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Predicatin of MSW Long-term Selement Induced by Mechanical and Decomposition-Base Compressions

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Long-term settlement ofM יwlandfi lls is 11 complex process , which is explainedby the following two mechanisms: ( I) th e mechanical long-te rm compression ofdegradable organ ic solids (DO ) an d un-degra able organic so lids (UD S); rind 2) th e decomposition-based compression of the DO . Based on these tw dist inct s tlerncnt mechanisms. in this study, the auth rs propose a new estimation model to predict the long-term sett lement ora MSW landfill. An optimization process using a real-codedgenetic algorithm (GA) is performed (0 evaluatetheparameters of the pro ed estim tion model, based on the settlemenI data measured at the Mountain View Land fill locatednear San Jose,California, USA. In comparisonwith the existing settlement models, the mode l p ic ettlement veryclose to the measured data and closely conformed to the Grisolia and Napol niיs long-term ttlement curve, Unlike theexisting models, it is the onlymodel that can produce imation f r both long-term and short-termsettlement reliably and consistent ly.

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