ELABORATION OF PLANIMETRIC MODEL OF OPEN PIT WITH MULTIPLE BENCHS THROUGH THE CONVENTIONAL METHODOLOGY AND THE USE OF UNMANNED AERIAL VEHICLES (UAV)

When comparing topographic models generated through conventional methodology, which uses total station, with the models generated through UAV flight, aerial photogrammetry allows a larger volume of data that, through appropriate adjustment, provides reliable information of high precision, in addition to higher quality in the presentation of the product. The aim of this work is to compare the planimetric models produced with the purpose of verifying the progress of exploitation in multiple granite benches through the two methodologies mentioned. Hence, a survey was performed using the total station followed by the production of a model. Simultaneously, flights with different parameters were executed in order to select the Digital Surface Model (DSM) with the lowest global error, followed by the construction of another model, validated through the altimetric comparison in several points of this with the height measured in the field. Finally, it was possible to compare the two products from the theoretical width of the slopes and the one presented by the models between the foot and the projection of the crest of several points of the slopes, allowing concluding that the model generated using UAV presents greater coherence and reliability.