Monitoring Land Surface Subsidence of Coal Mines Using D-InSAR Technology
Mining coal resources may trigger various geological disasters,threatening the social stability of mining areas and the safety of residents'lives and property.Rapid and accurate monitoring of subsidence in mining areas can effectively prevent geological disasters.This study examined the Datong coal mine in Shanxi Province and 13 Sentinel-1 images from October 2022 to March 2023 were used to obtain the rate of land subsidence and cumulative subsidence of Datong coal mine based on Differential Interferometric Synthetic Aperture Radar(D-InSAR).The reliability of the experimental results was verified by comparing existing research results.The results show that subsidence of Datong coal mine is widely distributed,mainly in the west of Nanjiao County of Datong City and the junction of Datong City,Huairen City,Zuoyun County and Shanyin County.During the period of monitoring the maximum and average subsidence were-381.43 mm and-13.88 mm,respectively,and the total subsidence area was approximately 207.91 km2.Based on spatiotemporal variation and changes in rates of subsidence of the seven typical subsidence areas,it was demonstrated that subsidence exhibited continuous expansion.It was inferred that land subsidence will continue for a long time.The study proves the reliability of InSAR technology in monitoring mining subsidence,and provides a new method for management of mineral resources.The research results also provide a reference for the control of mining subsidence and prevention of geological disasters.
Datong coal mineD-InSARsubsidence of mining areasland deformation monitoringgeological disasterSentinel-1
万方数据
维普
