Tomografia elétrica como ferramenta de investigação indireta : estudo de caso para implantação de aterro sanitário de resíduos domiciliares urbanos

Abstract

The correct disposal of solid waste is widely discussed in Brazil and in the world, but there is a great difficulty for its application, especially in small cities in the country. In this context, this work aimed to use the geological Resistivity Method as a tool in the geological characterization of an area intended for a waste landfill in Jaciara, state of Mato Grosso. The results obtained using the ERT technique allowed observing the variations of the resistivity values along the 2D profiles and identifying them based on the regional geology and in the SPT carried out in the area. Resistivity values < 100 Ω.m indicate the presence of permeable zones, while values above 537 Ω.m indicate more resistive regions, with unsaturated sandy soils and the presence of water level varies between 5 to 30 m deep. The analysis of the resistivity variation along the sections, the geological parameters defined by the Brazilian norms and the direct tests carried out in the area, allowed classifying it as favorable for the installation of the Waste Landfill. The method proved to be effective applied to engineering problems, being used for litho-stratigraphic definition and variations in moisture content, ainly in large areas, with a reduction in the cost of applying direct methods, especially in municipalities with scarce resources.