Caracterização geológica-geotécnica do sítio urbano de Monte Carmelo e entorno – MG

Abstract

The cities represent a space of man's intervention in the natural physical environment more modifying, making this particular environment and extremely distinct from the original. This anthropic interference in the geological physical environment corresponds to: removal of native vegetation, combined with geotechnical imbalance as a result of excavations, cuts, embankments, foundations, subversion of the surface drainage system, exposure of soils to erosion, etc. The manipulations exerted on the physical space for the accommodation of communities generate responses to be observed and controlled, thus, the work demonstrates the application of geology in urbanized areas pointing out the different aspects resulting from anthropic intervention on the natural physical environment, through the geological-geotechnical characterization in the urban site of Monte Carmelo-MG, which is located in the Mesoregion of Triângulo Mineiro/Alto Paranaíba. This characterization was carried out in order to contribute to the municipal master plan, since, in the current configuration, there is a lack of such diagnostic and guiding cartographic documents.The work adopted as methodological orientation the method of progressive detailing, starting from the general stage of scale 1:25,000, characterizing the physical environment, its restrictions and potentialities, through the following cartographic documents: geomorphological map, pedological map, lithological map, slope, hypsometric, map geotechnical map, map of permanent protection areas and map of potential susceptibility. The susceptibility potential map is a product that aims to indicate locations for the second stage of the progressive detailing method in order to provide subsidies for adequate soil planning and management. The products generated in combination with the data collected in the field showed that the areas corresponding to the granitoids have a greater potential for erosive features, have sandy soils in areas of greater slope, while the city is settled on thick and well-drained latosols, on convex tops of extensive interfluves, the permanent protection areas are transgressed in the rural area by agricultural cultivation and in the urban area by the installation of neighborhoods and drainage channels. The products generated and the results obtained tend to contribute to urban planning regarding anthropic occupation in limitation areas, cooperating with an adequate interaction for urban expansion.