Estudo dos parâmetros hidrodinâmicos obtidos em ensaios de campo em itabiritos brandos da porção sudeste do quadrilátero ferrífero, mg

Abstract

This paper is based on the characterization of the hydrodynamic parameters hydraulic conductivity (K), transmissivity (T) and storage (S) in soft itabiritos of the southwest portion of the Quadrilatero Ferrifero (QF), MG. The study of these parameters is essential to the knowledge about aquifers, in terms of localization, quantity and quality of the water. The K was calculated using Hvorslev’s method and obtained by slug tests data for piezometers in the AquiferTest software. On the other hand, T and S had their results achieved using Neuman and Bouton methods also through the AquiferTest. The results were acquired by slope adjusts in graphs and the basis for these adjustments were pumping tests in deep tube wells. Considering the hydraulic conductivity, the graphic analyses were more effective and the results show a uniformity of this feature over the west QF, being consistent with MOURÃO (2007) studies. T and S, in turn, display the heterogeneity and anisotropy of the Caue iron formation probably caused by confined areas and secondary porosity due to the local structural complexity.