Activation of Karstification under Induced Impacts at the Tyubegatan Potash Deposit
M. V. D’yakonov1, E. E. Maleev2, I. Yu. Gerasimova2
1URALKALI, Berezniki, Russia
2Mining Institute, Ural Branch, Russian Academy of Sciences, Perm, Russia
Keywords: Potash deposit, impermeable stratum, water ingress, salt karst, mine flooding risk reduction, geological medium monitoring
Abstract
The hydrogeological and geochemical situation in underground mining at the Tyubegatan potash deposit, Uzbekistan is analyzed. It is shown that an emergency water ingress in a mine stope has a direct hydrodynamic connection with aquifers in overlying strata above salt strata and with ground surface. Water ingress is a brine resulting from permeation of rainfalls in overburden along vertical cracks connected with a fault developed along the mine mainways. The change in the hydrogeological regime within a local emergency zone and the induced activation of salt karst are discussed.
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