Monitoramento volumétrico de um aterro sanitário utilizando tecnologia RPAS (Remotely Piloted Aircraft System)

Abstract

The peculiarities inherent to the maintenance of a Sanitary Landfill make it necessary to constantly collect geotechnical information from the waste amount, aiming at the maintenance and prolongation of its useful life, the application of faster and more efficient, surveying techniques allows to play down the cost and assists landfill operation. This project had as main objective to verify the applicability of the RPA technology associated with photographic methods for the volumetric monitoring of São Gonçalo´s Land Fill. For this purpose, 4 aerial surveys were carried out at different intervals, adopting premises of the Aerophotogrammetry discipline. The generated cartographic products were submitted to Brazilian Cartographic Accuracy Standard classification, obtaining for all Class A surveys for a scale below 1: 500 and equidistance below 0.30 cm. Through the photogrammetric method, the volume of waste disposed between the survey intervals was calculated, the values found were compared with the values obtained by the topographic method and the variation was around 5%. The compaction rate was calculated using the photogrammetric method and the topographic method and the results showed the same trend, indicating a high relationship between the measured data. When comparing the surfaces generated in each survey, it was possible to identify geotechnical movements on the Z axis, however it is necessary to improve the survey methodology so that it is possible to guarantee the exact identification of geotechnical movements with RPA photogrammetry. Finally, the project concludes that it is possible to apply RPA technology associated with photogrammetric methodology for generation of accurate and precise cartographic products that meet the operational needs of a land fill and it is still possible to use this technology for inspection, providing better control by inspection bodies