Mizunami Underground Research Laboratory Project, Annual report in the 2001 fiscal year

not registered  ; Amano, Kenji  ; Saegusa, Hiromitsu; Sato, Toshinori  ; Takeuchi, Shinji; Nakama, Shigeo ; Hama, Katsuhiro 

The current geoscientific research of the Mizunami Underground Research Laboratory (MIU) Project have been carried out since the 1996 fiscal year at the Shobasama site in Akeyo-cho, Mizunami City, Gifu Prefecture. The main goals of the MIU Project are to establish appropriate methodologies for reliably investigating and assessing the deep subsurface, and to develop a range of engineering techniques for deep underground application in granite. The site for MIU construction was changed in January 2002, from the Shobasama site to city-owned land (MIU facility site) after lease contract with Mizunami city. The surface-based investigations at the MIU facility site have started since February 2002. The conceptual modeling work around the MIU facility site has started based on the information from the previous investigations of the Regional Hydrogeological Study and MIU project. Based on the conceptual model, the planning of geophysical survey and shallow borehole investigations has started. These investigations will be done in 2002 fiscal year. Hydrogeological modeling and groundwater flow analysis were performed in the study area (about 46 km around the Shobasama site). The preliminary analysis based on the rock mechanical model at the Shobasama site was performed to understand the behavior of deformation caused by the construction of shafts.