Application of D-InSAR technology in urban land subsidence measurement: A case study on Beihai city

2018 International Conference of Green Buildings and Environmental Management

土木建筑工程;生态环境科学

Wang, X.L.^1 ; You, J.K.^1 ; Hu, L.^1 ; Qiu, E.L.^2 ; Xiang, J.^3 ; Guan, K.^1 ; Xu, C.^1

School of Civil and Architecture Engineering, Nanchang Institute of Technology, 289 Tianxiang Road, Nanchang

330099, China^1

Remote Sensing Center of Guangxi, 34 Jianzheng Road, Nanning

530023, China^2

Boyuanzhongce Testing Detection Technology Co., Ltd, Optical Valley Pharmaceutical Industrial Park, Wuhan

430206, China^3

关键词: Annual average;    Differential radar interferometry;    Fast reaction;    Field investigation;    Ground deformations;    Ground subsidence monitoring;    Land subsidence;    Surface deformation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/186/3/012081/pdf
DOI  :  10.1088/1755-1315/186/3/012081

来源: IOP

【 摘 要 】

Land subsidence monitoring is of great significance for the city safety and development. D-InSAR technology is widely used in city ground subsidence monitoring as the development of synthetic aperture radar satellite applications, because of the surface deformation information in all-weather conditions with merits of large coverage, fast reaction and high accuracy. This paper studied and analyzed the land subsidence in Beihai by the track method of differential radar interferometry; the information of land subsidence was obtained. The distribution of land subsidence in Beihai city is widespread; the maximum land subsidence was 0.1567m in the studying area from 2001 to 2011, with the maximum annual average subsidence rate of 0.0157m/a, the most serious land subsidence point is located in E109°16′49.443″, N21°37′45.243″. Combined with the field investigation, ascertain the main influencing factors of land subsidence in Beihai city is the exploitation of groundwater resources. The result implies that the D-InSAR technology is remarkably effective on ground subsidence monitoring in Beihai, which can accurately extract the information of ground deformation area.