【摘要】 甘肃北山野马泉地区是我国高放废物处置库预选场址之一。文章阐述高放废物处置库天然类比研究的主要内容,并阐述类比研究中涉及的地球化学问题。以野马泉岩体为例,研究地下水铀、钍含量及放射性特征、铀同位素特征。初步认为,在当地的地质、水文地质等环境条件下,铀的迁移能力有限,迁移距离较小。这一认识为预选场址评价提供了重要的信息和依据。更多还原

【Abstract】 Yemaquan region in Beishan area,Gansu Province,is one of the preselected sites of disposal repository for high-level radioactive waste(HLW) in our country.The main content of natural analogue research of high-level waste disposal repository was introduced in the paper.The major geochemical issues related to the analogue research were described.Taking Yemaquan rock body as an example,U,Th,radioactive features and U isotopes of groundwater were studied.The result shows that the migration ability and distance of U are very limited in the geological,hydrogeological environmental conditions.This cognition provides very important information and basis for the evaluation of Yemaquan preselected site.更多还原