Combination of Conventional and Advanced DInSAR to Monitor Very Fast Mining Subsidence with TerraSAR-X Data: Bytom City (Poland)

Abstract

In this work,

Application of DInSAR in Mine Surface Subsidence Monitoring and Prediction

“…SqueeSAR incorporates PSInSAR and no information is lost. Przylucka et al 35 have shown the capabilities of SqueeSAR for detecting and monitoring mining subsidence in urban areas of the upper Silesian coal basin of Poland. The complexity of open-pit iron mining in Carajás Mineral Province, Brazil, makes DInSAR a challenging application.…”

“…They established the relevance of the PSInSAR technique in studying the deformation before the major subsidence, when no levelling data were recorded. Przylucka et al 35 demonstrated that using high-resolution TerraSAR-X data in both conventional and advanced DInSAR approaches was effective for detecting and monitoring fast-evolving mining subsidence in urban areas in the upper Silesian coal basin of Poland. The main design parameters that influence the feasibility and accuracy of PSInSAR are the number of acquisitions (images; N), the temporal baseline (B T ) and spatial/perpendicular baseline (B  ).…”

“…A slow and local phenomenon of subsidence due to underground coal mining was identified near Gardanne, France by Carnec and Delacourt 4 from images acquired by ERS-1/ERS-2 satellites between 1992 and 1995. Interferometric monitoring has shown that the impact of subsidence on the surface migrated all along the path of advancement of the underground operations establishing a direct relationship between them 4,26,35,37 . The application of SAR interferometry to identify surface displacements through DInSAR has shown its great potential and has developed manifold over the last decade.…”

“…Both limitations need a careful assessment before starting any new PSI analysis. In 2010 a new algorithm -SqueeSAR 35,65,66 -was developed. This is an extension of the PSInSAR algorithm, that exploits both 'point-wise' PS and also provides information in low reflectivity homogeneous areas by identifying 'spatially distributed scatterers' (DS).…”

“…Many PSI approaches have been developed over the years; their description is beyond the scope of this article. Examples of PSInSAR application in the field of mine surface 14,15,25,26,28,30,34,35,38 and urban [54][55][56][57][58][59][60][61][62][63][64] subsidence have shown the large spectrum of this technique on ground deformation assessment. About 21 TerraSAR X-band ( -3.1 cm) images have been used by Liu et al 28 to extract subsidence hazard map (SHM) around Xishan coal mine in China, that suffered from subsidence related to underground mining activities.…”