基于三维激光扫描的大坝面板测量精度分析  

On the Measurement Accuracy of Dam Face Slab based on Three-dimensional Laser Scanning

作　　者：李涵曼 李丽丽 闫二磊 LI Hanman;LI Lili;YAN Erlei(State Key Laboratory of Hydrology Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029,China;Dam Safety Management Center of the Ministry of Water Resources,Nanjing 210029,China;Jinlong Water Conservancy(Henan)Co.,Ltd.,Zhengzhou 450046,China;Henan Hekou Village Reservoir Operation Center,Zhengzhou 450003,China)

机构地区：[1]南京水利科学研究院水文水资源与水利工程科学国家重点实验室,江苏南京210029 [2]水利部大坝安全管理中心,江苏南京210029 [3]金龙水利工程(河南)有限公司,河南郑州450046 [4]河南省河口村水库运行中心,河南郑州450003

出　　处：《水电与新能源》2025年第3期19-22,27,共5页Hydropower and New Energy

基　　金：国家重点研发计划项目(2021YFB3900603);中央级公益性科研院所基本科研业务费专项资金项目(Y723005)。

摘　　要：借助三维激光扫描技术获取大坝坝体的点云信息,提取生成坝面几何图像信息,可快速获取大坝坝体形变特征。通过现场检测实验,研究了测距、测角等典型环境变量对激光扫描测量精度的影响。结果表明:三维点云数据监测结果的准确性受与被测量体的夹角影响较大,夹角越小监测结果越准确,且测角比测距对测量结果的准确性影响更大。By using the three-dimensional laser scanning technique,the point cloud information of a dam body can be obtained.Then,by extracting and generating the geometric image information of the dam surface,the deformation characteristics of the dam body can be quickly obtained.Through on-site experiments,the influences of typical environmental factors such as measurement distance and angle on the measurement accuracy of the laser scanning are investigated.The results show that the accuracy of the three-dimensional point cloud monitoring data is greatly affected by the angle with the measured objects.The smaller the angle,the more accurate of the monitoring results.The angle has a greater influence on the measurement accuracy than the measurement distance.

关 键 词：三维激光扫描 大坝 精度 测距 夹角 

分 类 号：TV698[水利工程—水利水电工程]