CONSTRUCTION METHOD AND STABILITY OF EMBANKMENTS ON MUSKEG

A METHOD FOR THE DESIGN AND CONSTRUCTION OF RELATIVELY THICK HIGHWAY EMBANKMENTS ACROSS MUSKEG DEPOSITS IS DESCRIBED. USING THEORETICAL SOIL MECHANICS CONCEPTS, IT IS PREDICTED THAT THE LONG TERM STABILITY OF THE MUSKEG NECESSITATES THE USE OF BERMS DESPITE THE FACT THAT AN UNDRAINED STRENGTH ANALYSIS BASED ON IN-SITU VANE TESTS MAY PREDICT A REASONABLE FACTOR OF SAFETY. CONSIDERATION OF BOTH THEORETICAL SOIL MECHANICS CONCEPTS AND PRACTICAL CONSIDERATIONS SUGGESTED THAT THE INTERACTION BETWEEN THE SOIL AND THE BERM DICTATES THAT BERM CONSTRUCTION SHOULD BE FROM THE OUTER LIMITS TOWARDS THE CENTRE AND SHOULD BE PLACED PRIOR TO THE CENTRAL FILL. SEVERAL CASE RECORDS ARE PRESENTED TO SUPPORT THE CONCLUSIONS DRAWN AND FURTHERMORE SUGGEST THAT THE WIDTH OF THE BERM SHOULD BE 1 1/2 TO 2 TIMES THE THICKNESS OF THE MUSKEG (PEAT PLUS LAKE MARL). /CGRA/

• Supplemental Notes:
  • Vol 6, No 1, PP 81-96, 16 FIG, 1 TAB, 8 REF
• Authors:
  • Raymond, G P
• Publication Date: 0

Media Info

• Serial:
  • CANADIAN GEOTECHNICAL JOURNAL
  • Issue Number: 0
  • Publisher: National Research Council of Canada

Subject/Index Terms

• TRT Terms: Berms; Construction management; Design; Embankments; Highways; Soil mechanics; Stability (Mechanics); Swamps; Vane shear tests
• Old TRIS Terms: Embankment stability
• Subject Areas: Construction; Design; Geotechnology; Highways; Marine Transportation;

Filing Info

• Accession Number: 00230957
• Record Type: Publication
• Source Agency: CANADIAN GOOD ROADS ASSOCIATION
• Files: TRIS
• Created Date: Aug 15 2004 2:40AM