Geoprocessamento aplicado ao mapeamento geotécnico em escala regional - o caso da serra de Baturité, CE

Abstract

The Baturité Mountain is the region of Ceará where it is more noticeable the presence of areas of geotechnical instability involving landslides and erosion. The highways are the main triggering agents of mass movements and the occupation of slopes in urban and rural areas, the main promoters agents of accelerated erosion, which in addition to climate, geomorphological, geological and soil characteristics of the region, contributing to the occurrence of landslides and soil loss resulting in economic losses, and sometimes in accidents. The geotechnical zoning established in the Baturité Mountain had geoprocessing resources assisted by field survey and laboratory tests to define higher or lower geological risk sectors. Cartographic products generated through techniques of digital image processing and spatial analysis showed satisfactory to the purpose of zoning the areas of greatest susceptibility geotechnical results and may serve to support the decision making of managers and civil community of the region. It is concluded that the used geoprocessing tools promoted the generation of essential data and geotechnical mapping when done with the aid of laboratory geotechnical tests already established in the literature, the reliability of the data collected can satisfactorily meet the expectations of professionals and researchers and increase the availability of information on the geotechnical box large areas on a regional scale.