title: Approach for the use of MSW settlement predictions in the assessment of landfill capacity based on reliability analysis.
abstract: In the analysis and design of municipal solid waste (MSW) landfills, there are many uncertainties associated with the properties of MSW during and after MSW placement. Several studies are performed involving different laboratory and field tests to understand the complex behavior and properties of MSW, and based on these studies, different models are proposed for the analysis of time dependent settlement response of MSW. For the analysis of MSW settlement, it is very important to account for the variability of model parameters that reflect different processes such as primary compression under loading, mechanical creep and biodegradation. In this paper, regression equations based on response surface method (RSM) are used to represent the complex behavior of MSW using a newly developed constitutive model. An approach to assess landfill capacities and develop landfill closure plans based on prediction of landfill settlements is proposed. The variability associated with model parameters relating to primary compression, mechanical creep and biodegradation are used to examine their influence on MSW settlement using reliability analysis framework and influence of various parameters on the settlement of MSW are estimated through sensitivity analysis.
authors.affiliation: Department of Civil Engineering, Indian Institute of Science, Bangalore 560 012, India. Electronic address: gls@civil.iisc.ernet.in.
authors.forename: G L
authors.initials: GL
authors.lastname: Sivakumar Babu
authors.forename: Sandeep Kumar
authors.initials: SK
authors.lastname: Chouksey
authors.forename: Krishna R
authors.initials: KR
authors.lastname: Reddy
mesh_terms: D001673:Biodegradation, Environmental; D008962:Models, Theoretical; D010934:Planning Techniques; D012037:Refuse Disposal / Q000379:methods*; D012044:Regression Analysis; D015203:Reproducibility of Results; D064091:Waste Disposal Facilities
keywords: Biodegradation; Constitutive model; Creep; Reliability; Response surface method