The engineering geological survey of slope rock mass by traditional technical means has the characteristics of tedious process,workload and difficulty.In order to efficiently measure and identify high steep slope rock mass in com-plex geological environment,by fully combining and applying the advantages of UAV oblique photography and 3D point cloud technology,this work selects the fractured loose rock slopes at a concrete mixing station of the Lancang River hy-dropower station as the research object.UAV oblique photography is employed to conduct aerial surveys of the frac-tured loose rock masses in the study area.A three-dimensional realistic model of the fractured loose rock slopes is con-structed,and 3D point cloud data is extracted to identify and analyze the dominant structural surfaces of the fractured loose rock masses.This approach reconstructs the real terrain and morphological features of the study area,obtaining high-precision three-dimensional spatial data for steep slopes with fractured loose rock masses.The distribution charac-teristics of dominant structural surfaces are determined,which can provide reliable reference for setting up Discrete Fracture Network (DFN) in numerical simulation analysis.This research lays a geological foundation for the construc-tion and long-term safe operation of the hydropower station,and provides a scientific basis for the investigation and pre-vention of fractured loose rock masses.This research can be used for reference in geological survey of high and steep slope which is difficult to realize by traditional means.
关键词
碎裂松动岩体/三维点云/无人机倾斜摄影/结构面识别
Key words
fractured loose rock mass/3D point cloud/unmanned aerial vehicle oblique photography/structural surface identification
维普
万方数据