A coupled model for prediction of settlement and gas flow in MSW landfills

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  • Li Yu
  • Francisco Batlle
  • Antonio lloret

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Prediction of long-term settlement and control of gas pollution to the environment are two principle concerns during the management of municipal solid waste (MSW) landfills. The behavior of settlement and gas flow in MSW landfills is complicated due to the combined effect of mechanical deformation of the solid skeleton and continuous biodegradation of the waste. A one-dimensional settlement and gas flow model is presented in this paper, which is capable of predicting time evolution of settlement as well as temporal and spatial distribution of gas pressure within multi-layered landfills under a variety of operating scenarios. The analytical solution to the novel model is evaluated with numerical simulation and field measurements. The resulting efficiency and accuracy highlight the capability of the proposed model to reproduce the settlement behavior and gas flow in MSW landfills. The influences of operating conditions and waste properties on settlement and gas pressure are examined for typical MSW landfills.


Original languageEnglish
Pages (from-to)1169-1190
JournalInternational Journal for Numerical and Analytical Methods in Geomechanics
Issue number11
Publication statusPublished - Sep 2010


  • municipal solid waste landfill, settlement, gas flow, Laplace transform, analytical formulation

ID: 176853