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http://dx.doi.org/10.7474/TUS.2022.32.6.530

A Study on Key Parameters and Distribution Range in Rock Mechanics for HLW Geological Disposal  

Dae-Sung, Cheon (Geology Division, Korea Institute of Geoscience and Mineral Resources)
Won-kyong, Song (Geology Division, Korea Institute of Geoscience and Mineral Resources)
You Hong, Kihm (Geology Division, Korea Institute of Geoscience and Mineral Resources)
Kwangmin, Jin (Geology Division, Korea Institute of Geoscience and Mineral Resources)
Seungbeom, Choi (Disposal Safety Evaluation Research Division, Korea Atomic Energy Research Institute)
Publication Information
Tunnel and Underground Space / v.32, no.6, 2022 , pp. 530-548 More about this Journal
Abstract
The site selection process for deep geological disposal of high-level radioactive waste will be conducted in stages, and 103 evaluation parameters related to site selection have been proposed. In the field of rock mechanics and rock engineering, there are 33 evaluation parameters for intact rock, joint and rock mass, and they are applied in the basic and detailed investigation stages. In this report, uniaxial compressive strength, in-situ stress, joint distribution, and rock mass classification were selected as the main evaluation parameters, and among them, uniaxial compressive strength and in situ stress were selected as key evaluation parameters. Statistical techniques or regression analysis were performed for granite in Wonju and Chuncheon to evaluate the distribution range for the selected key evaluation parameters. The average of the uniaxial compressive strength in the Wonju area estimated through the posterior distribution is about 171 MPa, and about 123 MPa in the Chuncheon area. The maximum in situ stress acting in the Wonju area was less than 30 MPa and less than 40 MPa in the Chuncheon area. The direction of the maximum horizontal stress calculated by regression analysis was 101° in Wonju, and in the case of Chuncheon, it was 95°, respectiviely.
Keywords
High-level radioactive waste; Site selection; Uniaxial compressive strength; In-situ stress; Statistical technique;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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