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Rock Mechanics Studies at the KAERI Underground Research Tunnel for High-Level Radioactive Waste Disposal  

Kwon, S. (한국원자력연구소 방사성폐기물처분연구팀)
Cho, W.J. (한국원자력연구소 방사성폐기물처분연구팀)
Publication Information
Tunnel and Underground Space / v.17, no.1, 2007 , pp. 43-55 More about this Journal
Abstract
An underground research tunnel, KURT, was constructed at Korea Atomic Energy Research Institute, for various in situ validation experiments related to the development of a high-level radioactive waste disposal system. KURT, which has length of 255 m (access tunnel 180 m and research modules 75 m) and size of $6m{\times}6m$ was excavated in a cryatalline rock mass. In the KURT project, different rock mechanics studies had been carried out during the concept design, site characterization, detailed design, and construction stages. From the geophysical survey, borehole investigation, and rock property tests in laboratory and in situ, the rock and rock mass properties required for the mechanicsl stability analysis of KURT could be achieved and used for the input parameters of computer simulations. In this paper, important results from the rock mechanics studies at KURT and the three-dimensional mechanical stability analysis will be introduced.
Keywords
KURT; HLW disposal; In situ tests; Stability analysis;
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