基于PS-InSAR技术的地铁沉降监测研究

Research on Subway Settlement Monitoring Based on PS-InSAR Technology

以城市地铁网络作为监测对象,采集Sentinel-1影像,采用PS-InSAR技术获得地铁沿线两侧100 m范围之内的形变分布情况,再将检测结果同水准测量结果对比,得知PS-InSAR技术下的测量结果和水准测量结果一致性较好,监测期间地铁沿线年平均形变速率处于-41.84~10.61 mm/a范围内,监测范围内多数区域较为稳定。研究表明PS-InSAR技术对于地铁沿线沉降监测有着重要意义。

Taking the urban subway network as the monitoring object,collects Sentinel-1 images,uses PS-InSAR technology to obtain the deformation distribution within 100 m range on both sides of the subway line,and then compares the detection results with the level measurement results,and it is found that the measurement results under PS-InSAR technology have good consistency with the level measurement results,and the annual average deformation rate along the subway line is in the range of-41.84~10.61 mm/a during the monitoring period.Most of the areas monitored are relatively stable.Studies have shown that PS-InSAR technology is of great significance for settlement monitoring along subway lines.