地面沉降时空形变场的构建方法研究  

Research on construction method of temporal and spatial deformation field of land subsidence

作　　者：许文洁 霍亮 沈涛[1] 陈壮 赵博林 XU Wenjie;HUO Liang;SHEN Tao;CHEN Zhuang;ZHAO Bolin(School of Geomatics and Urban Spatial Information,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Beijing Advanced Innovation Center for Future Urban Design,Beijing University of Civil Engineering and Architecture,Beijing 102616,China)

机构地区：[1]北京建筑大学测绘与城市空间信息学院,北京100044 [2]北京建筑大学北京未来城市设计高精尖创新中心,北京102616

出　　处：《测绘科学》2022年第1期204-211,共8页Science of Surveying and Mapping

基　　金：国家重点研发计划项目(2020YFD1100204);中国铁道科学研究院集团有限公司科研项目(2020YJ226)。

摘　　要：由于离散分布的精密水准测量数据只能对点状沉降信息进行监测分析,描述特定时间点的静态空间趋势,无法表达区域性地面沉降整体时空变化。该文提出一种地面沉降时空形变场的构建方法,在多项式拟合法构建形变场的基础上考虑时间项,通过探索地面沉降量与坐标、时间的关系,对区域地面形变的整体效果进行拟合,构建地面沉降时空形变场。该方法顾及了整个区域的时空特点,较好的解决了单个测点的时序沉降分析在整体性上的不足,实现了对区域性地面沉降时空形变的拟合。实验结果表明:该文所提方法具有良好的拟合效果,能够较好地反映区域性沉降的整体时空变化趋势,对地面沉降预防及城市规划建设具有一定的参考意义。Because the discrete distribution of precision level measurement data can only monitor and analyze the point settlement information,describing the static spatial trends at a specific point in time,it is not possible to express the overall Spatio-temporal change of regional ground subsidence.Therefore,this paper proposes a method for constructing the spatial and temporal deformation field of ground settlement.Based on the polynomial fitting method to build the deformation field,the temporal term is considered.The overall effect of regional ground deformation is fitted by exploring the relationship between the ground settlement amount and coordinates and time to construct the ground settlement Spatio-temporal deformation field.The method considers the spatial and temporal characteristics of the whole region,solves the shortcomings of the temporal subsidence analysis of individual measurement points in terms of totality,and achieves the fitting of the regional ground subsidence spatial and temporal deformation.The experimental results show that the proposed method has a good fitting effect and can better reflect the overall spatial and temporal trends of regional subsidence,which is of certain reference significance for ground settlement prevention and urban planning and construction.

关 键 词：地面沉降 时空形变场 多项式拟合 时空变化趋势 沉降防治 

分 类 号：P237[天文地球—摄影测量与遥感]