| dc.description.abstract | Deep geologic disposal is the most safe and feasibility of nuclear fuel final repository that have been evaluated and studied internationally.
Use the finite element software ABAQUS to simulate pressure analysis of the defective disposal canister, disposal of tunnel section excavation and seismic analysis and analysis of canister shear force.
In the pressure analysis of the defective disposal canister, the disposal canister model was established with reference to the Swedish SKB literature, and the defective simulation was carried out to investigate the effects of the disposal canister on the re-expansion pressure of the bentonite and the glacier load environment during the glacial period to verify with the literature, and carry out the impact analysis of the defect and analytical methods. As a result, counted the case analysis model of this study was similar to the literature model, and use the two-way delaminate mechanism at the defective position was closer to the reference case result.
In addition, in the excavation and seismic analysis of the disposal tunnel section is also refers to the domestic Taiwan power company’s report, establishes a two-dimensional model to simulate the stability of the tunnel under the excavation and utilization of the dynamic analysis of the rock, and then compare the principle stress on the recorded point and literature verification. And the impact analysis of boundary conditions, seismic loading methods and earthquake size. The results show that the quaked and unquaked results are nearly identical for the principle stress of the disposal tunnel.
Finally, in the analysis of the shear strength of the disposal canister, the present study the stress analysis of the shear force of the deep geologic disposal canister through the Swedish SKB report and the Taiwan power company’s report. The maximum allowable stress of the disposal canister is 395 MPa as defined by the relevant literature, so the shear analysis result of this study has a safety margin of 1.22.
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