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Home Archive of journals 1 (2), March 2018 Nonsteady-State Model of Double Porosity for the Consideration of Radionuclides’ Migration at the Eniseyskiy Site

NONSTEADY-STATE MODEL OF DOUBLE POROSITY FOR THE CONSIDERATION OF RADIONUCLIDES’ MIGRATION AT THE ENISEYSKIY SITE

JOURNAL: 2018, 2, p. 52-62

AUTHOR: A.D. Vasiliev, P.S. Kondratenko, L.V. Matveev

ANNOTATION:

he results of numerical-analytical method development and its application to radionuclides’ transport after the safety barriers’ destruction in the area of PGZRO at «Eniseyskii» site of massif «Nizhne-Kanskii» are presented in the paper. The analysis includes numerical modeling and analytical asymptotic evaluation on the basis of two-porous medium
model which is supposed to be the most adequate for numerical migration analysis based on hydro-geological conditions of «Eniseyskii» site.Preliminary estimations (taking into account current information available on key medium parameters) allow to make the conclusion that radionuclides (with low sorption ability) will reach the Enisey river in time of the order 3·105÷ 1·106 years. Correspondingly, this time will be even longer for the radionuclides with high sorption ability by a factor of R where R is the retardation factor due to sorption.It means that only isotopes with very long decay half-times will reach the environment. This conclusion allows to suppose that the levels of radiation influence on the environment will be insignificant.

Key words: Numerical modelling, analytical model, diffusion, migration of particles, burial of radioactive waste, radionuclides


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Vasiliev A. D., Kondratenko P. S., Matveev L. V. Nonsteady-State Model of Double Porosity for the Consideration of Radionuclides’ Migration at the “Eniseyskiy” Site. Radioactive Waste, 2018, no 1 (2), pp. 52—62.


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