Modelos de previsão da resistência ao cisalhamento de resíduos sólidos urbanos
Models for predicting the shear strength of municipal solid waste
DOI:
https://doi.org/10.21680/2447-3359.2025v11n1ID37289Abstract
The stability of landfill slopes is often compromised by inaccurate estimates of the shear strength parameters of urban solid waste (MSW), which are heterogeneous and dynamic. In this context, the present study aims to develop statistical models capable of predicting geomechanical parameters (shear stress, intercepted cohesion and friction angle) of MSW with different ages, moisture contents and specific weights, under saturated and unsaturated conditions. The experimental site was the Sanitary Landfill of Campina Grande-PB. The methodology was based on direct shear tests, following the Mohr-Coulomb rupture criterion, with a central composite design and controlled variables. The models obtained demonstrated high statistical accuracy and proved to be effective instruments in estimating the strength parameters of MSW, and can support safer and more economically viable designs and operations in landfills.
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