Modelling transport pathways of faults with low hydraulic connectivity in mudstones with low swelling capacity

Ono, Hirokazu ; Ishii, Eiichi ; Takeda, Masaki

Faults in some deep mudstones have poor hydraulic connectivity owing to high normal stress on the fault planes. Designing a method for modeling solute transport pathways in such faults/fractures using available data is a critical issue vis-a-vis the safety assessment of radioactive waste disposal. In this study, faults in deep siliceous mudstones with low swelling capacity are investigated using cross-hole hydraulic and tracer tests between two boreholes. These results indicate that transport pathways in faults with low hydraulic connectivity can be modeled using a highly tortuous 1D pipe flow path.

Language	:	English
Journal	:	Geoenergy (Internet)
Volume	:	2
Number	:	1
Pages	:	p.geoenergy2023-047_1 - geoenergy2023-047_10
Publication Year/Month	:	2024/12
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Paper URL	:	https://doi.org/10.1144/geoenergy2023-047
DOI for research data	:	Link to research data related to this paper/report.
Keywords	:	no keyword
Research Facility	:	深地層研究所
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Registration No. : AA20230547
JAEA Abstracts No. : 52001167
Paper Submission No. : 28580

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