Subsidence monitoring in coal area using time-series InSAR combining persistent scatterers and distributed scatterers

Zhang, Zhengjia; Wang, Chao; Tang, Yixian; Fu, Qiaoyan; Zhang, Hong

doi:10.1016/j.jag.2015.02.007

Cited by 38 publications

(26 citation statements)

References 25 publications

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“…The results of processing satellite data have been compared with levelling measurements results. Other examples of satellite interferometry applications in assessing activity of mining and post-mining areas such as (Herrera et al, 2007;Jung et al, 2007;Jiang et al, 2011;Fan et al, 2014;Liu et al, 2014;Zhang et al, 2015;Bateson et al, 2015) indicate that the method has been widely applied to investigate mining related ground deformations.…”

Section: Methodsmentioning

confidence: 99%

Application of PSInSAR for assessment of surface deformations in post_mining area _ case study of the former Walbrzych Hard Coal Basin (SW Poland)

Milczarek¹

2016

Acta Geodynamica Et Geomaterialia

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The study presents results of surface displacements calculated with the PSInSAR technique for the area of the former Wałbrzych Hard Coal Basin (WHCB) in SW Poland. Underground mining of hard coal took place there until the late 90'ties of the 20 th Century. In accordance with the present state of knowledge, secondary deformations are a common phenomenon on post-mining areas. The chosen monitoring technique has provided data and has allowed study surface movements in Wałbrzych in the post mining period, for which no other, conventional surveys were available. In the analysis radar images acquired by the ENVISAT satellite for the 458 track and for the 2002-2009 period have been used. The results of PSInSAR data processing indicate elevation of the surface within the boundaries of former mining areas, reaching up to +6 mm/yr and on average +4 mm/yr. We assume that the end of mine water drainage and restoration of Carboniferous ground water table is the main factor responsible for this process and observe delayed response of the rock mass.

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Section: Methodsmentioning

confidence: 99%

Application of PSInSAR for assessment of surface deformations in post_mining area _ case study of the former Walbrzych Hard Coal Basin (SW Poland)

Milczarek¹

2016

Acta Geodynamica Et Geomaterialia

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“…The average mining depth is about 802 m and the average mining thickness is about 2.7 m. The length of workface along strike direction is about 1150 m and the length along dip direction is about 260 m. The direction of extraction is from west to east, the extraction time is about during from March 2012 to March 2013 and the average advancing rate is about 4 m/d. The study area is covered with farmlands, roads, rivers and some infrastructures (Dong et al, 2013(Dong et al, , 2015Zhang et al, 2015aZhang et al, , 2015b.…”

Section: Study Area and Datamentioning

confidence: 99%

Analysis of Mining-Induced Subsidence Prediction by Exponent Knothe Model Combined With Insar and Leveling

Chen

Zhang

Tang

et al. 2018

ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:The principle of exponent Knothe model was introduced in detail and the variation process of mining subsidence with time was analysed based on the formulas of subsidence, subsidence velocity and subsidence acceleration in the paper. Five scenes of radar images and six levelling measurements were collected to extract ground deformation characteristics in one coal mining area in this study. Then the unknown parameters of exponent Knothe model were estimated by combined levelling data with deformation information along the line of sight obtained by InSAR technique. By compared the fitting and prediction results obtained by InSAR and levelling with that obtained only by levelling, it was shown that the accuracy of fitting and prediction combined with InSAR and levelling was obviously better than the other that. Therefore, the InSAR measurements can significantly improve the fitting and prediction accuracy of exponent Knothe model.

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“…However, those advanced time-series InSAR methods have limitations on the suburb, due to the lack of enough measured points. In recent years, methods have been proposed by exploring distributed scatterers (DSs) [26][27][28], Quasi Persistent Scatterers (QPS) [29], Temporarily Coherent Point (TCP) [30], to overcome the limitation of insufficient coherence points in sub-urban and natural areas. Those techniques extended the measured points from persistent or coherent point to DS by using special selection and filtering techniques.…”

Section: Introductionmentioning

confidence: 99%

Surface Deformation Monitoring in Zhengzhou City from 2014 to 2016 Using Time-Series InSAR

Zhang

Wang

et al. 2018

Remote Sensing

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In recent years, with the development of urban expansion in Zhengzhou city, the underground resources, such as underground water and coal mining, have been exploited greatly, which have resulted in ground subsidence and several environmental issues. In order to study the spatial distribution and temporal changes of ground subsidence of Zhengzhou city, the Interferometric Synthetic Aperture Radar (InSAR) time series analysis technique combining persistent scatterers (PSs) and distributed scatterers (DSs) was proposed and applied. In particular, the orbit and topographic related atmospheric phase errors have been corrected by a phase ramp correction method. Furthermore, the deformation parameters of PSs and DSs are retrieved based on a layered strategy. The deformation and DEM error of PSs are first estimated using conventional PSI method. Then the deformation parameters of DSs are retrieved using an adaptive searching window based on the initial results of PSs. Experimental results show that ground deformation of the study area could be retrieved by the proposed method and the ground deformation is widespread and unevenly distributed with large differences. The deformation rate ranges from −55 to 10 mm/year, and the standard deviation of the results is about 8 mm/year. The observed InSAR results reveal that most of the subsidence areas are in the north and northeast of Zhengzhou city. Furthermore, it is found that the possible factors resulting in the ground subsidence include sediment consolidation, water exploitation, and urban expansion. The result could provide significant information to serve the land subsidence mitigation in Zhengzhou city.

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Subsidence monitoring in coal area using time-series InSAR combining persistent scatterers and distributed scatterers

Cited by 38 publications

References 25 publications

Application of PSInSAR for assessment of surface deformations in post_mining area _ case study of the former Walbrzych Hard Coal Basin (SW Poland)

Application of PSInSAR for assessment of surface deformations in post_mining area _ case study of the former Walbrzych Hard Coal Basin (SW Poland)

Analysis of Mining-Induced Subsidence Prediction by Exponent Knothe Model Combined With Insar and Leveling

Surface Deformation Monitoring in Zhengzhou City from 2014 to 2016 Using Time-Series InSAR

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