Theoretical Explanation of Conditions for Sinkholes after Emergency Flooding of Potash Mines
A. A. BARYAKH, S. YU. DEVYATKOV, N. A. SAMODELKINA
Mining Institute, Ural Branch, Russian Academy of Sciences, ul. Sibirskaya 78a, Perm, 614007 Russia
Keywords: затопление рудника, растворение пород, провалы, математическое моделирование, разрушение, mine flooding, dissolution of rocks, sinkholes, mathematical modeling, failure
Abstract
The authors discuss conditions for sinkholes at ground surface after the active phase of potash mine flooding has been completed. The mathematical modeling shows that interconnected signs of sinkholing are localization of subsidence in a comparatively small area, high gradients of subsidence at the boundaries of this area and occurrence of a solution cavity to accommodate the caved volume. The research findings are promising in terms of adequate space-time prediction of dynamic failure of strata above flooded mines.
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