Mizunami Underground Research Laboratory Project; Study on hydrogeology in crystalline fractured rock (Current status of long-term hydraulic pressure monitoring in Phase 2 )

Karino, Tomoyuki; Tsuyuguchi, Koji; Onoe, Hironori ; Sato, Seiji; Onuki, Kenji; Takeuchi, Ryuji  

In this paper, a part of the result of long-term hydraulic pressure monitoring during the URL excavation in Phase 2 of MIU project were introduced. And, trend of long-term groundwater pressure changes of monitoring boreholes in and around the MIU construction site due to the 2011 off the Pacific coast of Tohoku Earthquake were introduced.