时序InSAR青岛西海岸新区地铁沿线沉降监测分析

Monitoring and analysis of surface subsidence of Qingdao West Coast New Area subway using time-series InSAR

针对青岛西海岸新区地表沉降问题,该文运用时序InSAR技术获取2017年4月—2022年6月青岛西海岸新区沉降速率场与累计沉降量场,并选取特征区域及不同空间跨度的三条地铁线路进行具体沉降分析。实验结果表明:地铁沿线整体呈现稳定状态,港山路、嘉陵江西路站到香江路区间,以及星海滩站到灵山湾站区间有区域性的不均匀沉降问题,部分线路沉降速率较大。西海岸新区地铁沿线的时空演化成果图,能够较为真实地反映该区域地铁线路的沉降情况,这为西海岸新区地铁沉降监测以及地质灾害防治提供了可靠的分析基础和数据支撑。

This article applies time-series InSAR technology to obtain the settlement rate field and cumulative settlement amount field of Qingdao West Coast New Area from April 2017 to June 2022,and selects three subway lines with characteristic areas and different spatial spans for specific settlement analysis.The experimental results show that the subway line is in a stable state overall,with regional uneven settlement problems in the sections from Gangshan Road,Jialingjiangxi Road Station to Xiangjiang Road,and Xinghaitan Station to Lingshanwan Station.Some lines have a relatively high settlement rate.The spatiotemporal evolution map along the subway line in the West Coast New Area can accurately reflect the settlement situation of the subway line in the area,providing a reliable analytical basis and data support for subway settlement monitoring and geological disaster prevention in the West Coast New Area.