Role of stress deformation behavior of municipal solid waste in landfill design

Babu, GLS and Ering, P (2017) Role of stress deformation behavior of municipal solid waste in landfill design. In: 19th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2017, 17 - 22 September 2017, Seoul, pp. 215-229.

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Abstract

Landfill deformation and stability analysis is one of the most important concerns in the municipal solid waste (MSW) landfill design and operation. Conventional stability analysis can predict stability and deformations of landfills along critical shear planes, but they lack the capability to compute time-dependent stress and deformation response due to the effects of time-dependent mechanisms such as creep and biodegradation occurring in municipal solid waste (MSW). In this study, MSW is modelled using a constitutive model which considers time-dependent mechanisms and its degradable characteristics. The study illustrates the role of constitutive model of MSW on the stress-deformation characteristics of landfill systems. In this paper, a simple case of landfill slope representing MSW of Bangalore city is considered and stability and deformation analysis is performed. The model predicts that the effect of different mechanisms in MSW is to increase the overall stability of landfill with time. The stability and deformation characteristics of a typical lined landfill system is also evaluated using the model. The implications of the study are that in addition to the stiffness of MSW and stress levels, time-dependent mechanisms such as creep and biodegradation control the stress-deformation response of composite liners.

Item Type:	Conference Paper
Publication:	ICSMGE 2017 - 19th International Conference on Soil Mechanics and Geotechnical Engineering
Publisher:	19th ICSMGE Secretariat
Additional Information:	The copyright for this article belongs to 19th ICSMGE Secretariat.
Keywords:	Biodegradation; Constitutive models; Convergence of numerical methods; Creep; Deformation; Geotechnical engineering; Land fill; Shear flow; Slope stability; Soil mechanics; Solid wastes; Stability, Composite liner; Deformation analysis; Deformation Characteristics; Different mechanisms; Municipal solid waste (MSW); Municipal solid waste landfills; Overall stabilities; Stress and deformation, Municipal solid waste
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	26 Jul 2022 04:58
Last Modified:	26 Jul 2022 04:58
URI:	https://eprints.iisc.ac.in/id/eprint/74701

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