基于SBAS-InSAR技术的山西西山煤田地区地表形变监测

Monitoring of Surface Deformation in Xishan Coalfield Area of Shanxi Province Based on SBAS-InSAR Technology

对矿区地表形变进行监测是煤炭安全生产和生态环境保护的重要前提和依据。以山西省西山煤田为实验区,利用矿区地表形变监测的典型方法——SBAS-InSAR技术,通过Envisat ASAR和Sentinel-1A雷达影像对2010年和2020年2个时期的地表形变进行了动态监测。监测结果表明:2个时段形变区域均受交城断裂和田庄断层的阻断影响,且断裂两侧区域形变的空间分布不同,引起形变的原因也可能不同;2020年地表形变累计沉降量呈"V"形反弹,沉降面积的快速减小可能与疫情对人们生产活动的影响有密切关系。与前人相似研究和GNSS实测数据对比显示,此监测结果可以在一定程度上满足实际的监测和管理需求,并为区域地表破坏及后期治理提供较为重要的依据。

Monitoring surface deformation in mining area is an important prerequisite and basis for coal production safety and ecological environment protection.Taking Xishan coalfield of Shanxi province as the experimental area,used a typical method of surface deformation monitoring in the mining area——SBAS-InSAR technology,to conduct dynamic monitoring of surface deformation in 2010 and 2020 through Envisat ASAR and Sentinel-1 A radar images.The monitoring results show that the deformation area is affected by the Jiaocheng fault and the Tianzhuang fault in both periods,and the spatial distribution of deformation on both sides of the fault is different,so the causes of deformation may be different;the cumulative subsidence of surface deformation in 2020 shows a "V-shaped" rebound,and the rapid decrease of subsidence area may be closely related to the impact of the COVID-19 on human production activities.Compared with previous similar studies and GNSS measured data,this monitoring result can meet the actual monitoring and management needs to a certain extent,and provide a relatively important basis for regional surface damage and later treatment.