机载雷达测绘技术下大坝沉降量的精准估计  

Accurate estimation of dam settlement under airborne radar surveying and mapping technology

作　　者：赵辉煌 黄志标 谢斌 ZHAO Huihuang;HUANG Zhibiao;XIE Bin(Zhejiang Provincial Land Survey and Planning Company Limited,Hangzhou,Zhejiang 310000,China;Zhejiang Academy of Surveying and Mapping Science and Technology,Hangzhou,Zhejiang 310000,China)

机构地区：[1]浙江省国土勘测规划有限公司,浙江杭州310000 [2]浙江省测绘科学技术研究院,浙江杭州310000

出　　处：《北京测绘》2025年第2期183-188,共6页Beijing Surveying and Mapping

基　　金：浙江省自然资源厅2022科研项目(2022-58)。

摘　　要：大坝是重要的水利工程和能源设施,但其在长期运营过程中可能会发生沉降。为了有效监测并及时处理大坝潜在的沉降问题,研究基于机载雷达测绘技术的大坝沉降量精准估计方法,依据机载雷达测绘技术原理获取待沉降量测量大坝点云数据,配准不同角度获得的大坝点云图像,使用三角形网格参数化策略将配准后的图像映射至三维网格模型,经调和映射算法求解后获得大坝点云数据模型。利用达索系统(CATIA)软件获取大坝激光点云数据模型与CATIA三维模型点位之间的差值,完成沉降量精准估计。实验结果表明,该方法的大坝沉降量估计值与实际值差值最大为3mm,精准度极高,具有重要的理论和实际价值,推动了相关领域的发展和应用。Dams are important hydraulic engineering and energy facilities,and they may experience settlement during longterm operation.In order to effectively monitor and promptly address potential settlement issues of dams,a precise estimation method for dam settlement based on airborne radar surveying and mapping technology was studied.Based on the principle of airborne radar surveying and mapping technology,the point cloud data of the dam to be measured for settlement was obtained.The point cloud images of the dam obtained from different angles were registered,and a triangular mesh parameterization strategy was used to map the registered images to a three-dimensional(3D)mesh model.After being solved by a harmonic mapping algorithm,the point cloud data model of the dam was obtained.A computer aided three-dimensional interactive application(CATIA)software was used to obtain the difference between the laser point cloud data model of the dam and the CATIA model points,and an accurate estimation of settlement was completed.The experimental results show that the maximum difference between the estimated values by using this method and the actual values of dam settlement is 3 mm,with extremely high accuracy.It has important theoretical and practical value and promotes the development and application in related fields.

关 键 词：大坝 沉降量估计 机载雷达 测绘技术 点云数据 三维模型 达索系统(CATIA) 

分 类 号：P258[天文地球—测绘科学与技术]