Flow-Path Structure in Relation to Nuclide Migration in Sedimentary Rocks. An Approach with Field Investigations and Experiments for Uranium Migration at Tono Uranium Deposit, Central Japan.

• YOSHIDA Hidekazu

  Tono Geoscience Center, Power Reactor and Nuclear Fuel Development Corp.

• YUI Mikazu

  Tokai Works, Power Reactor and Nuclear Fuel Development Corp.

• SHIBUTANI Tomoki

  Tokai Works, Power Reactor and Nuclear Fuel Development Corp.

書誌事項

タイトル別名

• An Approach with Field Investigations and Experiments for Uranium Migration at Tono Uranium Deposit, Central Japan

抄録

The migration of natural uranium in geosphere has been studied at Tono uranium deposit, located in the Gifu Prefecture, central Japan. Geological and geochemical investigations have been carried out, as well as laboratory experiments, in order to characterize those structural and geochemical factors governing nuclide migration and to develop a conceptual nuclide migration model in sedimentary rocks. The results can be summarized as : <BR>(1) Micro-fractures within quartz grains, cleavages of detrital biotite flakes, and pores between detrital grains play an important role in nuclide migration, both as pathways and retention sites. Natural feature of uranium concentration in minerals and hydrogeological estimations suggest that diffusion may also exert a significant role on nuclide migration. <BR>(2) Flow-path structures, e.g. connectivity of pores, influence the sorption capacity of the host formation. Connectivity of pores probably change the number of accessible sorption sites along the flow-path in the sedimentary rocks.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　Ｎｕｃｌｅａｒ　Ｓｃｉｅｎｃｅ　ａｎｄ　Ｔｅｃｈｎｏｌｏｇｙ（日本原子力学会英文論文誌）

  Ｊｏｕｒｎａｌ　ｏｆ　Ｎｕｃｌｅａｒ　Ｓｃｉｅｎｃｅ　ａｎｄ　Ｔｅｃｈｎｏｌｏｇｙ（日本原子力学会英文論文誌） 31 (8), 803-812, 1994

  一般社団法人 日本原子力学会

キーワード

• adionuclide migration
• uranium
• grain boundaries
• sedimentary rocks
• geometrical factor
• geochemical factor
• impregnation experiment
• hydraulic conductivities
• flow-path structure
• pores
• sorption
• diffusion

詳細情報

• CRID: 1390001204094938624
• NII論文ID: 130000825671
• DOI: 10.3327/jnst.31.803
• COI: 1:CAS:528:DyaK2cXlvV2lsbc%3D
• ISSN: 18811248
• ISSN: 00223131
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可