Radionuclide and colloid migration experiments under deep geological conditions in the underground research laboratory, canada

摘要

In concepts for the disposal of high level wastes, one of the roles of the geosphere is to serve as a natural barrier to radionuclide migration by retarding the movement of any radionuclides released form the waste to the biosphere. Retardation of radionuclide trnsoprt results form the interaction of dissolved radionuclides with the minerals present in fractures that form flow paths for the groundwater and with the surfaces of the interconnected pore s pace in the rock matrix surrounding a disposal vault.