Multidimensional deformation monitoring using InSAR technology in Yuxian mining area

Authors

DU Jiantao, School of Geology Engineering and Geomatics, Chang’an University, Xi’an 710054, China
YAN Li, Xi’an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi’an 710077, China
ZHAO Chaoying, School of Geology Engineering and Geomatics, Chang’an University,Xi’an 710054, ChinaFollow

Abstract

Yuxian County in Hebei Province is one of the largest mining areas in North China. This area has been suffering serious ground deformation due to underground mining activity, which not only threatens mining safety, but also seriously damages local ecological environment. To obtain the surface deformation map of the overall mining area and to analysis the spatiotemporal evolution features, 61 C-band descending track and ascending track Sentinel-1A/B images from July 2017 to September 2018 were processed based on Interferometric Synthetic Aperture Rader(InSAR) technique. In addition, the two-dimensional deformation time series of Xixizhuang mine were obtained by using the multi-dimensional deformation time series estimation method with fusion multi-source SAR data. The results show that: Except Nanliuzhuang mine, the other three mines all have different degrees of ground subsidence disaster during the monitoring period; the area with annual deformation rate higher than -10 cm/a reached 2.16 km²; the deformation results obtained from different track data are different from each other; the main deformation in Xixizhuang mine is vertical deformation with obvious east-west horizontal deformation. The results provide beneficial data reference for ground subsidence monitoring and coal safety mining in Yuxian mining area.

Keywords

Interferometric Synthetic Aperture Radar (InSAR), Small Baseline Subsets (SBAS), subsidence monitoring, two-dimensional deformation, Yuxian mining area

DOI

10.3969/j.issn.10011986.2020.01.022

Recommended Citation

DU Jiantao, YAN Li, ZHAO Chaoying, et al. (2020) "Multidimensional deformation monitoring using InSAR technology in Yuxian mining area," Coal Geology & Exploration: Vol. 48: Iss. 1, Article 23.
DOI: 10.3969/j.issn.10011986.2020.01.022
Available at: https://cge.researchcommons.org/journal/vol48/iss1/23

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