The Research And Application Of3D Laser Scanning Techniques In Landslide Monitoring

Three-dimensional laser scanning technology is a new laser measurement technology ofdeveloping rapidly in recent decades. Because of the ground3D laser scanning technologycan acquisition of3-D spatial coordinates in high speed、high precision、high density of objectsurface, And Without contact with the object to be measured. The technique has been appliedto landslide deformation monitoring. This paper introduces the technology of3D laserscanning, combined with the processing on specific landslide monitoring data and the analysison monitoring results analysis. Explore the theory and methods on3D scanning technology inthe field of landslide deformation monitoring.This article introduces the principle and method of three-dimensional laser scanningfirstly. And then introduces the composition of hardware and the fields of Application on Leica Scanstation23D laser scanner. Finally obtain the surface topography’s point cloud dataof the qingliang Temple Landslide in the application of3D laser scanning technology.Establish the high precision digital elevation model of landslide area after stitching、denoisingand filtrating to the point cloud data. And then calculate the volume of earthwork based onspecific reference plane in scanning area. Use multiple DEM model in different scan period tocalculate the change size of volume of earthwork in region. Joint the deformation informationof monitor points make effective monitoring and prediction to the trend of landslide body. Inorder to process the data time and fast. Corresponded the procedures for processing datacombined with the VB language.the program can get surface map, contour map, surfaceDEM and the volume size of earthwork timely and fast in specific regions of the landslidemonitoring area. The landslide real-time monitoring in the application of3D laser scanningtechnology is a new research content in the deformation monitoring of landslide. Combinewith the landslide of qingliang temp. Do the experiment to the point cloud data by fieldscanning. Discuss the feasible of the theory and method. Get the expected effect.