首页|A method to interpret fracture aperture of rock slope using adaptive shape and unmanned aerial vehicle multi-angle nap-of-the-object photogrammetry

A method to interpret fracture aperture of rock slope using adaptive shape and unmanned aerial vehicle multi-angle nap-of-the-object photogrammetry

扫码查看
原文链接
  • 万方数据
  • 维普
The aperture of natural rock fractures significantly affects the deformation and strength properties of rock masses,as well as the hydrodynamic properties of fractured rock masses.The conventional mea-surement methods are inadequate for collecting data on high-steep rock slopes in complex mountainous regions.This study establishes a high-resolution three-dimensional model of a rock slope using un-manned aerial vehicle(UAV)multi-angle nap-of-the-object photogrammetry to obtain edge feature points of fractures.Fracture opening morphology is characterized using coordinate projection and transformation.Fracture central axis is determined using vertical measuring lines,allowing for the interpretation of aperture of adaptive fracture shape.The feasibility and reliability of the new method are verified at a construction site of a railway in southeast Tibet,China.The study shows that the fracture aperture has a significant interval effect and size effect.The optimal sampling length for fractures is approximately 0.5-1 m,and the optimal aperture interpretation results can be achieved when the measuring line spacing is 1％of the sampling length.Tensile fractures in the study area generally have larger apertures than shear fractures,and their tendency to increase with slope height is also greater than that of shear fractures.The aperture of tensile fractures is generally positively correlated with their trace length,while the correlation between the aperture of shear fractures and their trace length appears to be weak.Fractures of different orientations exhibit certain differences in their distribution of aperture,but generally follow the forms of normal,log-normal,and gamma distributions.This study provides essential data support for rock and slope stability evaluation,which is of significant practical importance.

Unmanned aerial vehicle(UAV)photogrammetryHigh-steep rock slopeFracture apertureInterval effectSize effectParameter interpretation

Mingyu Zhao、Shengyuan Song、Fengyan Wang、Chun Zhu、Dianze Liu、Sicong Wang

展开 >

College of Construction Engineering,Jilin University,Changchun,130026,China

College of Geo-Exploration Science and Technology,Jilin University,Changchun,130026,China

Institute of Engineering Geology and Geohazards,Hohai University,Nanjing,210098,China

National Nature Science Foundation of ChinaNational Nature Science Foundation of ChinaNatural Science Foundation Project of Jilin Province,China

421771394194101720230101088JC

2024

10.1016/j.jrmge.2023.07.010

岩石力学与岩土工程学报(英文版)
中国科学院武汉岩土力学所中国岩石力学与工程学会武汉大学

岩石力学与岩土工程学报(英文版)

CSTPCD
影响因子：0.404
ISSN：1674-7755
年,卷(期)：2024.16(3)
  • 55