Geophysics and Geophysical Exploration (지구물리와물리탐사)
- Volume 6 Issue 2
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- Pages.57-63
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- 2003
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- 1229-1064(pISSN)
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- 2384-051X(eISSN)
A Study on the Detection of Small Cavity Located in the Hard Rock by Crosswell Seismic Survey
경암 내 소규모 공동 탐지를 위한 시추공간 탄성파탐사 기법의 적용성 연구
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Ko, Kwang-Beom
(Imaging Technology Research Laboratory) ;
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Lee, Doo-Sung
(Dept. of Information System Engineering)
- Published : 2003.05.01
Abstract
For the dectection of small cavity in the hard rock, we investigated the feasibility of crosswell travel-time tomography and Kirchhoff migration technique. In travel-time tomography, first arrival anomaly caused by small cavity was investigated by numerical modeling based on the knowledge of actual field information. First arrival delay was very small (<0.125 msec) and detectable receiver offset range was limited to 4m with respect to
경암 내에 존재하는 소규모 공동 탐지를 목적으로 시추공 간 탄성파자료에 대한 주시 토모그래피 및 Kirchhoff 구조보정 기법의 적용 가능성을 고찰하였다. 주시 토모그래피의 경우 수치모델링을 통한 검토 결과, 소규모 공동(
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