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Thermohydromechanical Behavior Study on the Joints in the Vicinity of an Underground Disposal Cavern  

Jhin wung Kim (한국원자력연구소 방사성폐기물처분연구부)
Dae-seok Bae (한국원자력연구소 방사성폐기물처분연구부)
Publication Information
The Journal of Engineering Geology / v.13, no.2, 2003 , pp. 171-191 More about this Journal
Abstract
The objective of this present study is to understand long term(500 years) thermohydromechanical interaction behavior on joints adjacent to a repository cavern, when high level radioactive wastes are disposed of within discontinuous granitic rock masses, and then, to contribute this understanding to the development of a disposal concept. The model includes a saturated discontinuous granitic rock mass, PWR spent nuclear fuels in a disposal canister surrounded with compacted bentonite inside a deposition hole, and mixed bentonite backfilled in the rest of the space within a repository cavern. It is assumed that two joint sets exist within a model. Joint set 1 includes joints of $56^{\circ}$ dip angle, spaced 20m apart, and joint set 2 is in the perpendicular direction to joint set 1 and includes joints of $34^{\circ}$ dip angle, spaced 20m apart. The two dimensional distinct element code, UDEC is used for the analysis. To understand the joint behavior adjacent to the repository cavern, Barton-Bandis joint model is used. Effect of the decay heat from PWR spent fuels on the repository model has been analyzed, and a steady state flow algorithm is used for the hydraulic analysis.
Keywords
radwaste repository; granite; spent fuel; thermohydromechanical interaction behavior; joint;
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  • Reference
1 Coupled thermal- hydraulic-mechanical phenomenon in saturated fractured porous rocks-numerical approach /
[ Noorishad,J.;Tsang,C.F.;Witherspoon,P.A. ] / Jour. Geophy. Res.
2 Rock mass response to glaciation and thermal loading from nuclear waste /
[ Shen,B.;Stephansson,O. ] / Proc. GEOVAL-90 Symp.
3 Results from pre-investigations and detailed site characterization: Summary Report, Aspo HRL-Geoscientific Evaluation 1997/2 /
[ SKB ] / SKB Technical Report 97-04
4 Distinct element modeling of joint behavior in nearfield rock /
[ Hokmark,H.;Israelsson,I. ] / Stripa Project 91-22
5 Results from pre-investigations and detailed site characterizations: Summary Report, Aspo HRL-Geoscientific Evaluation 1997/2 /
[ SKB ] / SKB Technical Report 97-03
6 /
[ Itasca Consulting Group, Inc. ] / DEC(Universal Distinct Element Code), Version 3.0
7 Coupling behavior of rock joints /
[ Tsang,C.F.;N.Barton(ed.);O.Stephansson(ed.) ] / Rock Joints
8 Rock mechanical, thermomechanical, and hydraulic behavior of the near field for spent nuclear fuel /
[ Johansson,E.;Hakala,M.;Lorig,L.J. ] / Report YJT-91-21, TVO
9 Distinct element method of fracture behavior in near field rock /
[ Hokmark, H. ] / Stripa Project 91-01
10 A fully coupled thermal-mechanical fluid flow model for nonlinear geololgic system /
[ Hart,R.D. ] / PhD. Thesis, Univ. of Minn.
11 /
[ Kang,C.H.(et al.) ] / Preliminary conceptual design and performance assessment of a deep geological repository for high level wastes in the Republic of Korea