Electrical Resistivity Tomography as a Tool for Geological-Engineering Assessment of the Benkovski-2 Tailings Storage Facility

Abstract

Geophysical methods, and in particular electrical resistivity tomography (ERT), have proven to be highly suitable for investigating tailings storage facilities (TSFs) and addressing a wide range of engineering–geological problems. Their ability to delineate subsurface structures and identify zones with contrasting physical properties makes them an effective tool for monitoring the internal stability and hydrogeological conditions of such complex anthropogenic systems. А geophysical survey based on two-dimensional electrical resistivity tomography (ERT) was carried out at the “Suludza Dere” tailings storage facility (TSF). The objective was to determine the specific electrical resistivity distribution within a section of the TSF and to determine the spatial distribution of materials with varying resistivity, reflecting differences in composition and structural characteristics. Within this context, the 2D ERT survey was conducted to provide a detailed subsurface cross-section and identify zones with contrasting resistivity properties. The results serve as a basis for better understanding of the internal structure and hydrogeological conditions of the TSF, supporting its sustainable monitoring and safe operation.