张剑,柯宝贵,刘同木,曹炳强

• 1:兰州交通大学测绘与地理信息学院
• 2:中国测绘科学研究院
• 3:地理国情监测技术应用国家地方联合工程研究中心
• 4:甘肃省地理国情监测工程实验室

摘要(Abstract)：

针对兰州市中心城区的地面沉降问题,该文采用PS-SBAS和PS-InSAR技术,利用2016-01-20—2019-02-21时间段内的39景Sentinel-1A/B降轨数据,使用缓冲区分析技术对兰州市中心城区轨道交通线和铁路线周边100 m区域做了沉降影响分析,监测结果表明:基于Sentinel-1A/B数据和时序InSAR技术,可以准确监测城市地表的沉降和轨道交通线的沉降时空规律;沉降区域主要集中在研究区东南部的方家泉村、和平镇和猪咀岭村;软土地基下地铁的施工会导致沉降现象的发生,兰州轨道交通线和铁路线的沉降主要发生在城区东南方向;在监测时段内,使用两种时序InSAR技术监测的同名点在沉降趋势和累计沉降量上保持了良好的一致性和吻合性,但PS-InSAR的时序变化曲线较PS-SBAS更为平缓。

关键词(KeyWords)： PS-InSAR;PS-SBAS;沉降监测;时间序列分析;兰州市

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目（41874022）;; 兰州交通大学优秀平台支持项目（201806）

作者(Author): 张剑,柯宝贵,刘同木,曹炳强

DOI: 10.16251/j.cnki.1009-2307.2021.01.013

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