Numerical analyses of a leachate pumping test at a MSW landfill

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

Numerical analyses of a leachate pumping test at a MSW landfill

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

Research output › peer-review

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.

Original language	English
Title of host publication	Proceedings of the 13th International Waste Management and Landfill Symposium
Place of Publication	Padova, Italy
Pages	1-9
Volume	1
State	Published - Oct 2011
Event	SARDINIA 2011 - 13th International Waste Management and Landfill Symposium - IWWG - International Waste Working Group, S. Margherita di Pula (Cagliari), Sardinia 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

Cite this

@inproceedings{68b74b84d677429cbcd7e38550843745,

title = "Numerical analyses of a leachate pumping test at a MSW landfill",

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.",

keywords = "Municipal solid waste, landfilling, pumping test, HM modelling, hydraulic conductivity",

author = "Li Yu and Francisco Batlle and Jes{\'u}s Carrera and Enric V{\'a}zquez-Su{\~n}{\'e} and Jordi Font",

note = "Score = 3; SARDINIA 2011 - 13th International Waste Management and Landfill Symposium ; Conference date: 03-10-2011 Through 07-10-2011",

year = "2011",

month = oct,

language = "English",

isbn = "978-88-6265-000-7",

volume = "1",

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booktitle = "Proceedings of the 13th International Waste Management and Landfill Symposium",

}

Yu, L, Batlle, F, Carrera, J, Vázquez-Suñé, E & Font, J 2011, Numerical analyses of a leachate pumping test at a MSW landfill. in Proceedings of the 13th International Waste Management and Landfill Symposium. vol. 1, Padova, Italy, pp. 1-9, SARDINIA 2011 - 13th International Waste Management and Landfill Symposium, S. Margherita di Pula (Cagliari), Sardinia, Italy, 2011-10-03.

TY - GEN

T1 - Numerical analyses of a leachate pumping test at a MSW landfill

AU - Yu, Li

AU - Batlle, Francisco

AU - Carrera, Jesús

AU - Vázquez-Suñé, Enric

AU - Font, Jordi

N1 - Score = 3

PY - 2011/10

Y1 - 2011/10

N2 - 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.

AB - 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.

KW - Municipal solid waste

KW - landfilling

KW - pumping test

KW - HM modelling

KW - hydraulic conductivity

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_116181

UR - http://knowledgecentre.sckcen.be/so2/bibref/8355

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SN - 978-88-6265-000-7

VL - 1

SP - 1

EP - 9

BT - Proceedings of the 13th International Waste Management and Landfill Symposium

CY - Padova, Italy

T2 - SARDINIA 2011 - 13th International Waste Management and Landfill Symposium

Y2 - 3 October 2011 through 7 October 2011

ER -