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http://dx.doi.org/10.7733/jkrws.2012.10.4.281

Current Status of the Numerical Models for the Analysis of Coupled Thermal-Hydrological-Mechanical Behavior of the Engineered Barrier System in a High-level Waste Repository  

Cho, Won-Jin (Korea Atomic Energy Research Institute)
Kim, Jin Seop (Korea Atomic Energy Research Institute)
Lee, Changsoo (Korea Atomic Energy Research Institute)
Choi, Heui-Joo (Korea Atomic Energy Research Institute)
Publication Information
Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT) / v.10, no.4, 2012 , pp. 281-294 More about this Journal
Abstract
The current status of the computer codes for the analysis of coupled thermal-hydrological-mechanical behavior occurred in a high-level waste repository was investigated. Based on the reported results on the comparison between the predictions using the computer codes and the experimental data from the in-situ tests, the reliability of the existing computer codes was analyzed. The presented codes simulated considerably well the coupled thermal-hydrological-mechanical behavior in the near-field rock of the repository without buffer, but the predictions for the engineered barrier system of the repository located at saturated hard rock were not satisfactory. To apply the current thermal-hydrological-mechanical models to the assessment of the performance of engineered barrier system, a major improvement on the mathematical models which analyze the distribution of water content and total pressure in the buffer is required.
Keywords
Thermal-hydrological-mechanical behavior; High-level waste repository; Engineered barrier system; Numerical model; Validation;
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