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2026 Vol.36, Issue 3 Preview Page

Case Study

A Case Study on the Development of a Design Verification System for Shafts and Ramps in Deep Geological Repositories for High-Level Radioactive Waste

고준위방사성폐기물 심층처분시설 수직구 및 경사로의 설계적합성 검증체계 개발을 위한 사례 연구

Kyung-Kyu Park1
,
Seong-Jin Ahn1
,
Kyung-Ho Lim2
,
Eui-Seob Park3
,
Hyung-Mok Kim4*
박 경규1
,
안 성진1
,
임 경호2
,
박 의섭3
,
김 형목4*
1M.S. Student, Department of Energy Resources and Geosystems Engineering, Sejong University
2Vice President, BCMP Co., Ltd.
3Principal Researcher, Korea Institute of Geoscience and Mineral Resources
4Professor, Department of Energy Resources and Geosystems Engineering, Sejong University
1세종대학교 에너지자원공학과 석사과정
2㈜ BCMP 부사장
3한국지질자원연구원 책임연구원
4세종대학교 에너지자원공학과 교수
*Corresponding Author
30 June 2026. pp. 240-256
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Abstract

The access area of a deep geological repository for high-level radioactive waste is a key access facility for the transportation of personnel, equipment, materials, and waste, as well as for ventilation, drainage, emergency evacuation, and maintenance. During the excavation of the access area, typically represented by access ramps and shafts, host rock damage, groundwater inflow, excavation damaged zones (EDZs), and hydro-mechanical disturbances may occur. After closure, the access area may also act as a potential radionuclide flow pathway connecting the surface and the disposal area. Therefore, the design of the access area needs to be carefully reviewed from a proactive regulatory perspective in connection with structural stability, constructability, operational safety, post-closure long-term isolation performance, and quality assurance systems. In this study, domestic and international regulatory requirements and quality management items applicable to the access area were reviewed, and relevant cases from ONKALO in Finland and Forsmark in Sweden were analyzed. The results indicate that the design of the access area should comprehensively consider site conditions, disposal concepts, transportation and ventilation plans, groundwater inflow control, EDZ management, rock support and grouting plans, and post-closure sealing feasibility. Based on these findings, this study proposes a stepwise verification procedure and a design review checklist covering the access route system, access ramp, shafts, and common quality management items. The proposed verification procedure and checklist are expected to serve as basic reference materials for establishing a design suitability verification framework for the access area of future deep geological repositories and underground research facilities in Korea.

Keywords
Deep geological repository
Access facility
Access ramp
Shaft
Design suitability verification

고준위방사성폐기물 심층처분시설의 진입구역은 인력, 장비, 자재 및 폐기물 운송, 환기, 배수, 비상대피와 유지관리를 위한 핵심 접근시설이다. 경사진입로와 수직구로 대표되는 진입구역의 굴착 과정에서는 모암 손상, 지하수 유입, 굴착손상영역 및 수리·역학적 교란이 발생할 수 있으며, 폐쇄 후에는 지표와 처분구역을 연결하는 잠재적 핵종 유동경로로 작용할 가능성이 있다. 따라서 진입구역 설계는 구조적 안정성과 시공성뿐만 아니라 운영안전성, 폐쇄 후 장기 격리성능 및 품질보증 체계와 연계한 사전 규제적 관점에서 면밀하게 검토될 필요가 있다. 이를 위해 본 연구에서는 진입구역에 적용 가능한 국내외 규제요건과 품질관리 항목을 검토하고, 핀란드 ONKALO와 스웨덴 Forsmark의 관련 사례를 분석하였다. 분석 결과, 진입구역 설계는 부지조건, 처분개념, 운송·환기계획, 지하수 유입 제어, EDZ 관리, 지보 및 그라우팅 계획, 폐쇄 후 밀봉 가능성을 종합적으로 고려해야 함을 확인하였다. 이를 바탕으로 진입동선 체계, 경사진입로, 수직구 및 공통 품질관리 항목을 포함하는 단계적 검증 절차와 설계검토 체크리스트를 제안하였다. 제안된 검증절차와 체크리스트는 향후 국내 심층처분시설 및 지하연구시설의 진입구역 설계적합성 검증체계 구축을 위한 기초자료로 활용될 수 있을 것으로 판단된다.

키워드
심층처분시설
진입구역
경사진입로
수직구
설계적합성 검증
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Information
  • Publisher :Korean Society for Rock Mechanics and Rock Engineering
  • Publisher(Ko) :한국암반공학회
  • Journal Title :Tunnel and Underground Space
  • Journal Title(Ko) :터널과 지하공간
  • Volume : 36
  • No :3
  • Pages :240-256
  • Received Date : 2026-06-01
  • Revised Date : 2026-06-18
  • Accepted Date : 2026-06-22
  • DOI :https://doi.org/10.7474/TUS.2026.36.3.240
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