Mining Geological Disaster Survey Method Based on UAV Tilt Photography
The long-term uncontrolled and unplanned mining of mines has caused significant damage to the landform and topography,and is prone to induce various geological disasters.Due to the poor working conditions for entering the interior of the mine or underground tunnels for survey,there are difficulties in ventilation,lighting,communication,and other aspects.Moreover,the space is complex,the direction is not clear,and there are risk factors,making the survey operation difficult.Therefore,a method of mine geological hazard survey based on unmauned aerial vehicle(UAV)tilt photography is proposed.Select the mine survey area,design a UAV photogrammetric scheme,and aerial photography route.Design the UAV tilt photography process,and analyze the image coordinate information of the ob-tained orthophoto image.Based on the analysis results,the survey images are analyzed in the order of left and right mountains,slopes,and natural slopes to identify the types of geological hazards in the survey mine.The results show that the survey error using UAV tilt photography is less than 0.1 m.Using the proposed method,it can be detected that the mine has low vegetation coverage,exposed rock mass,and gravel on the surface,indicating that the aban-doned mine has geological disaster conditions that constitute landslides,debris flows,and collapses.
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