Zastosowanie metody obrazowania elektrooporowegodo rozpoznania podłoża Południowej Obwodnicy Warszawy

The article presents the usage of electricalresistivity imaging (ERI) in ground recognition for linearconstructions such as the Warsaw Southern Ring-Road.Measurements were performed in a gradient array, onfive segments of the route, with previously researchedgeological conditions. Measurement method intended toprobe the soil matrix on different depths. Therefore, theelectrode array was set to 2 to 5 meters. The resultingimage of resistivity differed in resolution. Resistivity images were correlated with geological data from boreholes in geology-engineeringdocumentation and other widely available geological information from databases and literature. This allowed to limit ambiguity of inter-pretation of two-dimensional model of near surface soil matrix resistivity. Thereby, individual ranges of resistivity were assigned to geolo-gical content. The measurements allowed to identify geological horizontal variability. Electrical resistivity imaging research confirmedits utility in the recognition of spatial distribution of geological media in foundation soil. The analysis of completed surveys allowed todesignate the following areas: locations where anthropogenic and organic soils occur, probable location of the edge of the upland on theeastern side of Vistula River and upper relief of local Neogene clays.