时序DInSAR在重复采动地表沉陷监测中的应用  

Subsidence monitoring caused by repeated excavation with time-series DInSAR

作　　者：刘振国[1] 卞正富[1] 吕福祥 董保权 

机构地区：[1]中国矿业大学环境与测绘学院江苏省资源环境信息工程重点实验室,江苏徐州221116 [2]山西焦煤西山煤电集团公司,山西太原030053

出　　处：《采矿与安全工程学报》2013年第3期390-395,共6页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(51174191);国家"十二五"科技支撑计划项目(2012BAC10B03)

摘　　要：基于TerraSAR-X高分辨率SAR数据,利用时序DInSAR技术监测矿区开采沉陷,探讨其在开采沉陷监测中的定量化应用。结合矿区工作面回采进度资料,对时序DInSAR结果进行分析,提取不同开采阶段的超前影响角、边界角、起动距等参数,以认识和描述上覆岩层存在重复采动时的地表沉陷规律。利用在工作面上方角反射器位置上同步获取的GPS观测结果对DInSAR技术进行验证,结果表明X波段SAR数据可以准确监测微小形变,从而保证了开采沉陷影响范围监测及角量参数提取的可靠性。The high resolution TerraSAR-X SAR data was used to monitor ground subsidence caused by underground coal mining activities with time-series DInSAR method. Analysis was made based on the detailed stoping records of the related working face. With the identified bounds of subsidence, some angular parameters, such as advanced influence angle, angle of subsidence and moving distance were derived. These parameters could be used to depict the evolution of ground subsidence caused by re- peated coal excavation, which is quite different compared with subsidence caused by the first mining. In the end, terrestrial GPS surveying results, which were carried out at the same date when SAR image was acquired, were used to evaluate the DInSAR technology. The results confirm the reliability and validity of X-band SAR data in terms of subsidence boundary extraction and related angular parameters deriva- tion, thus promoting the quantitative application of DInSAR technology.

关 键 词：时序DInSAR 重复采动 超前影响角 边界角 起动距 TERRASAR-X 

分 类 号：TD353[矿业工程—矿井建设]