基于SBAS-InSAR的鞍山露天矿区地表形变监测与分析  

SBAS-InSAR-Based Monitoring and Analysis of Surface Deformation in Anshan Open-Pit Mining Area

作　　者：张璨 刘国祥 王晓文 蔡堃 

机构地区：[1]西南交通大学地球科学与环境工程学院,四川 成都

出　　处：《测绘科学技术》2023年第2期147-157,共11页Geomatics Science and Technology

摘　　要：矿区开采会导致地表发生显著沉降,并可能诱发泥石流、滑坡等地质灾害。本文以辽宁省鞍山市为研究区,基于2015年5月至2016年8月之间的COSMO-SkyMed高分辨率SAR影像,利用SBAS-InSAR技术获取了研究区的地表形变特征,并重点分析了东鞍山和齐大山露天矿区。结果表明,研究区整体形变速率在−6.0 cm/yr~5.6 cm/yr之间,齐大山矿区形变速率为−6.0 cm/yr~2.9 cm/yr;东鞍山矿区形变速率为−3.8 cm/yr~4.7 cm/yr,铁矿外东南侧存在显著的LOS向沉降信号。此外,研究还发现鞍山市铁西区东北侧工业区有明显沉降漏斗,最大沉降速率约为−3.8 cm/yr。研究结果揭示了利用高分辨率SAR进行露天矿区地表形变监测的重要性,InSAR技术可有效服务于露天矿区地表稳定性的监测。Mining can lead to significant surface subsidence and may induce geological hazards such as mud-slides and landslides. In this paper, the surface deformation characteristics of the study area were obtained based on COSMO-SkyMed high-resolution SAR images between May 2015 and August 2016 using SBAS-InSAR technology with a focus on the East Anshan and Qidashan open-pit mines in Anshan City, Liaoning Province as the study area. The results showed that the overall deformation rate of the study area ranged from −6.0 cm/yr to 5.6 cm/yr, and the deformation rate of Qidashan mine area was −5.9 cm/yr to 2.9 cm/yr;the deformation rate of East Anshan mine area was −3.8 cm/yr to 4.7 cm/yr, and there was a significant LOS-oriented subsidence signal on the outer south-east side of the mine. In addition, the study also found that there is a significant subsidence vul-nerability in the northeast industrial area of Tiexi District, Anshan City, with a maximum subsid-ence rate of about −3.8 cm/yr. The results of the study reveal the importance of using high- resolu-tion SAR for surface deformation monitoring in open-pit mining areas, and InSAR technology can effectively serve the monitoring of surface stability in open-pit mining areas.

关 键 词：高分辨率SAR 辽宁省鞍山市 形变速率 露天矿区 地表稳定性 地表形变 沉降速率 矿区开采 

分 类 号：TN9[电子电信—信息与通信工程]