Application and Research of the Fusion of Airborne LiDAR and Photogrammetry Technology in Mined-land Restoration
With the vigorous development and utilization of mineral resources,there are a series of problems such as resource depletion,environmental pollution and ecological destruction,which made the rapid and effective restoration and treatment of mine ecological environment become the focus of attention in the construction of ecological civilization in China.However,the traditional operation method has many problems,such as many blind areas,great difficulty,high cost and great potential safety hazard in the surveying and mapping of mountainous terrain in harsh environment.Therefore,this paper combined airborne lidar and photogrammetry technology to obtain complete and high-precision 3D laser point cloud data and high-resolution image data from the air to the mined-land.Then,through data fusion and post-processing,high-precision digital elevation model and various thematic map results are generated,which provide strong technical and data support for forest resource investigation,filling and excavation volume calculation,topography change analysis and safety risk assessment in mined-land restoration planning.