基于时序InSAR技术的武汉大型垃圾填埋场形变监测与分析

李晨程, 江利明, 吴宇轩, 史绪国, 赖振炎, 金源

李晨程, 江利明, 吴宇轩, 史绪国, 赖振炎, 金源. 基于时序InSAR技术的武汉大型垃圾填埋场形变监测与分析[J]. 武汉大学学报 ( 信息科学版). DOI: 10.13203/j.whugis20240335
引用本文: 李晨程, 江利明, 吴宇轩, 史绪国, 赖振炎, 金源. 基于时序InSAR技术的武汉大型垃圾填埋场形变监测与分析[J]. 武汉大学学报 ( 信息科学版). DOI: 10.13203/j.whugis20240335
LI Chencheng, JIANG Liming, WU Yuxuan, SHI Xuguo, LAI Zhenyan, JIN Yuan. Monitoring Ground Displacement of Large-Scale Landfills in Wuhan Using Time-Series InSAR Technology[J]. Geomatics and Information Science of Wuhan University. DOI: 10.13203/j.whugis20240335
Citation: LI Chencheng, JIANG Liming, WU Yuxuan, SHI Xuguo, LAI Zhenyan, JIN Yuan. Monitoring Ground Displacement of Large-Scale Landfills in Wuhan Using Time-Series InSAR Technology[J]. Geomatics and Information Science of Wuhan University. DOI: 10.13203/j.whugis20240335

基于时序InSAR技术的武汉大型垃圾填埋场形变监测与分析

基金项目: 

湖北省自然科学基金创新群体项目(2021CFA028);国家自然科学基金(42174046)。

详细信息
    作者简介:

    李晨程,硕士生,主要从事InSAR基础设施监测与数值模拟研究。lichencheng@apm.ac.cn

    通讯作者:

    江利明,博导,研究员。jlm@apm.ac.cn

Monitoring Ground Displacement of Large-Scale Landfills in Wuhan Using Time-Series InSAR Technology

  • 摘要: 随着城市化进程加快,填埋场已成为一种安全经济处理固体废弃物的主要方式,其稳定性监测对于保障城市居民生命财产安全具有重要意义。本文以武汉市陈家冲和长山口生活垃圾填埋场为例,基于Sentinel-1两个相邻轨(Path113和Path40) SAR影像,采用小基线集合成孔径雷达干涉测量( small baseline subset interferometric synthetic aperture radar,SBAS-InSAR)技术获取了包含该两个大型垃圾填埋场在内的武汉部分城区2017~2024年间地表形变信息,并利用多通道奇异谱(multichannel singular spectrum analysis,MSSA)方法重建了地表形变和ERA5气温降雨的季节性。结果表明:研究区85%的区域相对稳定,Path113和Path40的视线向(line of sight,LOS)形变速率范围分别为-55.3~39.6mm/a、-47.3~22.7mm/a;长山口填埋场LOS向最大沉降速率(40.0mm/a)位于边坡区域,陈家冲填埋场LOS向最大沉降速率(55.3mm/a)位于中部堆积体区域;垃圾填埋场的沉降主要受垃圾堆体的机械压缩、生化效应、气温和降雨影响,沉降相对于降雨迟滞100天左右,迟滞相关性为0.76,相对于气温迟滞60天左右,迟滞相关性为0.93; 2019年6月21日的暴雨加速了垃圾填埋场的沉降。研究证实,InSAR技术能够有效监测垃圾填埋场地表沉降,可为垃圾填埋场安全管理和环境保护提供技术支撑。
    Abstract: Objectives: With the acceleration of urbanization, landfills have become a primary and economically viable solution for the safe disposal of solid waste. The stability monitoring of them is of great significance for ensuring the safety of urban residents' lives and property. Methods: Taking the Chenjiachong and Changshankou municipal solid waste landfills in Wuhan as examples, based on Sentinel-1 SAR images from two adjacent tracks (Path 113 and Path 40), this paper obtains ground deformation information of two large landfill sites in Wuhan urban areas by using small baseline subset interferometry synthetic aperture radar (SBAS InSAR) technology, from 2017 to 2024. To further analyze the seasonal, multichannel singular spectrum analysis (MSSA) was used to reconstruct surface deformation and ERA5-derived temperature and rainfall patterns. Conclusions: The results indicate that approximately 85% of the study area remained relatively stable, with line-of-sight (LOS) deformation rates ranging from -55.3 to 39.6 mm/year for Path 113 and -47.3 to 22.7 mm/year for Path 40. The maximum LOS subsidence rate at the Changshankou landfill (40.0 mm/year) was observed in the slope area. While the maximum LOS subsidence rate (55.3 mm/year) was located in the central accumulation area at the Chenjiachong landfill. Subsidence at these landfills is primarily influenced by the mechanical compression of the waste body, biochemical processes, temperature, and rainfall, with a lag of approximately 100 days relative to rainfall (correlation of 0.76) and 60 days relative to temperature (correlation of 0.93). The heavy rainfall on June 21, 2019, further accelerated landfill subsidence. This study confirms that InSAR technology can effectively monitor surface subsidence at landfills, offering technical support for landfill safety management and environmental protection.
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出版历程
  • 收稿日期:  2024-12-17

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