3D laser scanning technology can obtain spatial data quickly and accurately by incorporating light,electricity and computer technology. Some concrete damages in several sections were discovered during the detection of diversion tunnels of Jinping Ⅱ Hydropower Station. However,it is difficult to use the traditional methods to detect the concrete surface defects and deformation due to time and cost limitations. By scanning full sections of the tunnels through 3D laser scanning technology,the concrete surface defects were timely detected and treated,so the safe operation of the project was ensured. Meanwhile,we obtained the 3D coordinate information of concrete surface and established a basic database for the concrete surface defects,which could provide reference for the analysis of concrete surface defect variation and deformation.
3D laser scanning
Jinping Ⅱ Hydro power Station