[1H14-17] Solutes Transport

[1H17] Geochemical condition and solutes transport property around a closure tunnel

*Teruki Iwatsuki¹, Kazuki Hayashida¹, Hiroaki Murakami¹, Yusuke Watanabe¹ (1. JAEA)

Keywords:Simulated drift closure test, Granitic rock, Groundwater, Geochemical change, Behavior of rare earth elements

Geochemical condition and solutes transport property in and around a simulated closure tunnel were studied by observing the behavior of REEs at Mizunami underground research laboratory. Results show that the REEs in the closure tunnel tend to be immobilized by absorbing to shotcrete and the colloidal flocculation.