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Remote Sensing Technology and Application  2022, Vol. 37 Issue (4): 1021-1028    DOI: 10.11873/j.issn.1004-0323.2022.4.1021
    
Monitoring and Analysis of Coal Mining Subsidence based on SBAS-InSAR Method
Xiangning Zhang1(),Liming He1(),Cuizhi Liu1,Xingjie Wang1,Yongliang Tang2,Ronghua He1
1.School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China
2.Liaoning Geo -environmental Monitoring Station,Shenyang 110000,China
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Abstract  

The surface deformation caused by large-scale mining of underground coal resources results in serious safety and environmental hazards. Radar interferometry technology is one of the important means of high-precision and large-scale surface deformation monitoring. This paper takes Puhe coal mine in Shenbei New District, Shenyang City, Liaoning Province as an example, SBAS-InSAR method is used to detect the surface deformation results in the mining area from 2018 to 2019, and the temporal and spatial distribution characteristics of surface deformation caused by coal mining are obtained. Combined with the geological conditions and deformation inducing factors of the mining area, numerical simulation technology is used to simulate and analyze the observed deformation results, and then the deformation law and mechanism of land subsidence in time and space of the Puhe coal mine is discussed. The InSAR deformation results show that there are two subsidence centers in the mining area, and the numerical simulation results are consistent with the observed InSAR deformation results, and the inversion results are close to the actual situation, which could provide scientific information for disaster prevention of land subsidence in the mining region.

Key words:  Coal mine      Ground subsidence      SBAS-InSAR      Okada model     
Received:  15 April 2021      Published:  28 September 2022
TP722.6  
Corresponding Authors:  Liming He     E-mail:  332814679@qq.com;heliming@mail.neu.edu.cn
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Articles by authors
Xiangning Zhang
Liming He
Cuizhi Liu
Xingjie Wang
Yongliang Tang
Ronghua He

Cite this article: 

Xiangning Zhang,Liming He,Cuizhi Liu,Xingjie Wang,Yongliang Tang,Ronghua He. Monitoring and Analysis of Coal Mining Subsidence based on SBAS-InSAR Method. Remote Sensing Technology and Application, 2022, 37(4): 1021-1028.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2022.4.1021     OR     http://www.rsta.ac.cn/EN/Y2022/V37/I4/1021

Fig.1  Distribution of study area
序号参数Sentinel-1
1轨道方向升轨
2入射角37.1°
3航向角-166.2°
4时间范围20180111—20190810
5影像数量42
Table 1  SAR satellite data parameters
Fig.2  Surface deformation map of Los time series (Time range 20180111—20190530)
Fig.3  The figure of deformation rate field, settlement amount in each period along the profile line and cracking building in the settlement area
序号参数最佳拟合参数
组一组二组三
1X/m-15.99644.91303.95
Y/m-24.01-1080.1-939.95
2长度/m615.99646.42640.73
3宽度/m352.91229.36320.6
4深度/m482.09568.67481.29
5走向/°24.5211.01147.68
6张量/m-0.59-0.04-0.67
Table 2  The best fitting parameters of Okada combination model in Puhe coal mine
Fig.4  Comparison of InSAR results and simulation results
Fig.5  The comparison of simulated and observed deformation of profile A1A2
Fig.6  The histogram of residual distribution
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