东北大学学报(自然科学版) ›› 2022, Vol. 43 ›› Issue (6): 897-904.DOI: 10.12068/j.issn.1005-3026.2022.06.019

• 资源与土木工程 • 上一篇    下一篇

基于时序InSAR技术的近距离多煤层参数反演方法

刘翠芝1, 王兴杰1, 贺黎明1, 唐永亮2   

  1. (1. 东北大学 资源与土木工程学院, 辽宁 沈阳110819; 2. 辽宁省地质环境监测总站, 辽宁 沈阳110032)
  • 修回日期:2021-07-12 接受日期:2021-07-12 发布日期:2022-07-01
  • 通讯作者: 刘翠芝
  • 作者简介:刘翠芝(1965-),女,黑龙江绥化人,东北大学副教授.
  • 基金资助:
    国家自然科学基金资助项目(41974028); 中央高校基本科研业务费专项资金资助项目(N180104014).

Parameter Inversion Method of Close Multi-coalseam Based on Time Series InSAR

LIU Cui-zhi1, WANG Xing-jie1, HE Li-ming1, TANG Yong-liang2   

  1. 1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China;2. Liaoning Geological Environment Monitoring Station, Shenyang 110032, China.
  • Revised:2021-07-12 Accepted:2021-07-12 Published:2022-07-01
  • Contact: HE Li-ming
  • About author:-
  • Supported by:
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摘要: 近距离多煤层开采引起的采空区地面沉降在当前工矿区沉陷中占有较大的比例,而天基InSAR技术在工矿区大范围形变监测方面具有显著优势.以2018年1月至2019年8月间的43景C波段Sentinel-1B SAR数据为基础,通过时序InSAR技术对近距离多煤层开采的康平煤田进行了大范围沉降监测.以Okada模型为基础,结合近距离多煤层分布特征,采用叠加理论的原则,提出了一种基于多源模型的近距离多煤层参数反演方法.通过定量计算弹性半空间下双源模型和三源模型近距离多煤层参数反演的精度,发现三源模型精度更高,更符合小康矿近距离多煤层开采的实际特征.本研究可以为基于InSAR技术的近距离多煤层开采沉降监测及参数反演提供参考.

关键词: 近距离多煤层;参数反演;时序InSAR;多源Okada模型;形变模拟

Abstract: Ground subsidence caused by close multi-coalseam mining occupies a large proportion in current mining activities. Due to the significant advantages of space-based InSAR technique in large-scale deformation monitoring, the subsidence caused by the close multi-coalseam mining in Kangping coalfield was monitored based on the 43 scenes C-band Sentinel-1B SAR data from January 2018 to August 2019. Considering the distribution characteristics of the close multi-coalseam, a close multi-coalseam parameter inversion method using superposition theory based on multi-source Okada model was proposed. By quantitatively calculating the accuracy of inversion results of dual-source model and three-source model of close multi-coalseam in elastic half space, it is found that the three-source model has a higher accuracy, which is consistent with the actual characteristics of the close multi-coalseam of the Xiaokang mine. This study provides some references to the subsidence monitoring and parameter inversion of close multi-coalseam mining.

Key words: close multi-coalseam; parameter inversion; time series InSAR; multi-source Okada model; deformation modeling

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