Abstract: Stochastic simulation theories were used to calculate the radionuclide migration in groundwater at low and intermediate level solid radioactive waste(ILRW) disposal facility. To better understand about the dangers of public for radiation and the radionuclide migration in fractured rock masses at low and intermediate level solid radioactive waste disposal, the paper builds two dimensional stochastic seepage grid model to describe radionuclide migration in fractured rock masses, sets up a rigorous computer simulating system to simulate the law of migration in the disposal field of low and intermediate level solid radioactive wastes based on computing technology. Finally, To illustrate the precision and validity of this model that is built into the stochastic mathematical theories and computing technology, the simulation experiments are carried out to understand law of radionuclide migration in the disposal field of low and intermediate level solid radioactive wastes.

Key words: low and intermediate level radioactive waste (ILRW) disposal field, radionuclide migration, stochastic process, porous medium, simulation