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The Dobrudzha Coal Deposit is characterized by complex geological, tectonic and hydrogeological conditions. The formed aquifers and complexes, on the one hand, hinder the possible exploitation of the coal deposit, on the other hand they are important for drinking water supply in the area. The aim of the present study is to develop a 3D hydrodynamic model in the area of the deposit to elucidate the dynamics of the flow processes, the hydraulic connections between the different hydrogeological units and the possibil...

Significant parts of important aquifers in Bulgaria are affected by the long-term in-situ leaching of uranium, using acid in borehole systems with reinjection. This is the case with the Momino uranium deposit formed in the lower part of the Neogene-Quaternary sedimentary complex, filling the Thracian depression. In this complex is formed one of the main sources of water supply in this part of the country. In order to assess the actual status and to predict the future changes in the quality and composition of the g...