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oa Calculated and Actual Seismic Consequences of Geodynamic Processes During the Activation of Salt Karst within the Stebnyk Potash Deposit
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 5th EAGE Workshop on assessment of landslide hazards and impact on communities, Sep 2025, Volume 2025, p.1 - 5
Abstract
The Stebnyk potash salt deposit is one of the largest in Ukraine. The inflow of drainage waters into the mining chambers of Mine No. 2 led to the formation of three large sinkholes. The aim of the study was to analyze geological observation data and seismic monitoring under conditions of salt karst activation and the formation of a hydrogeological system in the area affected by the largest karst sinkholes. During the design of a temporary seismic monitoring system, which initially included one and later three seismic stations, global experience in applying seismological methods to investigate the condition of emergency salt mines was employed. For data interpretation, nearby stations of the Carpathian regional seismological network were also used. Weekly urgent reports on seismic events in the area of the Stebnyk deposit were su Based on the results of the study, seven types of geodynamic processes accompanying technogenically activated karst within the delineated model of pillar undercutting were substantiated. A connection was established with the geological, mining-geological, and hydrogeological characteristics of the development of technogenically activated salt karst. A potential correlation between the mine collapse events and tectonic activity near the deposit is acknowledged. Conclusions were drawn regarding the types of geodynamic processes. The energy released during one of the largest rock collapses in the mine was assessed, and other geodynamic processes were ranked. A combination of direct geological observation methods and seismic monitoring was applied to assess the state of the geological environment and forecast potential catastrophic events.
