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 |
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| Place of Publication | Padova, Italy |
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| Pages | 1-9 |
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| Volume | 1 |
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| State | Published - Oct 2011 |
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| Event | SARDINIA 2011 - 13th International Waste Management and Landfill Symposium - S. Margherita di Pula (Cagliari), Sardinia, Italy |
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| Conference | SARDINIA 2011 - 13th International Waste Management and Landfill Symposium |
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| Country | Italy |
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| City | S. Margherita di Pula (Cagliari), Sardinia |
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| Period | 2011-10-03 → 2011-10-07 |
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