Numerical analyses of a leachate pumping test at a MSW landfill

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

    Research outputpeer-review


    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
    StatePublished - Oct 2011
    EventSARDINIA 2011 - 13th International Waste Management and Landfill Symposium - IWWG - International Waste Working Group, S. Margherita di Pula (Cagliari), Sardinia
    Duration: 3 Oct 20117 Oct 2011


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

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