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key scientific challenges in geological disposal of high level radioactive waste
Pages: 45-50
Year: Issue:  4
Journal: Engineering Sciences

Keyword:  GetLinkList(KeywordFilter('high level radioactive wastegeological disposalunderground research laboratory')'kw''CJFQ');
Abstract: The geological disposal of high level radioactive waste is a challenging task facing the scientific and technical world.This paper introduces the latest progress of high level radioactive disposal programs in the world,and discusses the following key scientific challenges:(1)precise prediction of the evolution of a repository site;(2)characteristics of deep geological environment;(3)behaviour of deep rock mass,groundwater and engineering material under coupled conditions(intermediate to high temperature,geostress,hydraulic,chemical,biological and radiation process,etc);(4)geochemical behaviour of transuranic radionuclides with low concentration and its migration with groundwater;and(5)safety assessment of disposal system.Several large-scale research projects and several hot topics related with high-level waste disposal are also introduced.
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