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Takase, Hiroyasu*; Inagaki, Manabu*; Noguchi, Toshihide*; Shimaoka, Akiko*; Martin, A. J.*; Wakamatsu, Hisanori*; Takase, Kyoko*; Tabara, Michiko*; Matsui, Hiroya
JAEA-Research 2007-066, 215 Pages, 2007/08
JAEA-Research-2007-066-01.pdf:43.05MBJAEA-Research-2007-066-02.pdf:58.73MBJAEA-Research-2007-066-03.pdf:13.08MB
In this study a systematic approach to explicitly address type and size of uncertainties associated with safety assessment due mainly to incomplete knowledge on a spatially heterogeneous geological environment was developed. In this approach a wide range of model variations including the ones with relatively law plausibility are taken into account so that ambiguity remaining in the knowledge is illustrated, which is a distinctive feature of the approach compared with the conventional methodology where only a limited number of best plausible model variations are considered. The study also proposed an approach to assessing plausibility of each model variation based on multiple pieces of evidence by using evidential support logic (ESL). Furthermore the approach was applied to Horonobe area to demonstrate its applicability to the similar class of geological environment as an example.
Takase, Hiroyasu*; Noguchi, Toshihide*; Wakamatsu, Hisanori*; Martin, A. J.*; Yamada, Kazuhiro*; Takase, Kyoko*; Tabara, Michiko*
JNC TJ5400 2005-001, 200 Pages, 2005/03
JNC-TJ5400-2005-001.pdf:57.24MB
In the Horonobe deep geological formation research plan, in order to improve confidence in disposal technology and safety assessment methods, research is being done connected with disposal technology and safty assessment. This research concerns the geological environmental acquired during investigations from the surface to the deep sub-surface and the geological model constructed using these data.Inthe current study groundwater flow and mass transport analysis have been conducted taking into account uncertainties associated with the coceptual model for geological environment in Horonobe area that was constructed by using data acquired during the investigation from ground surface. In addition a number of scoping calculations were made to support planning of the in-situ experiments.
Takase, Hiroyasu*; Metcalfe, R.*; Inagaki, Manabu*; Noguchi, Toshihide*; Aoyama, Yuji*; Takase, Kyoko*; Tabara, Michiko*
JNC TJ5400 2003-006, 264 Pages, 2004/02
JNC-TJ5400-2003-006(errata).pdf:0.08MBJNC-TJ5400-2003-006-1.pdf:83.88MBJNC-TJ5400-2003-006-2.pdf:15.97MB
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