карст

Objective. The aim of this work is to study the efficiency of combining such methods as: investigation of the natural pulse electromagnetic field of Earth (NIEMFE) and transient electromagnetics (TEM) for the preliminary assessment of the degree of stability of mining fields within the deposits of potassium salts in the Precarpathian area, as well as forecasting the development of deformation processes in the near-surface layer of the geological environment. Methodology.

Purpose. The purpose of this work is definition of potentially ecologically-hazard and karst-chasm zones and prediction of karst development near the Skhidnytsia-Pisochne highway on the area of mine No.2 of Stebnyk potassium deposit by electroprospecting method, namely time domain electromagnetic method (TDEM). Methodology. The research was carried out using the TDEM method in the modification of “the contour in the contour”. To study the upper part of the cross-section down to 100 meters, the digital equipment for electroprospecting “Stage” was used.

The results of electro-magnetic diagnostics of the medium in the upper part of geological cut between river of Sivka and the northern border of quarry are presented. Time domain electromagnetic sounding has detected and quantitatively outlined a zone of anomalous conductivity associated with development of filtration-suffosion and karst processes in the gypsum-clay cap and in the ore body as a result of infiltration of river waters and atmospheric precipitations into water-bearing horizon, and their migration in the border zone at lower hypsometric dates.