Research Output

Geomechanics and long-term landfill settlement.

  Long term landfill settlement is commonly attributed to two phenomena: creep and biodegradation. Biodegradation, which may contribute the greater proportion of long‐term settlement, is a function of a range of factors, many of which are not easily associated with conventional geomechanical analysis. A more fundamental treatment of biodegradation effects within the constitutive framework of a hydro‐bio‐mechanical (HBM) model is presented in this paper. The role of a decomposition‐induced void volume change parameter Λ, and its ability to handle biodegradation‐related settlement, are revealed through the simulation of a long‐term, laboratory‐scale waste settlement test.

  • Date:

    01 January 2008

  • Publication Status:


  • Publisher


  • DOI:


  • Library of Congress:

    TD Environmental technology. Sanitary engineering

  • Dewey Decimal Classification:

    628 Sanitary & municipal engineering


McDougall, J. (2007). Geomechanics and long-term landfill settlement. In GeoCongress 2008: Geotechnics of Waste Management and Remediation Proceedings of sessions of GeoCongress 2008, 482-490. doi:10.1061/40970(309)24



Landfill; settlement; creep; biodegradation;

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