Geotechnical mapping of the urban perimeter of Chapada dos Guimarães: subsidies to the city master plan

Abstract

The cartographic prediction, characterization, and documentation of geological processes and hazard areas have fundamentalimportance for land-use regulation and planning, respecting the potentials and limits of the lands. Geotechnical mappingis an effective tool, which provides local authorities with such information, as demonstrated in the elaboration of thegeotechnical mapping of the urban area of Chapada dos Guimarães, in Mato Grosso state, Brazil. The morphopedologicalapproach was used, and it allowed the integrated interpretation of physical components and deductions of water shed operations.It also allowed the boundary identification of areas of relative homogeneity, as far as physical processes, geotechnicalattributes, potentialities and restrictions of land use are concerned. Six geotechnical units were defined and characterized.One was favorable for using without restrictions; two others were restricted but subject to control by Civil Engineeringworks and the remaining three ones presented geological risks associated with mass movement and erosion. The latter wasconsidered non favorable for human occupation, therefore of restricted use, and specific planning conditions.

Keywords

• Geotechnical mapping
• Geological hazard
• Morphopedological approach
• Chapada dos Guimarães