DS-InSAR monitoring and analysis of surface abnormal deformation caused by fault activation in hanging wall mining
In order to solve the problems faced by conventional time-series InSAR technology in the fine monitoring of surface deformation in mining areas,such as few monitoring points,low monitoring accuracy,and difficulty in obtaining spatio-temporal processes.This article takes the hanging wall mining of the 132 158 working face of Wannian Mine in Fengfeng Mining Area as an example,uses 12 Sentinel-1A images and DS-InSAR technology to improve the density of monitoring points,obtains the impact process of mining process interruption layer on the spatial distribution of surface deformation,identifies the specific location of fault surface exposure and surface fracture area,and analyzes the main factors affecting the accuracy of DS-InSAR monitoring.Through the leveling measurement data of 28 surface movement observation stations deployed on the ground,the accuracy of DS-InSAR technology in monitoring the area was verified to be 13.2 millimeters,indicating that DS-InSAR technology can be used for high-precision identification of surface abnormal deformation in mining operations with fault disturbance.
万方数据
维普
