Shallow Geoelectric Sounding Application For Earthing Purpose In AL Diwaniayah Electric East- Substation Site/ South of Iraq.

Electrical Resistivity Method involving Shallow Vertical Electrical Sounding (VES) was carried out in four (4)locations in AL Diwaniyah Electrical EastSubstation site, AL Diwaniyah province, South of Iraq, using the Wenner (α) array configuration with the aim of determining the conductive zone for establishing suitable earthling medium in the area. At each location, vertical electrical soundings with total spread of AB/3 = 30m were occupied with ‘a’ varying from 1m to 10 m. The acquired field data has been interpreted by Edwards formula, ID IPI2win software and Inverse slope methods. The result reveals between three (4) to five (5) geo-electric zones which comprise of essentially silty clay with fully water saturation condition . The resistivity ranges between 1.05 -7.3 ohm-m and thickness is 2.5 m . The curve types obtained from the study area were QH and QQ types. The results reveal the points characterized by a reasonable silty clay thickness that may serve the purpose of a good earthling medium /protective soil material in some of the locations.