Study on borehole sealing corresponding to hydrogeological structures by groundwater flow analysis

Sawaguchi, Takuma; Takai, Shizuka; Sasagawa, Tsuyoshi; Uchikoshi, Emiko*; Shima, Yosuke*; Takeda, Seiji

MRS Advances (Internet), 8(6), p.243 - 249, 2023/06

https://doi.org/10.1557/s43580-023-00528-y

In the intermediate depth disposal of relatively high-level radioactive waste, a method to confirm whether the borehole for monitoring is properly sealed should be developed in advance. In this study, groundwater flow analyses were performed for the hydrogeological structures with backfilled boreholes, assuming sedimentary rock area, to understand what backfill design conditions could prevent significant water pathways in the borehole, and to identify the confirmation points of borehole sealing. The results indicated the conditions to prevent water pathways in the borehole and BDZ (Borehole Disturbed Zone), such as designing the permeability of bentonite material less than or equal to that of the host rock, and grouting BDZ.

Methodology of safety assessment and sensitivity analysis for geologic disposal of high-level radioactive waste

Kimura, Hideo; Takahashi, Tomoyuki; ; Matsuzuru, Hideo

Journal of Nuclear Science and Technology, 32(3), p.206 - 217, 1995/03

https://doi.org/10.3327/jnst.32.206

no abstracts in English

The MIG2DF computer code users manual

Kimura, Hideo

JAERI-M 92-115, 48 Pages, 1992/08

JAERI-M-92-115.pdf:1.06MB

no abstracts in English

Effect of Mineralization Reaction on the Radionuclide Transport Through Geologic Media

; *; T.H.Pigford*

JAERI-M 9184, 39 Pages, 1980/11

JAERI-M-9184.pdf:1.05MB

no abstracts in English

Microscopic pore structure and macroscopic fluid flow-chemical transport in host rocks and barrier materials

Wang, Q. M.*; Hu, Q.*; Zhao, C.*; Zhang, T.*; Fukatsu, Yuta; Tachi, Yukio

no journal, ,