Validação de modelo acoplado para previsão de recalques em aterros sanitários

Abstract

This work aims to validate a coupled model for prediction of landfill settlement. Firstly, Muribeca and Belo Horizonte landfills were chosen. Then, data were collected for each landfill, such structural and geometric conditions of the cells, the thickness of layers of solid waste, organic content, and monitored settlements. Subsequently, the Tapahuasco (2009), Meruelo (1995) and Bjarngard and Edgers (1990) models were applied. The results obtained through the application of the settlement prediction models were satisfactory, validated through the linear correlation, made by the Pearson and Least Squares methods. The Meruelo model obtained better performance in relation to the linear correlation, with an average above 0.97, the Tapahuasco model obtained an average linear correlation above 0.91, and the Bjarngard and Edgers model showed an average above 0.95. The Tapahuasco model has great versatility when compared to the other models, making it possible to estimate initial unregistered settlements and, providing for settlements under the effects of increased load and biodegradability.