Correlações entre a permeabilidade e os atributos físicos do solo da sub-bacia do córrego centenário da cidade de Lavras-MG

Abstract

The permeability of the soil is a physical attribute of great importance for engineering, being necessary its determination in the works where it has water movement in the soil. Several are the physical attributes of the soil that have influence in the values of the coefficient of permeability, being considered the most important ones the density and the porosity. This paper aimed at verifing the existing correlation between different physical attributes of the soil with the permeability. These soils were removed of the sub–basin of the stream Centenário, located in the urban area of the Lavras city (Minas Gerais state, Brazil). For collecting those soils were used a sampler projected especially for this research, wich presented a good efficiency in the representation of removed soil, and comparing the results of the tests in laboratory with the field tests. The attribute of the soil that better correlated with the permeability was the macroporosity, verifying yet its good correlation concerning to the microporosity, resistance to the penetration and soil density.