Abstract
An analysis of the dynamics of flooding of rudnik N 2 Stebnitsky GHP “Polymineral”, restoration of groundwater levels, observed variability of chemical composition in mine workings, formation of natural hydrogeological stratification of the underground hydrosphere, development of karstological situation and assessment of its actual state. It is proved that after the failure that took place on March 15, 2020, there was an accelerated flooding of mine workings, underground karst cavities and saline deposits by September 2020, with gradual extinction and cessation of technogen-activity karst as flooding of supersalt deposits by August 2021 and formation equilibrium with salt rocks chemical composition of brines. The termination of the karst process is also proved on the basis of the results of experimental and material-balance modeling.
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