グリムゼル花崗閃緑岩の単一割れ目中の核種移行特性評価,1; 室内試験

Radionuclide migration in single fracture of granodiorite at Grimsel Test Site, 1; Laboratory

赤木 洋介*; 舘 幸男  ; 根本 一昭; Martin, A.*

Akagi, Yosuke*; Tachi, Yukio; Nemoto, Kazuaki; Martin, A.*

結晶質岩の亀裂中核種移行モデルの確証に資するため、スイスグリムゼル原位置試験場から採取した単一割れ目を含む花崗閃緑岩試料を対象に、セシウム等をトレーサーとする透過拡散試験とバッチ収着試験、及び割れ目中定流量通液試験を実施し、割れ目部とマトリクス部での収着・拡散特性を定量的に評価した。

To validate radionuclide migration model in single fracture in crystalline rocks, the granodiorite sample with single fracture from the Grimsel Test Site in Switzerland was investigated. The migration behaviors of tracers including cesium in fracture and matrix parts were evaluated quantitatively by series of laboratory experiments including batch sorption, through-diffusion and flow-through experiments.