Modelagem em 3D e 2D realizada por Vant como ferramenta auxiliar para identificação de feições geológicas, Santarém - PA

Abstract

Remote Sensing techniques have been constantly improving, bringing many improvements and innovations to professionals in different areas. The use of Unmanned Aerial Vehicles - UAVs is of paramount importance with numerous applications from professional to recreational use, resulting in lowering the cost of the tool. In this sense, the research was developed seeking to demonstrate the applicability of UAVs associated with the recognition of geological features and highlighting the use in other areas of geology. The work was carried out in a mine for the extraction of inputs for civil construction, called mina do careca, in the city of Santarém in western Pará, using as a case study outcrops of the road cutting type, where sand and clay extraction currently takes place. for use in construction. The main objective was to model outcrops of the Alter do Chão Formation in 3 and 2 dimensions and demonstrate the efficiency of the UAV, in addition to generating a database that can later be used by students for pre and post field activities. The methodology consisted of using a UAV with a flight plan previously defined by the pilot. However, the aerial survey was carried out autonomously by the UAV itself, leaving only the steering controls via smartphone to the controller. Subsequently, the data were processed and culminated in 2D and 3D models of the outcrop. The results obtained, to be highlighted, deal with the recognition of features and thickness measurements of horizontal layers of sandstones and pelites. The 2D results inform how the topography of the place behaves, where contour lines and planialtimetric maps with topographic section were generated. As it is an active mine, the results obtained are of great importance for its operation, since mine planning based on this survey will be much more efficient than those using conventional topography. The data applied in a didactic way in the classroom optimize the mapping and learning didactics, since the students have the opportunity to see the outcrop before going to the field, as well as review it without the need to visit it again. The mapping carried out with the aid of UAV gives the possibility of fidelity in digital files what is seen in the field, with the data obtained it is possible to deepen much more in the discussion of the geology of the place.