Thermo-mechanical Stability Analysis for a Multi-level Radioactive Waste Disposal Concept |
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| Authors: | Sangki Kwon Jong-Won Choi |
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| Institution: | (1) Korea Atomic Energy Research Institute, Duck-Jin Dong, Yusung Ku, Daejeon, Korea |
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| Abstract: | To dispose of the spent fuels generated from the Korean nuclear power plants in an underground repository, a large area of
about 4 km2 is required. This could be a constraint for selecting an adequate repository site and it is required to investigate the possibility
of a multi-level repository design. In this study different parameters related to the multi-level repository design such as
the level distance, waste type disposed of at each level, and the time interval between the operations at the levels, were
investigated using the three-dimensional code, FLAC3D. For obtaining more reliable results, rock properties measured from
deep boreholes were used. From the analysis, it was possible to conclude that a multi-level repository concept could be an
attractive alternative to reduce the underground area as well as to dispose of the spent fuels from Pressurized Water Reactors
(PWR) and Canadian Deuterium Uranium (CANDU) reactors at different levels with different time schedules. |
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| Keywords: | FLAC3D high level radioactive waste multi-level repository repository concept thermo-mechanical analysis |
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