Method of integro-differential equations for interpreting the results of vertical electrical sounding of the soil

The paper is devoted to the problem of determining geoelectric structure soil within procedure testing grounding arrangements existing power plants and substations required depth in conditions dense development. To solve problem, it was proposed use Schlumbergers method , which has a greater sounding compared Wenner electrode array. purpose work develop mathematical model for interpreting results by Schlumberger form four-layer structure. Methodology. construct model, solution particular about field point current source, which, like observation point, located first layer soil. Based on this expressions, system linear algebraic equations 7-th order with respect unknown coefficients ai bi compiled. On basis its analytical solution, an expression potential electric obtained conducting VES (the source are only surface). Results. Comparison installation interpretation same points shows sufficient degree approximation: maximum relative error does not exceed 9.7 % (for second point), average 3.6 %. Originality. expression, test version program implemented Visual Basic Applications interpret method. check carried out territory 150 kV substation one mining processing city Kriviy Rih. Practical significance. developed will make possible increase depth, and, consequently, accuracy standardized parameters stations substations.