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Prediction of the Slope Stability of Municipal Solid Waste Landfills Using the Reliability Analysis

Datta, Sampurna and Babu, Sivakumar GL (2016) Prediction of the Slope Stability of Municipal Solid Waste Landfills Using the Reliability Analysis. In: Geo-Chicago Conference - Sustainability, Energy, and the Environment (Geo-Chicago), AUG 14-18, 2016, Chicago, IL, pp. 668-677.

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Official URL: http://dx.doi.org/10.1061/9780784480144.066


Landfill stability is one of the most important concerns in the landfill design and operation. Several slope failures in the past decade highlight the need for the detailed analysis of landfill stability. These failures are attributed to reasons such as heterogeneous composition, improper evaluation of shear strength parameters and the effects of mechanical creep and biodegradation on strength response as well as non-consideration of material variability issues. MSW properties vary due to heterogeneous nature, overburden pressure, and degradation. This heterogeneity and uncertainty in MSW characteristics makes the analysis and design of landfills complicated. In the present study, stability as well as deformation of a typical lined landfill is analyzed using the Mohr Coulomb model for MSW, implemented in FLAC2D. The objective is to demonstrate the influence of variability in strength and stiffness parameters on stability of MSW landfill slopes. To capture the effect of variability, response surface method (RSM) is used in conjunction with Mohr-Coulomb model to develop multi-linear relationships among all the design variables. The influence of variation of unit weight with depth on stability analysis of landfill systems has been particularly studied and discussed. Results show that reliability index decreases with increase in variability of parameters and consideration of unit weight variation with depth provides more reliable estimates of factor of safety and deformations.

Item Type: Conference Paper
Series.: Geotechnical Special Publication
Additional Information: Copy right for this article belongs to the AMER SOC CIVIL ENGINEERS, UNITED ENGINEERING CENTER, 345 E 47TH ST, NEW YORK, NY 10017-2398 USA
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 07 Jan 2017 10:00
Last Modified: 21 Feb 2019 11:48
URI: http://eprints.iisc.ac.in/id/eprint/55890

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