Numerical analyses of a leachate pumping test at a MSW landfill

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

Authors

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

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Abstract

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.

Details

Original languageEnglish
Title of host publicationProceedings of the 13th International Waste Management and Landfill Symposium
Place of PublicationPadova, Italy
Pages1-9
Volume1
StatePublished - Oct 2011
EventSARDINIA 2011 - 13th International Waste Management and Landfill Symposium - S. Margherita di Pula (Cagliari), Sardinia, Italy

Conference

ConferenceSARDINIA 2011 - 13th International Waste Management and Landfill Symposium
CountryItaly
CityS. Margherita di Pula (Cagliari), Sardinia
Period2011-10-032011-10-07

Keywords

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

ID: 367229