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High-density electrical method is widely used in hydrology, engineering, environment, and other fields. It is of great practical significance to study its exploration depth and resolution. The traditional theoretical research is to analyze and explore the exploration depth and resolution through the current density. Based on the theory of field theory, this paper proposes to study the depth and resolution of high-density electrical exploration based on a stable DC electric field. First, the derivation of the three field quantities of potential, current, and field lines in the normal field was completed, and related numerical simulation calculations were realized. Through theoretical model calculation and analysis, qualitative comparison conclusions of the two methods of Winner and Schlumberger are obtained. It is believed that the detection depth and resolution of the Winner method are lower than those of the Schlumberger, but the observation accuracy of the Winner method is higher than the Schlumberger method. Furthermore, the reliability of this conclusion is verified by physical model experiments. At the same time, the feasibility of the research on exploration depth and resolution based on the three electric field components of potential, current, and field lines is also proved.

A Comparative Study on the Exploration Depth and Resolution of Winner and Schlenberg Methods Based on Potential, Current and Field Fields