Authors: Michálek, B; Rapantova, N; Grmela, A; Hájek, A

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DOI https://doi.org/10.36487/ACG_repo/852_54

Cite As:
Michálek, B, Rapantova, N, Grmela, A & Hájek, A 2008, 'Quasi-Stagnant Mine Waters of Flooded Uranium Deposits as a Utilizable Uranium Source', in AB Fourie, M Tibbett, I Weiersbye & P Dye (eds), Mine Closure 2008: Proceedings of the Third International Seminar on Mine Closure, Australian Centre for Geomechanics, Perth, pp. 587-598, https://doi.org/10.36487/ACG_repo/852_54

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Abstract:
As spontaneous flooding of a decommissioned underground mine progresses, the concentrations of substances dissolved in mine waters increase. Once the hydrological regime has been stabilized, a distinct vertical stratification of mine waters develops, i.e. one that is especially governed by the minimization of mine water flow after the cessation of the hydraulic gradient induced earlier by actively draining the mine. These principles are evident in practically all ore and also coal mines (Rapantová and Grmela, 2004, Michálek et al., 2005). In the case of uranium mines, an increase in the concentration of uranium and other elements occurs in mine waters in deeper horizons of the former mine. In so-called quasi-stagnant waters, uranium concentrations are also markedly higher than in the upper part of the aquifer. Mine waters accumulated in deeper parts of former uranium mines thus represent, with regard to their considerable volumes and high concentrations of dissolved uranium, a significant secondary source of this raw material. Potential utilization of these mine waters as a secondary uranium source is, to a certain extent, analogous to the in situ leaching method of mining. Nevertheless, the process of transferring uranium into solution is not intensified by introducing acids into the rock environment, but instead the natural processes of dissolving uranium minerals in mine waters after their preceding oxidation in the stage of deposit exploitation are used.

References:
Diersch, H.J.G. (2006) FEFLOW Finite Element Subsurface Flow and Transport Simulation System. Reference
Manual. WASY GmbH Institute for Water Resources Planning and Systems Research.
Hájek, A., Lusk, K., Všetečka, M. and Veselý, P. (2006) Analýza zaplavování uranových dolů v České republice
(Analysis of flooding the uranium mines in the Czech Republic), Archives of Diamo s. p., 171 p. and suppls.
Kalous, J., Kopřiva, A. and Zeman, J. (2006) Výsledky zonálního monitoringu na lokalitě Příbram - jáma 19. Závěrečná
zpráva (Results of Zonal Monitoring in the Locality of Příbram - Shaft 19, final report), Separa-Eko, spol. s r.o.,
Brno, pp. 1-4 and suppls.
Michálek, B., Hájek, A. and Grmela, A. (2005) Closure of Uranium Mines in the Czech Republic, Mine Planning and
Equipment Selection 2005, Singhal (ed.), Banff, Canada, pp. 805-826.
Michálek, B., Rapantová. N., Grmela, A. and Hájek, A. (2007a) Utilisation of Mine Waters from Closed and Flooded
Underground Uranium Mines as a Secondary Source of Uranium, Mine Closure 2007, In A.B. Fourie, M.
Tibbett and J. Wiertz (eds), Proceedings of the 2nd International Seminar on Mine Closure, Santiago, Chile,
pp. 509-519.
Michálek, B., Hájek, A., Rapantová, N. and Grmela, A. (2007b) Výzkum důlních vod uranového ložiska Olší -
Drahonín (Research on Mine Waters of the Uranium Deposit of Olší - Drahonín), Journal Uhlí, Rudy,
Geologický průzkum, December 2007, pp. 11-15.
Rapantová, N. and Grmela, A. (2004) Experience with Coal Mine Closure in the Czech Republic - Mine Water
Problems, Mine Water 2004 - Coal Mines Remediation Conference, University of Newcastle, United Kingdom.




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