SBAS InSAR技术在矿区地面沉降监测中的应用

Application of SBAS InSAR in monitoring mining land subsidence

基于SBAS InSAR技术在大区域、长时间地表形变监测中的优势,分析了SBAS InSAR的技术原理和数据处理流程。利用该技术对覆盖滕州市附近矿区的12景ENVISAT ASAR影像进行处理,获取了矿区2009年1月20日-2010年10月12日的沉降速率和累积沉降量等信息,较为直观地展现了各成像时刻的沉降状况。结果表明:煤矿较多的欢城镇、西岗镇及鲍沟镇等均有较大沉降发生,累积沉降最大可达80mm,沉降速率最大达到58mm/a。

Based on the advantages of SBAS InSAR in large area and long-term surface deformation monitoring,the principle and data processing of SBAS InSAR are studied and analyzed.The 12 ENVISAT ASAR images covering the mining area near Tengzhou city are processed by the above technology.The subsidence velocity,cumulative subsidence and other information from the period of January 20 th,2009 to October 12 th,2010 in the mining area are obtained to intuitively display the subsidence information at each imaging time.In the Huancheng,Xigang and Baogou towns,there is relatively large subsidence.The maximum cumulative subsidence magnitude reached 80 mm,and the maximum subsidence velocity reached 58 mm each year.