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2023 Vol.60, Issue 5S Preview Page

Technical Report

A Study on Previous Cases of Seismic Reflection Surveys for Deep Geological Disposal Site Investigations in Crystalline and Sedimentary Host Rocks

퇴적암반과 결정질암반에서의 심층처분장 부지조사를 위한 반사법탐사 사례 연구

Hyoung-Seok Kwon1*
,
Manho Han2
,
Yoon-Sup Moon3
,
Nam-Young Kong3
,
Seokhoon Oh4
권 형석1*
,
한 만호2
,
문 윤섭3
,
공 남영3
,
오 석훈4
1Research Institute for Earth Resources, Kangwon National University, Chuncheon, Korea
2HLW Technology Development Institute, KORAD, Daejeon, Korea
3Geogeny Consultunts Group Inc., Seoul, Korea
4Department of Energy and Resources Engineering, Kangwon National University, Chuncheon, Korea
1강원대학교 지구자원연구소
2한국원자력환경공단 고준위기술개발원
3㈜지오제니컨설턴트
4강원대학교 에너지자원공학과
*Corresponding Author
31 October 2023. pp. 414-428
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Abstract

Crystalline and sedimentary rocks are the preferred host rocks in deep repositories for spent nuclear fuels. This study examined the Swiss case of sedimentary rocks and Swedish and Canadian cases of crystalline rocks. In Switzerland, a reflection survey was used to identify the candidate host rock for the disposal site as the Opalinus clay formation and to create images of the boundaries of the Mesozoic sedimentary layers, including the Opalinus clay formation. A 3D reflection survey was conducted to determine the distribution and small-scale faulting of the Opalinus clay formation. Sweden conducted reflection surveys at the Forsmark site to obtain geological information on the deformation lenses within the site and to characterize the geology of the three deformation zones near the site. Canada conducted a reflection survey at the Ignace site to obtain information on its geological structure, including the location and dipping angles of the reflectors distributed in the vicinity of the site.

Keywords
reflection survey
geological disposal
site survey
sedimentary rock
crystalline rock

사용후핵연료 심층처분장 처분부지 모암으로 결정질암반과 퇴적암반이 선호되고 있다. 본 연구에서는 퇴적암반에서의 스위스 사례와 결정질암반에서의 스웨덴과 캐나다 사례를 검토하였다. 스위스는 반사법탐사 적용을 통해 처분부지 후보모암을 Opalinus clay 지층으로 결정하고 Opalinus clay 지층을 포함한 중생대 퇴적층의 경계를 고분해능으로 영상화하였다. 또한, 3차원 반사법탐사를 적용하여 Opalinus clay 지층의 분포와 소규모 단층 정보를 파악하였다. 스웨덴은 Forsmark 부지에 반사법탐사를 적용하여 부지 내부에 분포하는 변형구조 렌즈에 대한 지질학적인 정보를 파악하였으며, 부지인근에 분포하는 3가지 변형대에 대한 지질구조를 파악하였다. 캐나다는 Ignace 부지에 반사법탐사를 적용하여 부지 인근에 분포하는 반사체의 분포위치, 경사각 등 지질구조에 대한 정보를 파악하였다.

키워드
반사법탐사
심층처분
부지조사
퇴적암반
결정질암반
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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 : 60
  • No :5
  • Pages :414-428
  • Received Date : 2023-09-26
  • Revised Date : 2023-10-12
  • Accepted Date : 2023-10-26
  • DOI :https://doi.org/10.32390/ksmer.2023.60.5.414
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