Study on surface settlement of Jinchuan copper- nickel area in time series InSAR

摘要

Surface settlement problem in Jinchuan copper-nickel mine area, this paper applies SBAS-InSAR technology and time series D-InSAR technology, and uses multi-temporal Sentinel-1A interference image to study the ground settlement in this area. Timing D-InSAR technology and SBAS-InSAR technology are used for monitoring. After two results comparison and verification analysis, there are two obvious settlement funnels in the mining area, namely 5-7 rows and old pits in the West 2 mining area, and the maximum settlement rate in the 5-7 rows in the West 2 mining area is -13mm/year. The maximum line shape of the radar line of sight is 13mm, and the settlement area reaches 0.45km~2. There is obvious settlement in the southeast of the old pit. The maximum rate of settlement is -85mm/year, and the maximum line shape of the radar line of sight is 78mm. The settlement area has reached 1.4km~2 provides an important basis for the safe production of Jinchuan copper-nickel mine.