디지털 3차원 점군데이터 기반 암반 불연속면 거칠기 이방성 평가
Evaluation of Rock Discontinuity Roughness Anisotropy based on Digital 3D Point Cloud Data
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
불연속면 거칠기는 암반의 기계적 특성에 큰 영향을 주며 열·수리 역학적 거동에도 많은 영향을 미치는요소이다. 본 연구에서는 입체사진측량기법을 이용하여 불연속면에 대한 3차원 점군 데이터를 생성시키고 이를 이용하여 불연속면의 거칠기 특성화를 수행하였다. 3차원 점군 데이터로 재생성된 불연속면프로파일과 프로파일 게이지를 이용하여 수동으로 측정한 프로파일을 비교하여 취득한 점군 데이터가암반면의 실제 형상을 정확하게 재현하였는지 평가하였다. 또한, 측정 프로파일수가 거칠기 평가에 미치는 영향에 대해 분석하였고, 거칠기의 이방성 평가방법을 제안하고 실제 암반 불연속면에 대한 거칠기이방성 평가를 수행하였다.
Abstract
The roughness of discontinuity significantly influences the mechanical characteristics of rock masses and extensively affects thermal and hydraulic behaviors. In this study, we utilized photogrammetry to generate 3D point cloud data for discontinuity and applied this data to characterize the roughness of discontinuity. The discontinuity profiles, reconstructed from the 3D point cloud data, were compared with those manually measured using a profile gauge. This comparison served to validate the accuracy and reliability of the acquired point cloud data in replicating the actual configurations of rock surfaces. Subsequent to this validation, influence of the number of profiles for representative JRC assessment was further investigated followed by suggestion of roughness anisotropy evaluation method with application of it to actual rock discontinuity surfaces.
참고문헌 (23)
- Abolfazli, M., "An investigation on the correlation between the joint roughness coefficient(JRC)and joint roughness parameters", Construction and Building Materials, 259, pp.120415~ (2020)
- Aubertin, J. D., "Scale-dependent rock surface characterization using LiDAR surveys", Engineering Geology, 301, pp.106614~ (2022)
- Ban, L., "New roughness parameters for 3D roughness of rock joints", Bulletin of Engineering Geology and the Environment, 78, pp.4505~4517 (2019)
- Bandis, S. C., "Fundamentals of rock joint deformation", International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 20(6), pp.249~268 (1983)
- Bao, H., "Geometrical heterogeneity of the joint roughness coefficient revealed by 3D laser scanning", Engineering Geology, 265, pp.105415~ (2020)
- Barton, N., "The shear strength of rock joints in theory and practice", Rock mechanics, 10, pp.1~54 (1977)
- Besl, P. J., "Method for registration of 3-D shapes", Sensor fusion IV: control paradigms and data structures, 1611, pp.586~606 (1992)
- Diaz, M., "Surface roughness characterization of open and closed rock joints in deep cores using X-ray computed tomography", International Journal of Rock Mechanics and Mining Sciences, 98, pp.10~19 (2017)
- García-Luna, R., "Characterization of joint roughness using long-range terrestrial photogrammetry", ISRM EUROCK (2020), ISRM
- Grasselli, G., "Constitutive law for the shear strength of rock joints based on three-dimensional surface parameters", International Journal of Rock Mechanics and Mining Sciences, 40(1), pp.25~40 (2003)
- Huan, J., "Research of macro and micro mechanism of shear strength and quantitative description of 3D roughness for rock joints", pp.2021
- Liu, X. G., "Estimation of the joint roughness coefficient of rock joints by consideration of two-order asperity and its application in double-joint shear tests", Engineering Geology, 220, pp.243~255 (2017)
- Mallat, S., "A wavelet tour of signal processing" (1999), Elsevier
- Mandelbrot, B. B., "On the quadratic mapping z→ z2-μ for complex μ and z: the fractal structure of its M set, and scaling", Physica D: Nonlinear Phenomena, 7(1-3), pp.224~239 (1983)
- Mo, P., "Estimating the three-dimensional joint roughness coefficient value of rock fractures", Bulletin of Engineering Geology and the Environment, 78, pp.857~866 (2019)
- Momeni, A., "Evaluation of surface roughness of rock-like joints using close range photogrammetry method", IOP Conference Series: Earth and Environmental Science, 1124(1), pp.012062~ (2023)
- Myers, N. O., "Characterization of surface roughness", Wear, 5(3), pp.182~189 (1962)
- Tatone, B. S., "A new 2D discontinuity roughness parameter and its correlation with JRC", International Journal of Rock Mechanics and Mining Sciences, 47(8), pp.1391~1400 (2010)
- Tse, R., "Estimating joint roughness coefficients", International Journal of Rock Mechanics and Mining Sciences & Geomechanics, 16(5), pp.303~307 (1979)
- Wang, C., "A novel method for determining the three-dimensional roughness of rock joints based on profile slices", Rock Mechanics and Rock Engineering, pp.1~25 (2023)
- Yang, Z. Y., "Reassessing the joint roughness coefficient(JRC)estimation using Z2", Rock Mechanics and Rock Engineering, 34, pp.243~251 (2001)
- Yu, X., "Joint profiles and their roughness parameters", International Journal of Rock Mechanics and Mining Sciences & Geomechanics, 28(4), pp.333~336 (1991)
- Zhang, G., "Estimation of joint roughness coefficient from three-dimensional discontinuity surface", Rock Mechanics and Rock Engineering, 50, pp.2535~2546 (2017)