摘要(英) |
The final repository will be affected by the earthquake and high temperature generated by the decay heat. In order to ensure the safety of the final disposal site, prior analysis is extremely important. This thesis mainly focuses on the shear force and thermal stress in the disposal site.
First , the analysis of the shear force in the disposal canister is according to the Swedish SKB report and the Taipower report. This study was verified in parallel with the Taipower report. Two cases exceeded the maximum allowable stress 395MPa defined in the SKB report, which may lead to undesirable results in the canister. Therefore, we cannot completely rule out the possibility of this situation.
Secondly, the thermal load generated by the existence of decay heat changing the stress and strain in the repository. This study refers to the Swedish SKB report to analyze multiple cases, and conducts parallel verification of temperature and stress with SKB. Next, The analysis of the Thermally induced earthquake in repository shows that the evolution of thermal stress may have less influence on the faults around repository during the earthquake.
Finally, in order to be more realistic, we built the two-dimensional model into a three-dimensional repository model with the same size of length and width. This study conducted heat transfer analysis, analyzed the differences between the two-dimensional and three-dimensional repository. The difference between 2D and 3D model’s result is that the temperature far from the canister is 4 degrees Celsius lower than the 2D model’s result. |
參考文獻 |
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