| Under normal circumstances, radioactive waste can be carried out by an underground aquiferporous media migration threat to human living environment can also be a direct threat to humansurvival environment. Therefore, more and more people begin to pay attention radionuclide migrationin porous media behavior.In this paper, a low radionuclide Ra-226simulation study on the radionuclides in porous media-related migration mechanism and numerical simulation method, and then establish uranium tailingsmathematical model of the surrounding area. According to uranium tailings surrounding areagroundwater storage conditions are extremely complementary diameter discharge conditions,hydrogeological parameters of groundwater flow, groundwater solute transport parameters, set upuranium tailings surrounding area groundwater flow systems and groundwater conceptual model ofradionuclide migration, application Visual Modflow simulate radionuclide Ra-226in uranium tailingsin the environment surrounding area groundwater migration law.According to the simulation results,272plant uranium tailings migration of radionuclides Ra-226,and uranium-contaminated tailings halo shape is similar over time, slowly become rounded. In1000year, the272factory uranium tailings radionuclides Ra-226east, west, south, north migration of about675m, polluting an area of about3.68Km2, pollution extended area of approximately2.28Km2. In1000years, the analog some sections of the border, activity concentrations higher than the nationaldrinking water standard (GB5749-2006) in the Ra-226activity concentration limits0.185Bq/L. |
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