Geomechanics and Long-Term Landfill Settlement

McDougall, John

Abstract

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.

Citation

McDougall, J. (2008). Geomechanics and Long-Term Landfill Settlement. In GeoCongress 2008: Geotechnics of Waste Management and Remediation Proceedings of sessions of GeoCongress 2008 (482-490). https://doi.org/10.1061/40970%28309%2924

• Conference Name: GeoCongress 2008
• Start Date: Mar 9, 2008
• End Date: Mar 12, 2008
• Online Publication Date: Jun 20, 2012
• Publication Date: Mar 7, 2008
• Deposit Date: Dec 1, 2011
• Publisher: American Society of Civil Engineers
• Peer Reviewed: Peer Reviewed
• Pages: 482-490
• Book Title: GeoCongress 2008: Geotechnics of Waste Management and Remediation Proceedings of sessions of GeoCongress 2008
• ISBN: 9780784409701
• DOI: https://doi.org/10.1061/40970%28309%2924
• Keywords: Landfill; settlement; creep; biodegradation
• Public URL: http://researchrepository.napier.ac.uk/id/eprint/4801
• Publisher URL: http://dx.doi.org/10.1061/40970(309)24