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Study on Applicability of Stereophotogrammetry to Rock Joint Survey  

Han, Jeong-Hun (서울대학교 지구환경시스템공학부)
Song, Jae-Joon (서울대학교 에너지시스템공학부)
Publication Information
Tunnel and Underground Space / v.17, no.2, 2007 , pp. 139-151 More about this Journal
Abstract
Stereophotogrammetry is a method to extract information of an interested area by constructing a stereo-image from two or more photos. In this study, the stereophotogrammetry was adopted to obtain the joint orientation and trace length from a sampling window and its measurements were compared with the result by a clinocompass and measuring tape to evaluate the applicability of the stereophotogrammetry to rock joint survey. A commercial stereophotogrammetry program, ShapeMetriX 3D, was used for this purpose. Firstly, the accuracy of the measuring method using ShpaeMetrix 3D was evaluated by a model test. Secondly, joint orientations on a rock slope and tunnel were obtained by using ShapeMetriX 3D and compared with the measurement by a clinocompass. Finally. the effect of base-depth ratio in photographing was evaluated by comparing images with various base-depth ratios, and the usefulness of closed-up photographing on a rock exposure to increase the measurement accuracy was tested. The dip and dip direction of each model plane obtained by ShapeMetriX 3D showed an error ranged between $-5^{\circ}\;and\; 5^{\circ}$ on the basis of the results by the measuring tape. Base-depth ratio proved not to influence the analysis result by ShapeMetriX 3D if all the images were taken without any hidden area. The close-up photographing turned out useful to obtain the detailed images and therefore precise result when ShapeMetriX 3D was adopted.
Keywords
Stereophotogrammetry; Rock joint survey; Base-depth ratio; Close-up photographing;
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1 류동우, 이유리, 장윤섭, 이희근, 박형동, 2000, 화상처리 및 입체사진측량학을 이용한 암반 절리 조사 시스템, 터널과 지하공간, 한국암반공학회지, 제 10권 3호, pp. 329-343
2 Ewan, V J, West, G, 1981, Reproducibility of joint orientation measurements in rock, Transport and Road Research Laboratory supplementary report 702, 18P
3 Tsoutrelis, C.E, Exadactylos, G.E., Kapenis, A.P., 1990, Study of the rock mass discontinuity system using photoanalysis, Mechanics of Jointed and Faulted Rock, pp. 103-112
4 Franklin, J.A., Maertz, N.H., Bennett, C.P., 1988, Rock mass characterization using photoanalysis, International Journal of Rock Mechanics and Mining Science & Geomechanics, Vol. 6, No.2, pp. 97-112
5 김종훈, 2002, 암반 절리의 기하학적 특성 분석을 위한 디지털 사진측량기법의 개발, 강원대학교 대학원 공학박사 학위논문
6 Reid, T.R., Harrison, J.P., 2000, A semi-automated methodology for discontinuity trace detection in digital images of rock mass exposures, International Journal of Rock Mechanics & Mining Sciences, Vol. 37, No.7, pp. 1073-1089   DOI   ScienceOn
7 유복모, 박운용, 양인태, 1983, 사진측정기법을 이용한 사면의 경사와 주향결정에 관한 이론적 고찰, 대한토목학회 논문집, 제 3권 3호, pp. 129-135
8 International Journal of Rock Mechanics and Mining Science & Geomechanics Abstracts, Vol. 19, Issue 4, August 1982, Page 94
9 Hagan, T.O., 1980, A case for terrestrial photogrammetry in deep-mine rock structure studies, International Journal of Rock Mechanics and Mining Science & Geomechanics, Vol. 17, pp. 191-198   DOI   ScienceOn