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2 Transactions on Environment and Electrical Engineering

2 2017

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Geoelectric method applied in correlation between physical characteristics and electrical properties of the soil

Filho A. M. S., Silva C. L. B., Oliveira M. A. A., Pires T. G., Alves A. J., Calixto W. P., Narciso M. G.

Transactions on Environment and Electrical Engineering

2017

Vol. 2, No. 2

37--44

This paper presents the study of the relationship between electrical properties and physical characteristics of the soil. Measures of apparent electrical resistivity of the soil were made for different types of soil, varying moisture content gradually while maintaining a constant compaction, and then varying the compaction and relating it to a constant humidity. Development of a correlation surface is proposed in order to identify granulometry of the soil from moisture and compaction measurements. For the study of spatial variability, two areas were chosen to allow the change of moisture content and compaction in order to verify the measurement capacity of apparent electrical resistivity of the soil as methodology to identify change in soil dynamics. Results obtained show correlations among apparent electrical resistivity of the soil, moisture, soil compaction and clay content.

Calculation of grounding grids parameter at arbitrary geometry

Silva C. L. B., Pires T. G., Calixto W. P., Oliveira D. N., Souza L. A. P., Filho A. M. S.

Transactions on Environment and Electrical Engineering

2017

Vol. 2, No. 2

11--17

This paper deals with the computation of ground resistance, surface voltage, touch voltage and step voltage, to mesh with horizontal wires arranged in different angles. The computer program implemented used in the mathematical modeling is based on the method proposed by Heppe, which allows obtaining the grounding parameters for homogeneous soil and soil stratified in two layers. The results obtained with the proposed method will be compared with other methods in literature. Also will be presented the results of a grounding grid using wires at various angles.