基于高精准三维模型的土石坝整体变形监测研究

Study on integral deformation monitoring of earth-rockfill dam based on high precision 3-D model

本文通过基于球面投影大坝三维表面构建算法构建土石坝表面模型,重建土石坝精确三维表面模型,将第一期数据作为参考数据,利用不同时期采集的点云数据与参考模型进行对比分析来获取大坝变形信息。通过试验验证了本文方法的可行性和实用性。

Through constructing the surface model of earth-rockfill dam with the 3-D dam surface construction algorithm based on spherical projection,an accurate 3-D surface model of earth-rockfill dam is reconstructed herein,and then by taking the first phase data of it as the reference,the point cloud data collected from various periods are applied to make a comparative analysis with those from the reference model for obtaining the dam deformation information. On the basis of the relevant experiment,it is demonstrated that this method is feasible and practicable.