基于三维激光扫描技术的边坡表面变形监测

为克服传统边坡监测方法中监测点数少的弊端,基于三维激光扫描技术展开的张承高速某边坡表面位移监测,建立了点与面结合的监测系统;同时利用扫描点云生成的网格及等高线,可获取整个边坡的三维模型及位移云图,进而进行整体位移场的动态分析和特征点的重点监测。试验结果表明,三维激光扫描技术应用于大规模边坡位移长期、高精度监测,突破了传统方法中点对点监测的限制。相比于传统边坡监测方法,三维激光扫描技术具有大范围、高精度、高效率和高速等特点,可以获取三维空间内边坡的详细信息,尤其对区域性预警拥有独特的优势。

Surface deformation monitoring of side slope based on 3D laser scanning

The surface deformation monitoring base on 3D laser scanning technology of a side slope at Zhang-Cheng express way, build a new system which contact the points with the face. In order to monitor the feature points and analyze the displacement field dynamically, 3D laser scanning technology can provide the 3D model and the color nephogramof displacement by generating mesh model and extracting contour in the post-processing. The results fully elaborate the feasibility of 3D laser scanning technology used in the long-time and high precision monitoring. Compared to the traditional deformation monitoring methods of side slope, 3D laser scanning technology has a wider range, higher precision, higher efficiency, higher speed and other characteristics. It can obtain detailed information of the side slope on the 3D space. The new way breakthrough the limit of traditional method which can only monitor limit feature points and has a distinct advantage in the regional early warning.