Research on the application of airborne 3D laser scanning technology in surface rock movement monitoring in mining areas

Aiming at the problems of traditional spirit leveling in ground subsidence monitoring, such as long monitoring cycle, timeconsuming, laborious, and low timeliness, this paper adopts the airborne 3D laser scanning method to acquire the surface subsidence information of the mining area's working face. By comparing it with the contemporaneous leveling measurement data, the subsidence monitoring accuracy of airborne LiDAR and its advantages in the surface subsidence analysis of the mining area's working face are analyzed and verified. The results show that the airborne 3D laser scanning monitoring data and leveling measurement data have good consistency in subsidence trends. It can capture the subtle changes in the subsidence area in real time. The rapid response capability and high-frequency monitoring characteristics of unmanned aerial vehicle (UAV) measurement significantly improve the timeliness of monitoring and the accuracy of early warning. Compared with traditional measurement methods, it has good application prospects.