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http://dx.doi.org/10.7474/TUS.2021.31.3.167

Introduction to Tasks in the International Cooperation Project, DECOVALEX-2023 for the Simulation of Coupled Thermohydro-mechanical-chemical Behavior in a Deep Geological Disposal of High-level Radioactive Waste  

Kim, Taehyun (Korea Atomic Energy Research Institute (KAERI))
Lee, Changsoo (Korea Atomic Energy Research Institute (KAERI))
Kim, Jung-Woo (Korea Atomic Energy Research Institute (KAERI))
Kang, Sinhang (Korea Atomic Energy Research Institute (KAERI))
Kwon, Saeha (Korea Atomic Energy Research Institute (KAERI))
Kim, Kwang-Il (Korea Atomic Energy Research Institute (KAERI))
Park, Jung-Wook (Korea Institute of Geoscience and Mineral Resources (KIGAM))
Park, Chan-Hee (Korea Institute of Geoscience and Mineral Resources (KIGAM))
Kim, Jin-Seop (Korea Atomic Energy Research Institute (KAERI))
Publication Information
Tunnel and Underground Space / v.31, no.3, 2021 , pp. 167-183 More about this Journal
Abstract
It is essential to understand the complex thermo-hydro-mechanical-chemical (THMC) coupled behavior in the engineered barrier system and natural barrier system to secure the high-level radioactive waste repository's long-term safety. The heat from the high-level radioactive waste induces thermal pressurization and vaporization of groundwater in the repository system. Groundwater inflow affects the saturation variation in the engineered barrier system, and the saturation change influences the heat transfer and multi-phase flow characteristics in the buffer. Due to the complexity of the coupled behavior, a numerical simulation is a valuable tool to predict and evaluate the THMC interaction effect on the disposal system and safety assessment. To enhance the knowledge of THMC coupled interaction and validate modeling techniques in geological systems. DECOVALEX, an international cooperation project, was initiated in 1992, and KAERI has participated in the projects since 2008 in Korea. In this study, we introduced the main contents of all tasks in the DECOVALEX-2023, the current DECOVALEX phase, to the rock mechanics and geotechnical researchers in Korea.
Keywords
DECOVALEX; International research collaboration; Code validation; Coupled ThermoHydro-Mechanical and Chemical behavior; Deep geological disposal of high-level radioactive waste;
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