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Sugita, Kenichiro*
JNC TJ7400 2005-002, 177 Pages, 2005/03
JNC-TJ7400-2005-002.pdf:2.14MBJNC-TJ7400-2005-002(errata).pdf:0.08MB
This report describes the development of a method for the classification of geochemical data quality. The project had four tasks: (1)review of quality information; (2)development of Evidence Support Logic (ESL) models; (3)development of rules for choosing parameter values; (4)classification of existing data. These process models have been applied to data from boreholes KNA-6, DH-7, DH-12, MIU-4, DH-2, MSB-2, MSB-4, MIZ-1 and DH-15. The process models provide a visualisation of data quality judgements that may be appraised rapidly. The models can be revised readily as and when additional quality information becomes available, or to reflect the differing opinions of different experts concerning data quality.
Sugita, Kenichiro*; Dershowitz, W.*
JNC TJ8440 2005-011, 376 Pages, 2005/01
JNC-TJ8440-2005-011.pdf:16.46MB
During Heisei-16, Golder Associates provided support for JNC Tokai through discrete fracture network data analysis and simulation of the Mizunami Underground Research Laboratory (MIU), participation in Task 6 of the 
sp
Task Force on Modeling of Groundwater Flow and Transport, and development of methodologies for analysis of repository site characterization strategies and safety assessment. MIU support during H-16 involved updating the H-15 FracMan discrete fracture network (DFN) models for the MIU shaft region, and developing improved simulation procedures. Updates to the conceptual model included incorporation of "Step2" (2004) versions of the deterministic structures, and revision of background fractures to be consistent with conductive structure data from the DH-2 borehole. Golder developed improved simulation procedures for these models through the use of hybrid discrete fracture network (DFN), equivalent porous medium (EPM), and nested DFN/EPM approaches. For each of these models, procedures were documented for the entire modeling process including model implementation, MMP simulation, and shaft grouting simulation. Golder supported JNC participation in Task 6AB, 6D and 6E of the sp Task Force on Modeling of Groundwater Flow and Transport during H-16. For Task 6AB, Golder developed a new technique to evaluate the role of grout in performance assessment time-scale transport. For Task 6D, Golder submitted a report of H-15 simulations to SKB. For Task 6E, Golder carried out safety assessment time-scale simulations at the block scale, using the Laplace Transform Galerkin method. During H-16, Golder supported JNC's Total System Performance Assessment (TSPA) strategy by developing technologies for the analysis of the use site characterization data in safety assessment. This approach will aid in the understanding of the use of site characterization to progressively reduce site characterization uncertainty.
Sugita, Kenichiro*; Takase, Hiroyasu*
JNC TJ7440 2005-080, 105 Pages, 2004/03
JNC-TJ7440-2005-080.PDF:3.41MB
no abstracts in English
Sugita, Kenichiro*; Dershowitz, W. S.*
JNC TJ7400 2005-060, 73 Pages, 2004/03
JNC-TJ7400-2005-060.PDF:2.48MB
None
Sugita, Kenichiro*; Dershowitz, W.*
JNC TJ8440 2004-010, 287 Pages, 2004/01
JNC-TJ8440-2004-010.pdf:44.13MB
During Heisei-15, Golder Associates provided support for JNC Tokai through discrete fracture network data analysis and simulation of the MIU Underground Rock Laboratory, participation in Task 6 of the Aspo Task Force on Modelling of Groundwater Flow and Transport, and development of methodologies for analysis of repository site characterization strategies and safety assessment.
Sugita, Kenichiro*; Metcalfe, R.*
JNC TJ7400 2005-073, 181 Pages, 2003/03
JNC-TJ7400-2005-073.PDF:7.43MB
This document is the report of a project to develop a coupled geochemical/hydrogeological model of the groundwater system in the Tono area of Gifu ken, central Japan. a major outcome of the work has been identify alternative possible origins for the Na-(Ca)-Cl dominated groundwater salinity in the southern part of the study area.
Sugita, Kenichiro*; Dershowitz, W.*
JNC TJ8440 2003-005, 512 Pages, 2003/01
JNC-TJ8440-2003-005.pdf:45.53MB
During Heisei-14, Golder Associates provided support for JNC Tokai through data analysis and simulation of the MIU Underground Rock Laboratory, participation in Task 6 of the Aspo Task Force on Modelling of Groundwater Flow and Transport, and analysis of repository safety assessment technologies including cell networks for evaluation of the disturbed rock zone (DRZ) and total systems performance assessment (TSPA).