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Regional flow and transport simulation of liquid radioactive waste disposal at the Siberian chemical combine for long- and super-long-term postinjection periods

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Abstract

Regional groundwater flow and transport models were substantiated for the site of underground disposal of liquid radioactive waste from the Siberian Chemical Combine. The migration of a neutral component and two radionuclides (90Sr and U) in groundwaters was predicted for the long-(1000 years) and super-long-term (10 000 years) periods using the microdispersion and macrodispersion approaches. A local model-insert of the lithological and hydraulic heterogeneity was developed for substantiating the macrodispersion parameters. The simulation results show that, during the long-term period, the contaminated waters will be mainly localized within the injection zone (below buffer horizon IV), and during the super-long-term period about 90% of the total amount of neutral wastes will be discharged into the drainage network, whereas uranium will be fully retained within the disposal site.

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Correspondence to S. P. Pozdniakov.

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Original Russian Text © M.L. Glinskii, S.P. Pozdniakov, L.G. Chertkov, A.A. Zubkov, V.V. Danilov, V.A. Bakshevskaia, V.N. Samartsev, 2014, published in Radiokhimiya, 2014, Vol. 56, No. 6, pp. 554–560.

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Glinskii, M.L., Pozdniakov, S.P., Chertkov, L.G. et al. Regional flow and transport simulation of liquid radioactive waste disposal at the Siberian chemical combine for long- and super-long-term postinjection periods. Radiochemistry 56, 649–656 (2014). https://doi.org/10.1134/S1066362214060113

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  • DOI: https://doi.org/10.1134/S1066362214060113

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