Numerical analyses of a leachate pumping test at a MSW landfill
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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 language | English |
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| Title of host publication | Proceedings of the 13th International Waste Management and Landfill Symposium |
| Place of Publication | Padova, Italy |
| Pages | 1-9 |
| Volume | 1 |
| Publication status | Published - Oct 2011 |
| Event | SARDINIA 2011 - 13th International Waste Management and Landfill Symposium - IWWG - International Waste Working Group, S. Margherita di Pula (Cagliari), Sardinia, Italy Duration: 3 Oct 2011 → 7 Oct 2011 |
Conference
| Conference | SARDINIA 2011 - 13th International Waste Management and Landfill Symposium |
|---|---|
| Country/Territory | Italy |
| City | S. Margherita di Pula (Cagliari), Sardinia |
| Period | 2011-10-03 → 2011-10-07 |
Keywords
- Municipal solid waste, landfilling, pumping test, HM modelling, hydraulic conductivity
ID: 367229