All Issue

2017 Vol.54, Issue 4 Preview Page

Technical Report (Special Issue)

Deep Geological Disposal of High-Level Radioactive Wastes and Coupled Thermal-Hydraulic-Mechanical-Chemical Analysis

고준위방사성폐기물 심지층처분과 열-수리-역학-화학적 연계해석 기술

Hyung-Mok Kim1*
,
Sangki Kwon2
김 형목1*
,
권 상기2
1세종대학교 에너지자원공학과
2인하대학교 에너지자원공학과
* Corresponding Author
31 August 2017. pp. 319-327
PDF XML Citation
Abstract

In this paper, coupled thermal-hydraulic-mechanical-chemical(THMC) processes to be considered in deep geological disposal of high-level radioactive wastes and their characteristics are introduced. We also investigated and introduced the characteristics of an excavation disturbed or damaged zone(EDZ) since the coupled THMC processes may concentrate and play a significant role in EDZ, where irreversible mechanical deformation is induced, considering that a crystalline rock is dominant in our geologic conditions. Numerical approach can be more effective in dealing with various uncertainties in individual process and parameters as well as long time period so that the types and properties of coupled analysis to simulate coupled THMC processes were identified as well.

Keywords
Deep geological disposal
Coupled THMC processes
Excavation disturbed zone(EDZ)
Coupled analysis
Long-term stability

본 논문에서는 고준위방사성폐기물의 심지층처분 과정에서 검토되어야 할 열-수리-역학-화학적 거동이 상호 연계되어 발생하는 THMC 복합 거동의 종류와 특징을 소개하였다. 결정질암이 주된 국내 지질조건을 고려할 때 처분 공동(tunnel) 주변에의 굴착에 의한 응력재분배로 인한 굴착영향 및 손상영역이 형성되어 THMC 복합 거동이 집중되므로 처분 공동 굴착과정에서 형성되는 굴착영향영역의 특징에 대해 검토하였다. 또한, THMC 복합 거동 평가를 위해 필요한 개별 거동 지배 인자 및 물성의 불확실성과 십만 년 이상의 오랜 기간 동안 이들 물성의 변화 및 경계/환경 조건의 변화를 효과적으로 평가할 수 있는 연계해석기법의 종류 및 특징을 파악하였다.

키워드
심지층처분
THMC 복합거동
굴착영향영역
연계해석
장기안정성
References
1
Bossart, P., Trick T., Meier P., and Mayor, J.C., 2004. Structural and hydrogeological characterisation of the excavation-dis-turbed zone in the Opalinum clay, Applied Clay Science, 26, 429-448.
10.1016/j.clay.2003.12.018
2
Cho, W.J., Kim, J.S., Lee, C., and Choi, H.J., 2012. Current status of the numerical models for the analysis of coupled thermal-hydrological-mechanical behavior of the engineered barrier system in a high-level waste repository, J. Korean Radioact. Waste Soc., 10(4), 281-294.
10.7733/jkrws.2012.10.4.281
3
Choi, H.K., 2014. Status of software development for multi- physics analysis, J. of the Koean Society of Mechanical Engineers, 54(6), 32-50.
4
Kim, H.M., Rutqvist, J., Jeong, J.H., Choi, B.H., Ryu, D.W., and Song, W.K., 2013. Characterizing excavation damaged zone and stability of pressurized lined rock caverns for underground compressed air energy storage, Rock Mechanics and Rock Engineering, 46, 1113-1124.
10.1007/s00603-012-0312-4
5
Kim, H.M., Ryu, D.W., and Synn, J.H., 2008. In-situ evaluation technique for hydraulic conductivity in excavation disturbed zone (EDZ), Tunnel and Underground Space, 18(2), 91-97.
6
Kim, J.S., Kwon, S., and Cho, W.J., 2009, An assessment of the excavation damaged zone in the KAERI underground research tunnel, Explosives & Blasting, 27(1), 21-31.
7
Kim, J.S., Kwon, S., Cho, W.J., and Cho, G.C., 2009. Characterization of an EDZ at KURT by using of Borehole Jack Tests, Prof. of the 2009 Korea-Japan Joint Symposium on Rock Engineering, Suwon, Korea, p.67-74.
8
Kwon, S.K., 2012. Underground disposal of radioactive waste, Magazine of Korean Tunnelling and Underground Space Association, 12(4), 32-48.
9
Lee, C., Kwon, S., Choi, J.W., and Jeon, S., 2011. An Estimation of the Excavation Damaged Zone at the KAERI Underground Research Tunnel, Tunnel and Underground Space, 21(5), 359-369.
10
Park, E.S., Martin, C.D., and Synn, J.H., 2008. Numerical evaluation of excavation damage zone around tunnels by using voronoi joint models, Tunnel and Underground Space, 18(5), 328-337.
11
Park, J.S., Ryu, D.W., Ryu, C.H., amd Lee, C.I., 2007, Groundwater Flow Analysis around Hydraulic Excavation Damaged Zone, Tunnel and Underground Space, 17(2), 109-118.
12
Park, J.W., Park, E.S., Lee, C.S., and Lee, J.W., 2016. Introduction of International Collaboration Project DECOVALEX-2019, Magazine of Korean Tunnelling and Underground Space Association, 18(3), 68-74.
13
Rutqvist, J., 2012. The geomechanics of CO2 storage in deep sedimentary formations, Int. J. Geotech. Geol. Eng., 30, 525-551.
10.1007/s10706-011-9491-0
14
Siren, T., Kantia, P., and Rinne, M., 2015. Considerations and observations of stress-induced and construction-induced excavation damage zone in crystalline rock, Int. J. Rock Mech. Min. Sci., 73, 165-174.
10.1016/j.ijrmms.2014.11.001
15
USNRC, 2011. Coupled processes workshop report, U.S. Nuclear Regulatory Commission, NRC-02-07-006, 76p.
16
Yasuhara, H., 2006. Thermo-Hydro-Mechano-Chemical couplings that define the evolution of permeability in rock fractures, Ph.D Thesis, The Pennsylvania State University, USA. 457p.
17
Yow, J.L. and Hunt, J.R., 2002. Coupled processes in rock mass performance with emphasis on nuclear waste isolation, Int. J. Rock Mech. Min. Sci., 39, 143-150.
10.1016/S1365-1609(02)00064-3
Information
  • Publisher :The Korean Society of Mineral and Energy Resources Engineers
  • Publisher(Ko) :한국자원공학회
  • Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
  • Journal Title(Ko) :한국자원공학회지
  • Volume : 54
  • No :4
  • Pages :319-327
  • Revised Date : 2017-08-15
  • Accepted Date : 2017-08-30
  • DOI :https://doi.org/10.12972/ksmer.2017.54.4.319
Journal Informaiton Journal of the Korean Society of Mineral and Energy Resources Engineers Journal of the Korean Society of Mineral and Energy Resources Engineers
Online Submission
  • NRF
  • KOFST
  • crossref crossmark
  • crossref cited-by
  • KCI 문헌 유사도 검사
  • orcid
  • open access
  • ccl
Journal Informaiton Journal Informaiton - close