基于地面三维激光扫描仪的滑坡整体变形监测方法

地面三维激光扫描仪能高精度、高密度、高速度、非接触的测量滑坡表面三维空间坐标，得到目标体表面点集合。应用点云数据差分比较、基于不规则三角网变形分析、基于规则矩形网格差分比较、等高线重合分析方法分析两个时间段获得的滑坡点云数据集的表面整体变形，依据选择最优法，几种分析方法选择的软件不同。结合本次试验可以得出Cloud Compare与Sufer8的整体变形值的绝对值相差不大，但是Cloud Compare精度高于Sufer8；Poly—works能以三角面为基础很好地分析滑坡表面整体变形。这为以后整体变形监测提供了可供选择的新依据。

Overall Deformation Monitoring for Landslide by Using Ground 3D Laser Scanner

3D laser scanning technology has been successfully applied to static surface measurement and getting the overall point. In the paper based on point cloud data differential comparator, triangulated irregular network, ectangular grid, contour overlap analysis the entire surface deformation of the landslide, choosing the best method, several analytical methods select different software. Combined this test, the absolute value＇ difference about overall detbrmation from CloudCompare and Sufer8 is less, but the accuracy of CloudCompare is higher than Surer8. Polyworks can analyze the landslide＇s overall deformation based on triangles.