基于SBAS-InSAR的某闭库尾矿库长时序形变监测  

Long-term Deformation Monitoring of a Closed Tailings Pond Based on SBAS-InSAR

作　　者：李柱 项晖 孟亚辉 方骞 王祥 LI Zhu;XIANG Hui;MENG Yahui;FANG Qian;WANG Xiang(China Railway Construction Tongguan Investment Co.,Ltd.)

机构地区：[1]中铁建铜冠投资有限公司,安徽省铜陵市244099

出　　处：《现代矿业》2025年第3期58-63,共6页Modern Mining

摘　　要：尾矿库作为一种高重力势能的危险源,若发生溃坝将会污染周围环境,影响周边安全,传统监测方法难以实现高效率、大范围、精细化的监测。通过利用短基线集合成孔径雷达干涉测量技术,实现对尾矿库形变的长时序、全方位及精细化的形变监测。以2022年2月-2024年3月共61景Sentinel-1A为数据源,利用SBAS-InSAR技术获取某露天铜矿尾矿库的时序形变信息,并结合实测形变数据进行分析。结果表明:与实测数据相比,监测结果的RMSE值分别为5.8和7.9 mm;第一时段坝体最大形变为-102.1 mm,并围绕库内水体形成一个沉降中心;第二阶时段坝体最大形变为-30.4 mm,形变量远小于第一时段,在监测中后期尾矿库形变趋于稳定。As a dangerous source of high gravitational potential energy,the tailings pond will pollute the surrounding environment and affect the surrounding safety if the dam breaks.Traditional monitoring methods are difficult to achieve high-efficiency,large-scale and refined monitoring.By using short-base-line integrated synthetic aperture radar interferometry technology,long-term,all-round and refined defor-mation monitoring of tailings reservoir deformation is realized.Taking 61 Sentinel-1A scenes from February 2022 to March 2024 as the data source,SBAS-InSAR technology is used to obtain the time series deforma-tion information of an open-pit copper mine tailings pond,and the measured deformation data are ana-lyzed.The results show that compared with the measured data,the RMSE values of the monitoring results are 5.8 and 7.9 mm,respectively.The maximum deformation of the dam in the first period is-102.1mm,and a settlement center is formed around the water body in the reservoir.The maximum deformation of the dam body in the second stage is-30.4 mm,and the deformation is much smaller than that in the first stage.The deformation of the tailings pond tends to be stable in the middle and late monitoring period.

关 键 词：尾矿库 SBAS-InSAR 形变监测 

分 类 号：TV6[水利工程—水利水电工程]