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Analysis of Benchmark Test Model for Evaluation of Damage Characteristics of Rock Mass near Radioactive Waste Repository  

Lee, Hee-Suk (SK건설 GSUC팀)
Publication Information
Tunnel and Underground Space / v.17, no.1, 2007 , pp. 32-42 More about this Journal
Abstract
Severe damage can occur around deposition holes due to complex interaction of thermo-hydro-mechanical (THM) loading during the long term operation of high level radioactive waste repository. Many candidate sites for repository are located in crystalline rock mass, therefore mechanism of damage follows the form of brittle fracture and failure. This paper briefly introduces major outcomes from 15 years international collaborative project, DECOVALEX, and presents major study results for current ongoing benchmark test study from DECOVALEX-THMC, to evaluate the effect of THM loading to rock mass in excavation damaged zone (EDZ) near deposition holes. Through benchmark test model by simplifying THM loading to boundary loading obtained numerical results are compared, and discrete fracture interaction after up to 1 million years operation is discussed.
Keywords
High level radioactive waste; thermo-hydro-mechanical coupling; excavation damaged zone (EDZ); DECOVALEX project; rock fracture;
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  • Reference
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