摘要
针对InSAR技术在矿区形变监测中存在视线向模糊问题。本文利用Sentinel-1A升、降轨数据,以昆阳磷矿为研究区并结合小基线集干涉测量技术(SBAS-InSAR)提取LOS向形变速率,基于最小二乘法联合升降轨进行二维形变解算。结果表明:基于最小二乘法获取矿区二维形变结果具有较高可靠性,与GNSS监测数据验证RMSE值均小于4.5 mm;昆阳磷矿整体沉降严重,垂直向平均形变速率为-27 mm/a,东西向平均形变速率为9 mm/a,区域主要以垂直向沉降为主,多处区域并发东西向位移。该研究旨在为昆阳磷矿安全开采及InSAR二维形变监测技术在矿区中的应用提供数据参考。
To address the problem of line-of-sight(LOS)directional blurring in InSAR deformation monitoring in mining areas using single-track SAR images.In this paper,we use the Sentinel-1A lifting and lowering track images to extract the LOS-directional deformation rate by combining the small baseline set interferometry(SBAS-InSAR)with the study area of Kunyang phosphate mine,and carry out the 2D deformation solution based on the least squares method jointly with the lifting and lowering tracks to obtain the 2D deformation rate and cumulative subsidence value in the area,and analyze the surface subsidence of the mine area statistically.The results show that the monitoring results of different tracks are different due to the influence of geometric imaging;the results of 2D deformation in the mine area based on the least squares method are highly reliable,and the RMSE values are less than 4.5mm when verified with the actual GNSS data;the overall settlement of the Kunyang phosphate mine is serious,with an average deformation rate of-27mm/a in the vertical direction and 9mm/a in the east-west direction,the vertical subsidence is dominant in the area,and many areas are concurrently displaced in the east-west direction.This study aims to provide data reference for the safe mining of Kunyang phosphate mine and the application of InSAR two-dimensional deformation monitoring technology in the mine area.
作者
李杰
吴坤雄
陈德智
林天仲
庄惠
LI Jie;WU Kunxiong;CHEN Dezhi;LIN Tianzhong;ZHUANG Hui(Hainan Provincial Institute of Water Resources and Hydropower Survey,Design and Research Institute Co.,Ltd.,Haikou 570100,China)
出处
《城市勘测》
2025年第4期175-182,共8页
Urban Geotechnical Investigation & Surveying
关键词
二维分解
SBAS-InSAR
形变监测
最小二乘法
two-dimensional decomposition
SBAS-InSAR
deformation monitoring
least squares method
作者简介
第一作者:李杰(1995-),男,硕士,研究方向:InSAR数据处理与应用研究。E-mail:1091247209@qq.com;通信作者:吴坤雄(1972-),男,高级工程师,研究方向:水利工程测量。E-mail:571661694@qq.com。
