THE STABILITY OF A SLURRY TRENCH IN COHESIONLESS SOILS

Hydrostatic pressure, arching of the soil and electro-osmotic forces have each been suggested as the deominant factor to account for stability of trench excavations in cohesionless soils supported by clay slurries. The Authors suggest that the mose important mechanism is the hydrostatic pressure of the slurry. however, the increase in density of the slurry due to the suspension of cuttings must be considered in computing this hydrostatic pressure. While a concrete diaphragm cut-off was under construction at Pierre-Benite, France, an unexpected flood occurred, causing several slips in the trench excavation. The analysis of these slips is presented and it confirms that the stability of a slurry trench in cohesionless soil can be accounted for provided that the correct density is used in computing the hydrostatic pressure of the slurry.

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 387-395
  • Serial:
    • GEOTECHNIQUE
    • Volume: 15
    • Issue Number: 4
    • Publisher: Thomas Telford Limited
    • ISSN: 0016-8505

Subject/Index Terms

Filing Info

  • Accession Number: 00262636
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 27 1974 12:00AM