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Stability Analysis of Waste Landfill Using Multi-interface Element Numerical Method  

장연수 (동국대학교 토목환경공학과)
김홍석 (동국대학교 대학원 토목환경공학과)
Publication Information
Journal of the Korean Geotechnical Society / v.20, no.4, 2004 , pp. 29-38 More about this Journal
Abstract
A finite element nonlinear stress-deformation model with multi-interface element is applied to the stability analysis of waste landfill slope. Strength parameters of waste and geosynthetic materials are obtained from the triaxial test of waste and the direct shear test of geosynthetics, respectively. The landfill models used for the numerical models are fit to regulations of the Korean waste management law. The results of the strength tests showed linear behavior for the waste and nonlinear behavior for the eosynthectic materials. The stability analysis with multi-interface element for the geosynthetic materials in the liner system showed large shear stress and slippage at the boundary of the foundation and the slope of the waste fill. This analysis verified the necessity of multi-interface analysis for waste landfills with composite liners.
Keywords
Geosynthetic materials; Korean waste management law; Multi-interface element; Nonlinear stress-deformation model; Stability analysis of waste landfill;
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