无人机摄影测量在尾矿坝变形监测分析中的应用

由于尾矿坝安全管理范围大,山地环境特殊,传统测绘手段难以开展,尾矿坝变形位移数据仅通过单点或多点的监测方式获得,因此本文提出一种基于UAV摄影测量的尾矿坝变形监测分析方法,该方法通过无人机对尾矿坝两期空间三维地理信息数据的采集,将采集到的两期数据分别进行三维重建并生成点云模型,再利用地理信息三维时空对比分析技术对两期点云模型进行对比分析。结果表明：该方法实现了对尾矿坝由点到面的全方位监测,监测精度可达厘米级,为尾矿坝宏观变形监测及异常变形区域的快速核查及安全巡检等提供了依据。

Application of UAV photogrammetry in monitoring and analysis of tailings dam deformation

Due to the large scope of safety management of tailings dam and the special mountainous environment, traditional surveying and mapping means are difficult to carry out, and the deformation and displacement data of tailings dam can only be obtained through single or multi-point monitoring. Therefore, this paper proposes a tailings dam deformation monitoring and analysis method based on UAV photogrammetry, which collects the three-dimensional geographic information data of two phases of tailings dam by UAV. The collected data of the two periods were reconstructed in three dimensions and the point cloud model was generated. The point cloud model of the two periods was compared and analyzed by using the three dimensional spatio-temporal comparative analysis technology of geographic information. The results show that the method can realize the comprehensive monitoring of tailings dam from point to surface, and the monitoring accuracy can reach cm level, which provides a basis for the macro deformation monitoring of tailings dam and the rapid verification and safety inspection of abnormal deformation area.