Coal Mining Deformation Monitoring Using SBAS-InSAR and Offset Tracking: A Case Study of Yu County, China
Coal Mining Deformation Monitoring Using SBAS-InSAR and Offset Tracking: A Case Study of Yu County, China
复制标题
利用 SBAS-InSAR 和偏移跟踪进行煤矿开采变形监测：以中国蔚县为例
DOI：
10.1109/jstars.2020.3028083
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发表时间：
2020-01-01
影响因子：
5.5
通讯作者：
Tan, Kun
中科院分区：
文献类型：
--
作者：
Chen, Yu;Tong, Yunxiao;Tan, Kun
地下煤炭开采引起的地面变形沉降梯度大、非线性强，开采后可能对地表结构造成持续破坏。合成孔径雷达干涉测量（InSAR）是测量和重建地面位移的强大方法。本文利用小基线子集（SBAS-InSAR）算法集成了总共 19 个下降轨道 X 波段 TerraSAR-X 和 16 个上升轨道 C 波段 Sentinel-1 影像，对中国河北省蔚县煤矿区的地面位移进行了监测。我们发现，通过结合来自 TerraSAR-X 和 Sentinel-1 数据集的变形率，SBAS-InSAR 技术可以在没有高梯度变形的区域获得可靠的结果。 2015年6月17日至2016年1月7日期间，最大沉降速率约为125毫米/年。在大梯度变形的情况下，由于SAR波长的限制，利用传统的多时相（MT-InSAR）技术确实很难准确获得采矿引起的地表沉降信息。针对这一问题，提出了一种基于SBAS-InSAR和偏移跟踪的决策融合新方法，用于监测矿区大梯度沉降。结果表明，该方法弥补了传统MT-InSAR技术在大梯度变形领域的不足，取得了可靠的结果。
Ground deformation caused by underground coal mining has a large subsidence gradient and high nonlinearity and may cause continuous destruction to the surface structure after mining. A synthetic aperture radar interferometry (InSAR) is a powerful method for measuring and reconstructing the ground displacement. In this article, a total of 19 descending orbit X-band TerraSAR-X and 16 ascending orbit C-band Sentinel-1 images were integrated to monitor the ground displacement of a coal mining area in Yu County (Hebei Province, China) using a small baseline subset (SBAS-InSAR) algorithm. We found that the SBAS-InSAR technology can obtain reliable results in regions without a high gradient deformation by combining the deformation rates derived from both the TerraSAR-X and Sentinel-1 datasets. The maximum subsidence rate was approximately 125 mm/y between 17 June 2015 and 07 January 2016. In the case of large-gradient deformation, it is indeed difficult to obtain the mining-induced surface subsidence information accurately using the conventional multitemporal (MT-InSAR) techniques owing to the limitations of the SAR wavelength. In response to this problem, a new decision-making fusion method based on SBAS-InSAR and offset tracking was developed to monitor the large-gradient settlement in mining areas. The results show that the method developed compensates for the shortcomings of the traditional MT-InSAR technologies in the field of large-gradient deformation and obtains reliable results.