地理空间信息2024，Vol.22Issue(8)：107-110,4.DOI:10.3969/j.issn.1672-4623.2024.08.024
基于PS-InSAR技术的昆明地铁4号线沿线地面沉降监测研究
Land Subsidence Monitoring Along the Kunming Metro Line 4 Based on PS-InSAR Technology
摘要
Abstract
With the acceleration of urbanization,the problem of land surface deformation is becoming more and more serious,which gradually threatens the safe and healthy development of urban infrastructure.Time-series InSAR technology has unique advantages in monitoring urban in-frastructure surface deformation.Aiming at the land subsidence caused by subway construction,based on 30 Sentinel-1A satellite image data,we used PS-InSAR technology to monitor the land surface deformation of Kunming metro line 4,and interpolated the settlement results by geograph-ical weighted regression to obtain a continuous subsidence rate.The results show that after the opening of subway line 4,the lift rate in the study area increases from 53 mm/a to 85 mm/a.The subsidence rate increases from 74 mm/a to 137 mm/a.The annual cumulative subsidence value af-ter the opening of subway line 4 is about twice that before the opening,the maximum cumulative subsidence value is as high as 171 mm,and the maximum cumulative lift value is 106 mm.It is found that the surface deformation in the monitoring area is related to the geological conditions and engineering construction of the deformation area.关键词
PS-InSAR/昆明地铁4号线/地面沉降/地理加权回归Key words
PS-InSAR/Kunming metro line 4/land subsidence/geographical weighted regression分类
测绘与仪器引用本文复制引用
杨馨,李益敏,冯玥雯,段明坤,杨羽彤,计培琨..基于PS-InSAR技术的昆明地铁4号线沿线地面沉降监测研究[J].地理空间信息,2024,22(8):107-110,4.基金项目
教育部产学合作育人项目(202102245027) （202102245027）
云南大学面向多地学学科交叉融合的遥感课程群教学团队资助项目 （）
云南省科技厅—云南大学联合基金重点项目(2019FY003017) （2019FY003017）
中国地质调查局资助项目(DD20221824). （DD20221824）
