国家重点沉降区域多监测手段综合分析  

Comprehensive analysis of multiple monitoring methods in main subsidence areas

作　　者：杜钊锋 李国鹏 刘站科 尚夏明 康胜军 王晓强 DU Zhaofeng;LI Guopeng;LIU Zhanke;SHANG Xiaming;KANG Shengjun;WANG Xiaoqiang(The First Geodetic Surveying Brigade of MNR,Xi an 710054,China)

机构地区：[1]自然资源部第一大地测量队,陕西西安710054

出　　处：《测绘学报》2025年第3期481-492,共12页Acta Geodaetica et Cartographica Sinica

基　　金：陕西测绘地理信息局科技创新项目(SCK2022,SCK2025);国家重点研发计划(2016YFC0803109)。

摘　　要：华北平原多年累积的地面沉降已成为日益严重的地质环境问题。本文基于华北平原InSAR垂直形变场监测成果,结合研究区内CORS站、大地控制点等地表垂向变化信息提取成果,融合多源数据构建华北平原统一基准的垂直形变场,并采用水准点高程变化数据进行对比验证。针对地面沉降引起的国家高程基准现势性差和准确度不高的问题,本文对重点沉降区国家高程基准点的变化特征和影响程度进行了分析,通过确定高程基准点区域性复测的方法,提出国家高程基准点区域性复测的建设方案,以实现国家高程基准的更新与维持。国家高程基准点区域性复测,既可以节省国家高程基准控制网整网复测的资金投入,避免重复性建设的成本,又可以满足国家重大战略工程的建设需求。The land subsidence accumulated over years in the North China Plain has become an increasingly serious geological environment problem.Based on the monitoring results of InSAR vertical deformation field,multi-source data was fused to build a unified datum vertical deformation field from the information extraction results of surface vertical changes of continuously operation reference stations(CORS)and geodetic control points in the North China Plain,and the elevation change data of leveling points were used for comparative verification.In response to the issues of poor current status and low accuracy of national elevation datum caused by land subsidence,the characteristics and impact of changes in national elevation datum point was analyzed in main subsidence areas.Furthermore,a regional remeasurement scheme was developed to achieve dynamic updates and maintenance of the national elevation datum in a regional way.The regional remeasurement of the national elevation datum point can not only save the investment in remeasurement the entire control network of the national elevation datum,avoid the cost of repetitive construction,but also meet the construction needs of major national strategic projects.

关 键 词：国家高程基准点 区域性复测 InSAR监测 垂直形变场 多源数据融合 

分 类 号：P224[天文地球—大地测量学与测量工程]