Numerical analyses of a leachate pumping test at a MSW landfill

Research output: Contribution to report/book/conference proceedingsIn-proceedings paperpeer-review


  • Li Yu
  • Francisco Batlle
  • Jesús Carrera
  • Enric Vázquez-Suñé
  • Jordi Font

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This paper presents the results of a long-duration pumping test with variable pumping rate performed at a MSW landfill. Measurements of the surface settlement near the pumping well reveal that the pumping-trigged deformation of the waste behaves in a strong viscous manner. The hydraulic conductivity determined in this study varies between 4.5×10-7 -5.5×10-6 m/s with an anisotropic ratio of 10. Numerical simulations show quite significant discrepancies between hydraulic modelling (H) and the coupled hydraulic-mechanical (HM) modelling, with the latter performing much better than the former. This implies the necessity of incorporating the flow model in a deforming porous medium, and as a consequence the need to account for variable hydraulic properties as deformation proceeds.


Original languageEnglish
Title of host publicationProceedings of the 13th International Waste Management and Landfill Symposium
Place of PublicationPadova, Italy
Publication statusPublished - Oct 2011
EventSARDINIA 2011 - 13th International Waste Management and Landfill Symposium - IWWG - International Waste Working Group, S. Margherita di Pula (Cagliari), Sardinia, Italy
Duration: 3 Oct 20117 Oct 2011


ConferenceSARDINIA 2011 - 13th International Waste Management and Landfill Symposium
CityS. Margherita di Pula (Cagliari), Sardinia


  • Municipal solid waste, landfilling, pumping test, HM modelling, hydraulic conductivity

ID: 367229