Study of hydrogeology in the Mizunami Underground Research Laboratory Project; Hydrogeological modeling and groundwater flow simulation based on data of hydraulic and geochemical impacts during the construction of the MIU facilities; FY 2010

Hishiya, Tomoyuki*; Maemura, Tsuneyuki*; Kimura, Hitoshi*; Onoe, Hironori; Saegusa, Hiromitsu; Mizuno, Takashi

JAEA-Research 2013-023, 84 Pages, 2013/11

JAEA-Research-2013-023.pdf:11.72MB

In this study, hydrogeological modeling and groundwater flow simulations have been carried out in order to construct site descriptive model using data of hydraulic responses and groundwater chemistry changes until 460 m depth of MIU excavation. As a result of this study, the effect of hydraulic conductivity and flow porosity of hydrogeological structure to hydraulic and geochemical impacts due to the MIU excavation were confirmed. In addition, trend of inflow rate into the MIU facilities and hydraulic and geochemical impacts around the MIU Construction Site caused by the MIU construction could be reproduced.

A study on in-situ method for measuring unsaturated zone

Maemura, Tsuneyuki*; Hosono, Takayasu*

JNC TJ7400 2001-014, 169 Pages, 2002/02

JNC-TJ7400-2001-014.pdf:5.35MB

no abstracts in English

A study on in-situ measuring method of an unsaturated zone

Nishida, Kaoru*; Maemura, Tsuneyuki*

JNC TJ7400 2000-004, 102 Pages, 2000/02

JNC-TJ7400-2000-004.pdf:5.64MB

no abstracts in English

Preliminary analysis of long-term evolution for geological environment around drift in the Horonobe Underground Research Laboratory

Goke, Mitsuo*; Okihara, Mitsunobu*; Maemura, Tsuneyuki*; Yasuda, Ryo*; Matsui, Hiroya; Ozaki, Yusuke; Mochizuki, Akihito

no journal, , 

We performed the numerical simulation to simulate the long term change in geological environment under open drift condition. We developed the conceptual model for the purpose and performed the geomechanical and hydrological simulation with the models considering the existence of excavation damaged zone and tunnel support. The geomechanical simulation results suggested that the deformation for long term is so slight that the excavation damaged zone does not enlarge. The hydrological simulation considering the degassing predicted the expansion of the unsaturated zone in the high pore pressure domain.

A Case study by the numerical simulation for long term changing of the geological environment around a drift in Horonobe URL, 2; Hydrological simulation

Ito, Ryo*; Maemura, Tsuneyuki*; Matsui, Hiroya; Ozaki, Yusuke; Mochizuki, Akihito; Goke, Mitsuo*; Okihara, Mitsunobu*; Toguri, Satohito*

no journal, , 

The report summarized the hydrological simulation about a case study for long term changing of the geological environment around a drift in Horonobe URL.