한국지구물리탐사학회:학술대회논문집
- 한국지구물리탐사학회 2006년도 공동학술대회 논문집
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- Pages.239-244
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- 2006
Feasibility test on EDZ detection by using borehole radar survey
- 조성준 (한국지질자원연구원 지반안전연구부) ;
- 김정호 (한국지질자원연구원 지반안전연구부) ;
- 손정술 (한국지질자원연구원 지반안전연구부) ;
- 김창렬 (한국지질자원연구원 지반안전연구부) ;
- 성낙훈 (한국지질자원연구원 지반안전연구부)
- Cho, Seong-Jun (Geotechnical engineering Div., KIGAM) ;
- Kim, Jung-Ho (Geotechnical engineering Div., KIGAM) ;
- Son, Jeong-Sul (Geotechnical engineering Div., KIGAM) ;
- Kim, Chang-Ryol (Geotechnical engineering Div., KIGAM) ;
- Sugn, Nak-Hun (Geotechnical engineering Div., KIGAM)
- 발행 : 2006.06.08
초록
현재 건설중인 한국원자력 연구소 내의 지하 처분 연구시설에서 발파에 의한 터널 굴착 중 발생하는 손상대를 모니터링 하기 위해 시추공 레이다 반사법 탐사를 수행하였다. 60m 길이의 진입 터널이 완성되고 끝단에 쉘터가 만들어진 뒤 쉘터로부터 길이 35 m의 수평 시추공을 뚫어 터널 굴착에 따른 손상대 모니터링을 위한 관측공으로 사용하였다. 시추공은 굴착터널로부터 5.5 m 떨어져 있으며,
Borehole radar reflection surveys were carried out in the horizontal borehole to detect EDZ while constructing the tunnel for the research facility of the nuclear waste disposal in Korea. The horizontal borehole has been bored at a length of 35 m from shelter to be parallel with the tunnel which would be planed. While the tunnel has been constructing with the explosive excavation, the borehole radar reflection surveys carried out 5 times with the interval of 2 or 4 days for monitoring EDZ. The most typical change of the reflection event resulted from the face of the wall of tunnel which had been produced newly by the excavation of the tunnel daily, EDZ has been detected with constructing images of difference between two measurement stages, and also the change of EDZ through the time has been done, which is due to the generation of crack and weakening of the rock strength of the face of the tunnel's wall near previous portion of the face of a blind end of tunnel according to explosive excavation.