高分辨率时序InSAR在矿区开采沉陷监测中的应用--以霄云矿区为例

煤炭资源的高强度开采在促进社会经济发展的同时,也造成了一系列地质环境问题。采煤沉陷区的综合治理及生态修复亟需矿区现状调查数据作为基础支撑,而现状数据的快速更新在监测效率、经济代价及可延续性方面对当前测量方法及工作手段提出了更高的要求。该文以济宁市霄云矿区为例,采用时序InSAR技术对2016—2018年间的15期高分辨率RADARSAT-2XF模式影像开展解译处理,获取霄云矿区的时空形变特征,并结合不同时段开采工作面位置进行了监测结果分析。结果表明,高分辨率时序InSAR技术能够有效识别矿区开采引起的形变迹象,满足采煤沉陷区下沉信息精确获取的监测要求,为大范围开采沉陷信息的获取及影响程度的划定提供了可靠技术方法。

Application of High Resolution Time-Series InSAR in Mining Subsidence Monitoring

The high-intensity mining of coal resources has caused a series of geological environmental problems when promoting social and economic development. Comprehensive management and ecological restoration of coal mining subsidence areas urgently require the survey data of the mining area as the basic support. Rapid update of current data has put forward higher requirements on current measurement methods and working methods in terms of monitoring efficiency, economic cost and sustainability. Taking Xiaoyun mining area in Jining as an example, by using the time series InSAR technology, high-resolution RADARSAT-2XF model images in 15 periods from 2016 to 2018 have been Interpreted, and spatial and temporal deformation characteristics of Xiaoyun mining area have been obtained. Combining with the location of mining working face in different periods, monitoring results have been analyzed. It is showed that high-resolution time-series InSAR technology can effectively identify the signs of deformation caused by mining in the mining area, meet the monitoring requirements for accurate acquisition of subsidence information in the mining subsidence area, and provide a reliable technical method for acquisition of subsidence information in a wide range of mining and delineation of influence degree.