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Amemiya, Kiyoshi*; TRAN DUC PHI OAN*; Yamashita, Ryo*
JNC TJ8400 2000-056, 487 Pages, 2000/02
JNC-TJ8400-2000-056.pdf:16.24MB
JNC presented the 2
progressive reports on HLW disposal system. The documents impressed the importance of developing the engineering procedures and the model evaluating the thermo-hydro-mechanical phenomena in waste disposal system. In this research, the methods filling the gap between buffer and rock or buffer and overpack were examined. Bentonite pellets were tested as the filling materials. In order to assess the full-scale system performance, the Japanese experiences of buffer mass experiments were compared with the Prototype Repository Project of SKB in Sweden. Father more, the thermo-hydro-mechanical (THM) code named TRAMES was validated at the international co-research programs of DECOVALEX II.
Amemiya, Kiyoshi*; TRAN DUC PHI OAN*; Yamashita, Ryo*
JNC TJ8400 2000-055, 49 Pages, 2000/02
JNC-TJ8400-2000-055.pdf:4.15MB
JNC presented the 2 progressive reports on HLW disposal system. The documents impressed the importance of developing the engineering procedures and the model evaluating the thermo-hydro-mechanical phenomena in waste disposal system. In this research, the methods filling the gap between buffer and rock or buffer and overpack were examined. Bentonite pellets were tested as the filling materials. In order to assess the full-scale system performance, the Japanese experiences of buffer mass experiments were compared with the Prototype Repository Project of SKB in Sweden. Father more, the thermo-hydro-mechanical (THM) code named THAMES was validated at the international co-research programs of DECOVALEX II.
Amemiya, Kiyoshi*; TRAN DUC PHI OAN*; Yamashita, Ryo*
JNC TJ8400 99-053, 309 Pages, 1999/02
In the case of geological disposal of high level radioactive wastes, a coupled phenomenon involving thermal (T), hydrological (H), and mechanical (M) processes occurs in the buffer materials and surrounding rocks. This coupled phenomenon implies hydromechaical (HM) processes by heat dispersion, thermomechanical (IM) processes by ground water seepage, and thermohydrological (TH) processes by swelling of buffer materials and deformation of surrounding rocks. In order to understand the deep geological condition in fractured crystalline rock, JNC initiated the in-situ experiments in the Kamaishi Mine, where eally Cretaceous granodiorite hosts the experiments. The coupled thermo-hydro-mechanical (T-H-M) experiment in situ has been planned as a task of Kamaishi in-situ experiments in order to establish the coupled T-H-M conceptual models and to build up confidence to the mathematical models and computer codes. The T-H-M experiment has the following two test phases. The first is heating phase, and the second is cooling phase. Throughout the experiment, data concerning T-H-M phenomena was obtained. In this research the data is examined and analysis of T-H-M phenomena is performed. And the mechanical behavior of test pit is analyzed by using discontinuity deformation method. These results have been presented at the international co-operative research program. The shearing properties of buffer material are either examined.
Moro, Yoshiji*; Tran-Duc-Phi-Oanh*; Amemiya, Kiyoshi*
JNC TJ1400 2005-002, 260 Pages, 1998/03
JNC-TJ1400-2005-002.pdf:29.18MB
no abstracts in English