摘要
矿区地面沉降具有“快速”位移和高度非线性的特点,常用的DInSAR和SBAS InSAR均无法获得连续高精度的地面沉降监测结果。本文基于覆盖淮南丁集煤矿的17景Sentinel-1 SAR影像分别进行累积DInSAR和SBAS InSAR处理,利用Kriging插值对两种差分干涉技术得到的结果进行集成,获取2020年10月17日~2021年4月17日期间的矿区地面沉降信息,并对监测结果进行评估和分析。研究结果表明:丁集煤矿开采沉降现象严重,监测时段内丁集煤矿共有4个沉降漏斗,DInSAR和SBAS InSAR监测到的沉降位置、范围和变化趋势基本吻合,但两者所得的沉降量差异较大。而基于Kriging插值的DInSAR和SBAS InSAR集成结果,在沉降漏斗边缘区域很好地保持了SBAS InSAR的监测精度,并且有效地解决了SBAS InSAR在沉降漏斗区无法获取高相干像元产生空洞的问题,得到了连续高精度的矿区地面沉降结果,为矿区沉降监测提供了有效途径。
The land subsidence in mining area has the characteristics of“fast”displacement and high nonlinear,and the common DInSAR and SBAS InSAR cant obtain continuous and high precision land subsidence monitoring results.In this paper,based on 17 Sentinel-1 SAR images covering Dingji coal mine in Huainan,cumulative DInSAR and SBAS InSAR processing were carried out respectively,and Kriging interpolation was used to integrate the results obtained by the two differential interferometer techniques.The land subsidence information of the mining area from October 17,2020 to April 17,2021 was obtained,and the monitoring results were evaluated and analyzed.The results show that the settlement location,range and variation trend of Dingji coal mine monitored by DInSAR and SBAS InSAR are basically consistent,but the settlement amount obtained by DInSAR and SBAS InSAR is quite different.However,the integration results of DInSAR and SBAS InSAR based on Kriging interpolation maintain the monitoring accuracy of SBAS InSAR well at the edge of the settlement funnel,and effectively solve the problem that SBAS InSAR cannot obtain highly coherent pixels in the settlement funnel region to produce holes.The continuous and high precision ground subsidence results are obtained,which provides an effective way for monitoring subsidence in mining area.
作者
张树衡
赵萍
王宁
赵思逸
李湘凌
宋仁亮
赵卫东
马雷
Zhang Shuheng;Zhao Ping;Wang Ning;Zhao Siyi;Li Xianging;Song Reniang;Zhao Weidong;Ma Lei(School of Resource and Environmental Engineering,Hefei University of Technology,Hefei 230009;Anhui Geological Environment Monitoring Station,Hefei 230001)
出处
《地质科学》
CAS
CSCD
北大核心
2023年第4期1521-1534,共14页
Chinese Journal of Geology(Scientia Geologica Sinica)
基金
安徽省公益性地质工作项目“淮南市生态地质调查”(编号:2021-g-2-7)资助。
