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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。
Based on the TerraSAR-X high-resolution SAR data, the temporal DInSAR technique was used to monitor the mining subsidence and its quantitative application in the mining subsidence monitoring. Based on the data of mining progress in mining face, the DInSAR results are analyzed and the parameters such as advanced influence angle, boundary angle and starting distance are extracted to recognize and describe the law of surface subsidence when overlying strata are reclaimed. The DInSAR technique was validated by using the GPS observations obtained synchronously at the corner reflector above the working face. The results show that the X-band SAR data can accurately monitor the small deformation, so as to ensure the monitoring of mining subsidence range and the reliability of the extraction of the angular parameters .