Model development on the coupled Thermo-Hydro-Mechanical and Chemical (THMC) process, 1; Validation of coupled T-H model based on the results of in-room experiment

Fujisaki, Kiyoshi; Suzuki, Hideaki; Fujita, Tomoo ; Naito, Morimasa ; Yui, Mikazu

Near a high-level radioactive waste repository after emplacement of engineered barriers, coupled thermo-, hydro-, mechanical, and chemical (T-H-M-C) processes will occur. To predict these phenomena quantitatively and improve reliability in assessing the design and the long term performance of engineered barriers, JAEA has developed a coupled thermo-, hydro-, mechanical, and chemical (T-H-M-C) analysis model / code. In this report, authors evaluated the applicability of coupled T-H model under the condition of simulated near-field, based on the results of in-room coupled experiment. As a result, it has shown that the model which improved the fit to the measured data, is reasonable under this condition.