基于SBAS技术的露天煤矿地表沉降监测与分析

Monitoring and analysis of ground subsidence in open-pit coal mines based on SBAS technology

煤炭是一种重要的能源,在国家经济发展中起到了重要作用。为了减少煤炭开采后地面沉降带来的负面影响,对矿区地面进行监测,并研究其地面沉陷的规律是十分必要的。合成孔径雷达干涉测量技术具有全时段监测,成像不受气候影响,监测范围广等特点,相比传统监测方法优势明显。基于胜利一号露天煤矿15景Sentinel-1A影像数据,采用小基线子集方法(SBAS),对胜利一号露天煤矿进行多时相监测,获得矿区2022年10月—2023年3月时间段内地面沉降区域的分布和变化趋势。并对SBAS监测结果进行了实地勘察验证,证明了SBAS技术应用于矿区地面沉降监测的可靠性。

Coal is an important energy and has played an important role in the development of national economy.In order to reduce the negative impact of ground subsidence after coal mining,it is necessary to monitor the ground and study the law of ground subsidence.Synthetic aperture radar interferometry technology has the characteristics of whole-time monitoring,imaging is not affected by climate,wide monitoring range and so on,which has obvious advantages compared with traditional monitoring.methods.Based on 15 Sentinel-1 A image data,small baseline subset method(SBAS)was adopted to conduct multi-temporal monitoring of Shengli No.l open-pit coal mine,and the distribution and variation trend of land subsidence area in the mining area from October 2022 to March 2023 were obtained.And the results of the SBAS monitoring are verified by field investigation,which proves the reliability of the SBAS technology applied to the monitoring of land subsidence in mining areas.