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为了解决D-InSAR技术不能全面监测煤矿开采引起的地表移动与变形问题,综合运用理论推导和模拟实验方法,开展基于单视线向D-InSAR技术提取开采沉陷移动与变形的方法研究,主要取得如下成果:(1)融合近水平、缓倾斜煤层开采沉陷规律和D-InSAR技术,建立任意像元任意方向下沉、倾斜、水平移动、水平变形和曲率变形的计算模型及其推广模型。模拟实验结果表明,在模拟地质采矿条件和影像分辨率10 m条件下,任意像元移动变形模型提取精度为:(1)SN,EW向倾斜计算误差分别为±0.03和±0.02 mm/m;(2)SN,EW向水平移动计算误差分别为±1.6和±1.3 mm;(3)SN,EW向水平变形计算误差分别为±0.04和±0.03 mm/m;(4)SN,EW向曲率计算误差分别为±0.001和±0.001 mm/m~2。模型精度满足矿山开采沉陷监测要求。(2)利用构建的基于单视线向D-InSAR技术提取开采沉陷移动与变形方法,提取了20120105~20120116期间,南屯煤矿9310工作面开采引起的SN,EW向采动地表移动与变形。研究成果对矿山开采沉陷D-InSAR监测具有重要参考价值。
In order to solve the problem that D-InSAR technology can not comprehensively monitor the surface movement and deformation caused by coal mining, comprehensively using theoretical derivation and simulation experiment methods, the research on extracting and controlling subsidence movement and deformation based on D-InSAR technique is carried out. Results: (1) Computation of subsidence law and D-InSAR technique in near horizontal and gently inclined coal seam, the calculation model and its generalization model of arbitrary pixel subsidence, tilt, horizontal movement, horizontal deformation and curvature deformation are established. The simulation results show that the precision of the displacement deformation model of any pixel under the condition of 10 m simulated geologic mining conditions and image resolution is as follows: (1) The errors of slope calculation of SN and EW are ± 0.03 and ± 0.02 mm / m, respectively; (2) The calculated errors of horizontal movement of SN and EW are ± 1.6 and ± 1.3 mm, respectively; (3) The errors of horizontal deformation of SN and EW are ± 0.04 and ± 0.03 mm / m, respectively; The calculated errors are ± 0.001 and ± 0.001 mm / m ~ 2, respectively. Model accuracy to meet the mining subsidence monitoring requirements. (2) The extracted subsidence movement and deformation method based on D-InSAR technology based on single line of sight was extracted, and the surface movement and deformation of SN and EW mining induced by the mining of 9310 working face in Nantun Coal Mine from 20120105 to 20120116 were extracted. The research results have important reference value for D-InSAR monitoring of mining subsidence.