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Volume 32 Issue 2
Apr.  2021
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Hujun JIA, Lijuan WANG, Dongli FAN. 2021: The application of UAV LiDAR and tilt photography in the early identification of geo-hazards. The Chinese Journal of Geological Hazard and Control, 32(2): 60-65. doi: 10.16031/j.cnki.issn.1003-8035.2021.02.08
Citation: Hujun JIA, Lijuan WANG, Dongli FAN. 2021: The application of UAV LiDAR and tilt photography in the early identification of geo-hazards. The Chinese Journal of Geological Hazard and Control, 32(2): 60-65. doi: 10.16031/j.cnki.issn.1003-8035.2021.02.08

The application of UAV LiDAR and tilt photography in the early identification of geo-hazards

doi: 10.16031/j.cnki.issn.1003-8035.2021.02.08
  • Received Date: 2020-06-27
  • Rev Recd Date: 2020-09-25
  • Publish Date: 2021-04-27
  • In recent years, serious geological disasters occur frequently in China.These geological disasters are with obvious concealment, high emergency, great destructive power and long disaster chain. The key task of our work in the field of geological disaster prevention and control is the identification and judgement of the hidden dangers in early stage. If these serious geological hazards could be identified early, the prevent and control of them may be initiative. Now the key problem we faced is how to realize the accurate exploration of the hidden dangers in areas where manpower could not reach.The UAV platform has the advantages of strong mobility, good convenience and more load modules.The UAV can carry a variety of sensors which can give full play to various technical advantages and obtain survey data of serious geo-hazards.These data are more accurate.The UAV can carry lidar equipment to penetrate surface vegetation. Accurate three-dimensional laser-point cloud data and real surface data elevation model (DEM) could be obtained. DEM can derive many characteristic parameters of micro-geomorphic factors such as mountain shadow, slope, contour, roughness and curvature etc..The UAV can also be equipped with tilting camera modules which can acquire both real 3D model and digital orthophoto map(DOM).This series of data can complement each other and be applied in combination.We can accurately extract the information of dangerous geological body and rock mass structure surface in different geomorphic environments. Based on these data, we can carry out qualitative and quantitative analysis.Therefore, we can further realize the serious geological hazards.
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