Explosives and Blasting (화약ㆍ발파)

Korean Society of Explosives and Blasting Engineering (대한화약발파공학회)
권호 표지

Status of Researches of Excavation Damaged Zone in Foreign Underground Research Laboratories Constructed for Developing High-level Radioactive Waste Disposal Techniques

고준위방사성폐기물 처분 기술개발을 위해 건설된 해외 지하연구시설에서의 암반손상대 연구 현황

  • 박승훈 (인하대학교 에너지자원공학과) ;
  • 권상기 (인하대학교 에너지자원공학과)
  • Received : 2017.08.31
  • Accepted : 2017.09.13
  • Published : 2017.09.30
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Abstract

In the countries operating nuclear reactors, the development of high-level radioactive waste(HLW) disposal technique is considered as an urgent and important issue for sustainable utilization of nuclear energy. In Korea, in which a low and intermediate radioactive waste repository is already operating, the construction of an underground research laboratory for in situ validation studies became a matter of interest with increasing concerns on the management of HLW. In order to construct and to operate an underground HLW repository safely in deep underground, the stability of rock mass should be guaranteed. As an important factor on rock stability, excavation damaged zone (EDZ) has been studied in many underground research laboratories in foreign countries. For accurate evaluation of the characteristics and effects of EDZ under disposal condition, it is required to use reliable investigation method based on the analysis of previous studies in similar conditions. In this study, status of foreign underground research laboratories in other countries, approaches for investigation the characteristics, size, and effect of EDZ, and major findings from the researches were surveyed and reported. This will help the accomplishment of domestic researches for developing HLW management techniques in underground research laboratory.

원자로가 운영되는 국가에서는 고준위방사성폐기물 처분을 위한 관련 기술개발은 지속적인 원자력에너지의 이용을 위해 시급한 해결해야할 중요한 사안으로 여겨지고 있다. 이미 중저준위처분장이 운영 중인 국내에서는 고준위방사성폐기물의 관리에 대한 관심이 높아지면서 현장실증 연구를 위한 지하연구시설 건설에 대한 관심도도 높아지고 있다. 지하심부 암반에 고준위방사성 폐기물 처분장을 건설, 운영하기 위해서는 암반 안정성이 보장되어야 한다. 암반손상대는 처분장 암반 안정성에 영향을 미치는 요소로써 해외 각국의 지하연구시설에서는 다양한 암반손상대 연구가 수행되었다. 처분 환경에서 암반손상대의 특성과 영향을 정확히 평가하기 위해서는 유사한 환경에서 기 수행된 연구 결과의 분석을 바탕으로 신뢰도 높은 조사 방법의 사용이 요구된다. 본 연구에서는 세계 각국에 건설된 지하연구시설의 현황과 암반손상대의 규모, 특성, 영향에 대한 연구 방법 및 주요 연구결과를 조사, 보고하였다. 이는 고준위폐기물 관리기술 개발을 위해 수행될 지하연구시설을 활용한 국내 관련 연구의 수행에 기여할 것으로 판단된다.

Keywords

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