无人机倾斜摄影测量技术在露天矿山三维建模的精度分析与应用研究OA

To address the problems of low efficiency and unreliable accuracy in traditional surveying and mapping methods for open-pit mines,this paper studies the accuracy control methods of UAV oblique photogrammetry in 3D modeling of open-pit mines,and applies the method in a complex mining area with a height difference of 410 m.The results show that the point positioning accuracy of all image control points meets the accuracy standard of 0.01 m for horizontal dirction and 0.01 m for eleuation.The check points meet the accuracy requirements for 1∶500 topographic maps;Mining time is shortened by 20％,transportation cost is reduced by 15％,and equipment utilization rate is increased by 30％.Ten potential hazards of slope instability have been successfully warned;The method can meet the demand for high-precision 3D modeling of open-pit mines and has application value in mining planning,production management,safety supervision,reserve calculation and digital mine construction.