liable to induce slope failures even when there is no evidence of any previous ground movements. Although heavy rain has caused the recent movement to rise to 15 mm per day, the county council have decided that preventive measures are too expensive and hope that the movement will stop when the slope returns to its original shape. Meanwhile the debris is being removed from the sides as a current maintenance exercise. It is difficult to find out if there have been previous slides at a site which further excavation would set into motion. It is suggested that it is better to select another route if a relic slip is suspected. /TRRL/

• Corporate Authors:

  Dresser Transportation Equipment Division

  2 Main Street
  Depew, NY  United States  14043
• Authors:
  • Gosney, J
• Publication Date: 1977-2-24

Language

• English

Media Info

• Features: Photos;
• Pagination: 33 p.
• Serial:
  • Car Design Inputs
  • Volume: 275
  • Issue Number: 5086
  • Publisher: Dresser Transportation Equipment Division

Subject/Index Terms

• TRT Terms: Beltways; Bypasses; Clay; Cutting; Cutting (Earthwork); Landslides; Motion; Rainfall; Sandstones; Seismicity; Slope stability; Slopes; Soil mechanics
• Geographic Terms: United Kingdom
• Old TRIS Terms: Earth slides; Hillslopes
• ITRD Terms: 2709: Bypass (loop road); 4177: Clay; 2812: Cutting (earthworks); 4029: Landslide; 5483: Movement; 4104: Sandstone; 5783: Slope stability; 8119: United Kingdom
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00156456
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Analytic
• Files: ITRD, TRIS
• Created Date: Oct 13 1977 12:00AM