Browse > Article

The Inflence of Excavation Damaged Zone around an Underground Research Tunnel in KAERI  

Kwon, S. (한국원자력연구원)
Kim, J.S. (한국원자력연구원)
Cho, W.J. (한국원자력연구원)
Publication Information
Explosives and Blasting / v.26, no.2, 2008 , pp. 11-19 More about this Journal
Abstract
The development of an excavation damaged zone, EDZ, due to the blasting impact and stress redistribution after excavation, can influence on the long tenn stability, economy, and safety of the underground excavation. In this study, the size and characteristics of an EDZ around an underground research tunnel, which was excavated by controlled blasting, in KAERI were investigated. The results were implemented into the modelling for evaluating the influence of an EDZ on hydro-mechanical behavior of the tunnel. From in situ tests at KURT, it was possible to determine that the size of EDZ was about l.5rn. Goodman jack tests and laboratory tests showed that the rock properties in the EDZ were changed about 50% compared to the rock properties before blasting. The size and property change in the EDZ were implemented to a hydro-mechanical coupling analysis. In the modeling, rock strengths and elastic modulus were assumed to be decreased 50% and. the hydraulic conductivity was increased 1 order. From the analysis, it was possible to see that the displacement was increased while the stress was decreased because of an EDZ. When an EDZ was considered in the model, the tunnel inflow was increased about 20% compared to the case without an EDZ.
Keywords
Excavation damaged zone; KURT; Blasting impact; Radioactive waste repository; HM modelling;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
연도 인용수 순위
1 권상기, 조원진, 2008, 지하처분연구시설에서의 암반 손상대 발생 및 영향 평가, KAERI/TR-3511/2008
2 최병희, 정주환, 신중호, 조철현, 2008, 탄성파 탐사법 을 활용한 광산갱도 주벽의 발파손상대 평가, 대한화 약발파공학회 춘계학술발표회 논문집, 한국과학기술 회관, pp.21-31
3 Kwon, S., Cho, W.J., and Han, P.S., 2006, Concept development of an underground research tunnel for validating the Korean reference HLW disposal system, Tunnelling and Underground Space Technology, Vol. 21, pp.203-217   DOI   ScienceOn
4 권상기, 조원진, 김득수, 2005, 한국원자력연구소내 지하처분연구시설 건설에 따른 발파영향, 화약･발파 (대한화약발파공학회), Vol.23, No.4, pp.1-18   과학기술학회마을   PUBMED
5 권상기, 조원진, 최종원, 2007, THM 복합거동 해석을 위한 DECOVALEX 국제공동연구 현황, 방사성폐기물학회지, Vol.5, No.4, pp.323-338
6 이창수, 전석원, 권상기, 조원진, 서용호, 박현익, 박연 준, 2006, 한국원자력연구소 내 지하처분연구시설에 서의 암반손상대 평가, 암반공학회 창립 25주년 기념 특별심포지엄, pp.15-24
7 Tsang, C.F., Bernier, F., and Davies, C., 2005, Geohydromechnical Processes in the Excavation Damaged Zone in Crystalline Rock, Rock Salt, and Indurated and Plastic Clays-in the Context of Radioactive Waste Disposal, Int. J. Rock Mech. Min. Sci. & Geomech. Abstr., Vol.42, pp.109-125   DOI   ScienceOn
8 이연규, 2006, Mohr-Coulomb 암반에 굴착된 원형 터 널의 변형률연화 거동해석, 터널과 지하공간, Vol.16, No.6, pp.495-505   과학기술학회마을
9 권상기, 조원진, 2007, 발파에 의한 터널주변 암반 손 상대 발생 평가, 화약･발파(대한화약발파공학회), Vol.25, No.1, pp.15-29   과학기술학회마을   PUBMED
10 박종성, 류동우, 류창하, 이정인, 2007, 수리적 굴착손 상영역에서의 지하수유동 특성에 관한 연구, 터널과 지하공간, Vol.17, No.2, pp.109-118   과학기술학회마을
11 천대성, 박찬, 박철환, 전석원, 2007, 응력조건에 따른 원형터널 주변의 취성파괴범위와 파괴심도, 터널과 지하공간, Vol.17, No.4, pp.311-321   과학기술학회마을
12 김형목, 류동우, 신중호, 2008, 굴착영향영역(EDZ) 투수특성의 실험적 평가기술, 터널과 지하공간, Vol. 18, No.2, pp.91-97   과학기술학회마을
13 정주환, 양형식, 최병희, 류창하, 2006, 발파손상영역 에 관한 문헌 고찰, 대한화약발파공학회 추계학술발 표회 논문집, 한국지질자원연구원, pp.67-73
14 정용훈, 2006, 발파에 의한 굴착손상영역의 수치해석 적 산정, 서울대학교 박사학위논문