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An optimisation method for determining permeability and effective stress relationships of consolidating cohesive sediment deposits
Thiebot, J.; Guillou, S.; Brun-Cottan, J.C. (2011). An optimisation method for determining permeability and effective stress relationships of consolidating cohesive sediment deposits, in: Le Hir, P. et al. (Ed.) Proceedings of the 9th International Conference on Nearshore and Estuarine Cohesive Sediment Transport Processes (INTERCOH '07), Brest, France, September 25-28, 2007. Continental Shelf Research, 31(10, Suppl.): pp. S117-S123. https://hdl.handle.net/10.1016/j.csr.2010.12.004
In: Le Hir, P. et al. (Ed.) (2011). Proceedings of the 9th International Conference on Nearshore and Estuarine Cohesive Sediment Transport Processes (INTERCOH '07), Brest, France, September 25-28, 2007. Continental Shelf Research, 31(10, Suppl.). Elsevier: Amsterdam. 210 pp., more
In: Continental Shelf Research. Pergamon Press: Oxford; New York. ISSN 0278-4343, more
Peer reviewed article  

Available in  Authors 
Document type: Conference paper

Author keywords
    Cohesive sediment; Consolidation; Gibson theory; Permeability; Effectivestress; Modelling

Authors  Top 
  • Thiebot, J.
  • Guillou, S.
  • Brun-Cottan, J.C.

Abstract
    Gibson's equation is widely used to describe the behaviour of consolidating soft mud soils. This equation needs to be supplied with constitutive relationships, which relate effective stress and permeability to a quantity describing the soil density (mass concentration or void ratio for instance). In this paper, a method to determine the constitutive relationships is presented. This method requires recording the height of the interface between the clear water and the mud deposit. The results compare well with the ones obtained following the conventional method, which requires pore water pressure and density measurements.

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