Application of Multi-criteria Analysis to Evaluate the Potential for the Occurrence of Cavities in Serra do Gandarela and Presentation in 3D Geological Modeling Software

Abstract

The study of cavities and their areas of influence for purposes of environmental intervention has gained increasing relevance in Brazilian legislation. Serra do Gandarela is a geomorphological site, located in the State of Minas Gerais, which concentrates a large amount of speleological features, in addition to mineral resources. This article seeks to present multi-criteria analysis techniques in a GIS environment to measure the potential for the occurrence of cavities in the region in order to arrive at a map of the speleological potential of the site. The result will then be superimposed on a geological model developed for the region, in order to be able to observe transversal profiles in order to correlate the results considering the imputed geological and geomorphological factors. The importance of the analysis carried out is to expose the areas with the highest concentration of factors favorable to the development of cavities in regions close to mining activities, with the objective of guiding mining activities in a less harmful way to the environment. The suggestion of presentation in 3D platform is made to allow a more dynamic observation in addition to highlighting topographic and slope factors.