基于时序InSAR技术的甘肃金川铜镍矿区地表沉降研究  

The sequential InSAR technology-based study on surface subsidence of Jinchuan Cu-Ni mining area,Gansu province

作　　者：李强 王卫红 杨宁[2,3] 熊高翔 雷欢欢[1] 李凯 LI Qiang;WANG Weihong;YANG Ning;XIONG Gaoxiang;LEI Huanhuan;LI Kai(Sichuan Institute of Metallurgical Geology and Exploration, Chengdu 610051, China;Mianyang Science and Technology City Branch of National Remote Sensing Center, Mianyang 621010, Sichuan, China;School of Environment and Resources, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China)

机构地区：[1]四川省冶金地质勘查院,成都610051 [2]国家遥感中心绵阳科技城分部,四川绵阳621010 [3]西南科技大学环境与资源学院,四川绵阳621010

出　　处：《地质找矿论丛》2021年第2期221-227,共7页Contributions to Geology and Mineral Resources Research

基　　金：国家自然科学基金项目(编号:41204068);四川省教育厅重点项目(编号:15ZA0120)联合资助。

摘　　要：文章采用时序InSAR技术对甘肃省金川铜镍矿区域地表沉降规律开展研究。利用Sentinel-1A干涉影像,基于SBAS-InSAR技术和时序D-InSAR技术,反演2018年1月—11月金川铜镍矿区域地表沉降。经过2种技术结果对比及验证分析表明,2018年矿区有2个沉降漏斗,分别是西二采区57行和老矿坑。西二采区57行的最大沉降速率为-14 mm/a,雷达视线向累积最大形变量为13 mm,地面形变呈平稳态势;老矿坑东南方存在明显的沉降,沉降最大速率为-85 mm/a,雷达视线向累积最大形变量为78 mm。On basis of the SBAS-InSAR technology and time series D-InSAR technology Sentinel-1A interference images are used to retrieve the surface subsidence of Jinchuan Cu-Ni mining area from Jan.to Nov.2018.Comparison analysis of the two technologies'result shows that in 2018 occur two subsidence funnels in the mining area.One is at row 5-7 of the West 2 mining area,the other at the old pit.The maximum subsidence of the West 2 mining area is-14 mm/a,the cumulative maximum deformation in the radar line of sight 13 mm,the surface deformation stable.Severe subsidence is at the southeast of the old pit where the maximum subsidence rate is-85 mm/a,the cumulative maximum deformation in the radar line of sight 78 mm.

关 键 词：金川铜镍矿 时序D-InSAR技术 SBAS-InSAR技术 Sentinel-1A影像 地表沉降 甘肃省 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置] TD7[自动化与计算机技术—控制科学与工程]