黄土填方区地表沉降时序InSAR监测分析

doi:10.13474/j.cnki.11-2246.2021.0262

测绘通报 ›› 2021, Vol. 0 ›› Issue (8): 158-161.doi: 10.13474/j.cnki.11-2246.2021.0262

• 测绘地理信息技术应用案例 • 上一篇下一篇

黄土填方区地表沉降时序InSAR监测分析

王建业¹, 梁小龙¹, 金喜², 白泽朝^3,4, 齐二恒¹

1. 机械工业勘察设计研究院有限公司, 陕西西安 710043;
2. 国家高分辨率对地观测系统青岛创新示范中心, 山东青岛 266555;
3. 北方工业大学电气与控制工程学院, 北京 100144;
4. 北方工业大学信息学院雷达监测技术实验室, 北京 100144

收稿日期:2021-06-07 出版日期:2021-08-25 发布日期:2021-08-30
作者简介:王建业(1984-),男,高级工程师,注册测绘师,主要从事工程测量和岩土工程监测。E-mail:413409417@qq.com
基金资助:
延安市成果转化与推广应用专项（2018CGZH-11）

Research on land subsidence using time-series InSAR technology in loess fill area

WANG Jianye¹, LIANG Xiaolong¹, JIN Xi², BAI Zechao^3,4, QI Erheng¹

1. China Jikan Research Institute of Engineering Investigations and Design, Co., Ltd., Xi'an 710043, China;
2. National High-resolution Earth Observation System Qingdao Innovation Demonstration Center School of Information Science and Technology, Qingdao 266555, China;
3. School of Electrical and Control Engineering, North China University of Technology, Beijing 100144, China;
4. Radar Monitoring Technology Laboratory, School of Information Science and Technology, North China University of Technology, Beijing 100144, China

Received:2021-06-07 Online:2021-08-25 Published:2021-08-30

摘要/Abstract

摘要： “削山填沟造地”等岩土工程在湿陷性黄土沟壑地区屡见不鲜，掌握填方区沉降情况具有重要意义。本文收集了2017年11月—2020年12月获取的56景TerraSAR-X StripMap模式影像，利用时序InSAR技术监测了陕北某湿陷性黄土填方地基工程的沉降信息，并与2017年11月—2020年12月期间监测区3个水准点的沉降测量结果比对。结果表明，在填方区地表以沉降为主，在挖方区地表以抬升为主，研究区存在有1处较为明显的地表沉降情况，位于填挖边界线附近填方区内，形变速率范围为-40~-20 mm/a，最大形变速率达-49.9 mm/a，累计量为-151.6 mm，时序InSAR形变结果和实地水准结果吻合性较好，垂直方向形变速率中误差为1.8 mm/a，表明时序InSAR技术在湿陷性黄土填挖方区变形监测中具有较好的应用价值。

关键词: 湿陷性黄土填方区, TerraSAR-X, 时序InSAR, 地面沉降

Abstract: Geotechnical engineering such as “cutting hills and filling ditches to build land” is not uncommon in collapsible loess gully areas. It is a great significance to known the subsidence of the fill area. 56 scenes of TerraSAR-X StripMap mode images were collected from November 2017 to December 2020. The time series InSAR technology is used to monitor the subsidence of a collapsible loess fill foundation project in northern Shaanxi. The subsidence measurement results of 3 benchmarking points are compared to verify the monitoring accuracy of the InSAR results. The results show that the surface of the fill area is dominated by subsidence, and the surface of the excavation area is dominated by uplift. There is a relatively obvious surface subsidence in the study area, which is located in the fill area near the fill-excavation boundary line. The subsidence rate range is -40~-20 mm/a. The maximum subsidence rate is -49.9 mm/a, and the cumulative subsidence is 151.6 mm. the time series InSAR subsidence results are in good agreement with the field leveling results. The error in the vertical subsidence rate is 1.8 mm/a, indicating InSAR technology has good application value in deformation monitoring of collapsible loess fill and excavation area.

Key words: collapsible loess fill area, terraSAR-X, time-sereis InSAR, land subsidence

中图分类号:

P258

王建业, 梁小龙, 金喜, 白泽朝, 齐二恒. 黄土填方区地表沉降时序InSAR监测分析[J]. 测绘通报, 2021, 0(8): 158-161.

WANG Jianye, LIANG Xiaolong, JIN Xi, BAI Zechao, QI Erheng. Research on land subsidence using time-series InSAR technology in loess fill area[J]. Bulletin of Surveying and Mapping, 2021, 0(8): 158-161.

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黄土填方区地表沉降时序InSAR监测分析

Research on land subsidence using time-series InSAR technology in loess fill area

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