高放废物地质处置天然类比研究——以某铀矿床地下水为例  

A natural analogy of high-level radioactive waste disposal——a case study of the groundwater from a uranium deposit

作　　者：李新春[1] 张展适[1] 欧阳荷根[1] 

机构地区：[1]东华理工大学土木与环境工程学院,江西抚州344000

出　　处：《铀矿冶》2009年第1期26-30,共5页Uranium Mining and Metallurgy

基　　金：国家自然科学基金项目(40772068);核废物地质处置项目(高放废物地质处置条件下放射性核素迁移的地球化学实验和理论模型研究);国家社会公益研究专项资助项目(2005DIB21221)

摘　　要：放射性核素的迁移是高放废物处置研究的核心问题,而地下水被认为是核素迁移的主要途径。以某铀矿床地下水中稀土元素、铀等微量元素作为化学类似物,类比研究放射性核素的迁移问题。研究结果表明,该铀矿床自形成以来稀土及其类似物会随地下水迁移,放射性核素铀并未随地下水发生明显的迁移。大致可以类比说明一旦地下水浸泡了核废物场址库,有可能会浸泡出处置库中的稀土元素及其类似物,而核素铀并未随地下水发生明显迁移。这一结果可以提高人们对于高放废物处置的信心。Radionuclide migration is one of the key effects of high-level radioactive waste disposal. The groundwater is considered the primary means of radionuclide migration. Uranium and rare earth element（REE） in groundwater from a uranium deposit were used as a chemical analogue to study the migration of radionuclides. The results show that REE and its chemical analogue might migrate under the uranium deposit condition, but uranium and its analogue do not migrate obviously. According to the results, we might infer that after the groundwater penetrates into the HLW repository, REE and its analogue might migrate with the groundwater; but there is no obvious migration of uranium and its chemical analogue, which might increase our confidence to built a safe HLW repository.

关 键 词：铀矿床 地下水 高放废物 地质处置 天然类比 

分 类 号：X591[环境科学与工程—环境工程]