Abstract:In order to effectively acquire the long time series deformation of mining area and monitor the influence of coal mining on railway, a railway deformation monitoring method based on TCP-InSAR (temporarily coherent point interferometric synthetic aperture radar) is studied. According to the coherence between SAR images in time series, this method selects temporary coherent points to construct Delaunay triangulation network, removes arcs with phase ambiguity between TCPs through outlier detection, and finally obtains the regional surface deformation by least squares solution. Based on 15 Sentinel-1A data from October 2016 to April 2017, using TCP-InSAR technology obtains the railway deformation in the mining area. The experimental results show that the maximum subsidence value of the railway is 95 mm and the maximum inclined slope is 0.37 per thousand during the mining period. The TCP-InSAR technology can be used to monitor the long time dynamic deformation of the railway in the mining area.
LU Lu,FAN Hongdong,ZHENG Meinan et al. Dynamic Settlement Monitoring and Time Series Analysis of Railway in Mining Area Based on TCP-InSAR[J]. jgg, 2019, 39(2): 164-168.