基于PS-InSAR干涉测量技术的高铁工程沉降监测研究  

Research for subsidence monitoring in high-speed railway construction based on permanent scatterer synthetic aperture radar interferometry technology

作　　者：姚强强 YAO Qiangqiang(The First Survey and Design Institute Group Co.,Ltd.,of China Railway,Xi’an 710043,China;Gansu Railway Comprehensive Engineering Survey Institute Co.,Ltd.,Lanzhou 730000,China)

机构地区：[1]中铁第一勘察设计院集团有限公司,陕西西安710043 [2]甘肃铁道综合工程勘察院有限公司,甘肃兰州730000

出　　处：《经纬天地》2024年第2期42-47,共6页Survey World

摘　　要：以永久散射体合成孔径雷达干涉测量技术为基础,探讨高铁工程沉降监测的新方法。通过对合成孔径雷达卫星数据进行干涉处理,实现对高铁地表沉降的监测。先探测高铁工程沉降路段PS点,再进行模型构建。结果显示,实验选取的高铁运行路段中,靠近桥梁部分沉降最为严重,达到-23 mm/a,并且L1高铁路段靠近铁路部分沉降率高,最高达-16 mm/a,L2靠近桥梁的部分,沉降速率最高达-24 mm/a。研究结论显示,PS-InSAR技术能够精确地识别和评估高铁工程中的沉降风险,为确保高铁网络的安全运行提供了重要的技术支持。此项研究能为我国高铁网络的安全性和可靠性作出贡献。Based on the permanent scatterer synthetic aperture radar interferometry measurement technology,a new method for monitoring settlement in high-speed rail engineering is explored in this paper.By performing interferometric processing on synthetic aperture radar satellite data,monitoring of surface subsidence on high-speed rail can be achieved.First,detect the PS point on the settlement section of the high-speed rail project,and then construct the model.The results showed that in the selected high-speed railway operation sections,the settlement near the bridge was the most severe,reaching-23 mm/a.In addition,the L1 high-speed railway section had a high settlement rate near the railway,the highest rate up to-16 mm/a,while the L2 section near the bridge had a highest settlement rate up to-24 mm/a.The research conclusion shows that PS InSAR technology can accurately identify and evaluate settlement risks in high-speed rail projects and provide important technical support for ensuring the safe operation of the high-speed rail network.This study can contribute to the security and reliability of China's high-speed rail network.

关 键 词：永久散射体合成孔径雷达干涉测量 高铁工程 PS点 沉降速率 

分 类 号：P237[天文地球—摄影测量与遥感]