基于单视线向D-InSAR技术提取开采沉陷移动与变形方法研究
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摘要
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。
Current D-InSAR technology cannot fully survey the surface movement and deformation caused by the coal mining. To overcome the weakness,a method of extracting the movement and deformation from a single D-InSAR pair based on the integrated means of theoretical derivation and simulation experiments was proposed. A calculation model of the tilt,horizontal movement,curvature and horizontal deformation in any direction for all pixels by combining the subsidence of the horizontal and gently inclined coal seams and D-InSAR technology was established. The errors of tilt calculation in North-south and east-west directions are ±0.03 mm/m and ±0.02 mm/m respectively. The errors of horizontal movement calculation in north-south and east-west directions are ±1.6 mm and ±1.3 mm respectively. The errors of horizontal deformation calculation in north-south and east-west direction are ±0.04 mm/m and ±0.03 mm/m respectively. The errors of curvature deformation calculation in north-south and east-west directions are ±0.001 mm/m~2 and ±0.001 mm/m~2 respectively. During the period of 05-01-2012 to16-01-2012,the surface movement and deformation in north-south and east-west directions caused by the mining at workface 9310 in Nantun coal mine were calculated by using the retrieving model of movement and deformation.
Current D-InSAR technology cannot fully survey the surface movement and deformation caused by the coal mining. To overcome the weakness,a method of extracting the movement and deformation from a single D-InSAR pair based on the integrated means of theoretical derivation and simulation experiments was proposed. A calculation model of the tilt,horizontal movement,curvature and horizontal deformation in any direction for all pixels by combining the subsidence of the horizontal and gently inclined coal seams and D-InSAR technology was established. The errors of tilt calculation in North-south and east-west directions are ±0.03 mm/m and ±0.02 mm/m respectively. The errors of horizontal movement calculation in north-south and east-west directions are ±1.6 mm and ±1.3 mm respectively. The errors of horizontal deformation calculation in north-south and east-west direction are ±0.04 mm/m and ±0.03 mm/m respectively. The errors of curvature deformation calculation in north-south and east-west directions are ±0.001 mm/m~2 and ±0.001 mm/m~2 respectively. During the period of 05-01-2012 to16-01-2012,the surface movement and deformation in north-south and east-west directions caused by the mining at workface 9310 in Nantun coal mine were calculated by using the retrieving model of movement and deformation.
引文
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[3]范洪冬,邓喀中,祝传广,等.基于时序SAR技术的采空区上方高速公路变形监测及预测方法[J].煤炭学报,2012,37(11):1 841–1 846.(FAN Hongdong,DENG Kazhong,ZHU Chuanguang,et al.Deformation monitoring and prediction methods for expressway above goaf based on time series SAR technique[J].China Journal of Coal Society,2012,37(11):1 841–1 846.(in Chinese))
[4]GRAY L.Using multiple RADARSAT In SAR pairs to estimate a full three-dimensional solution for glacial ice movement[J].Geophysical Research Letters,2011,38(5):132–140.
[5]WRIGHT TJ,BARRY EP,LU Z.Toward mapping surface deformationin three dimensions using In SAR[J].Geophysical Research Letters,2004,31:L01607.
[6]HU J,DING X L,LI Z W,et al.Kalman filter based approach for multisensor,multitrack and multitemporal In SAR[J].IEEE Trans Geosci Remote Sens,2013,51(7):4 226–4 239.
[7]FIALKO Y,SANDWELL D,SIMONS M,et al.Three-dimensional deformation caused by the Bam,Iran,earthquake and the origin of shallow slip deficit[J].Nature,2005,435:295–299.
[8]HU J,LI Z W,ZHU J J,et al.Inferring three dimensional surface displacement field by combining SAR interfer ometric phase and amplitude information of ascending and descending orbits[J].Science China Earth Science,2010,53(4):550–560.
[9]JUNG H S,LU Z,WON J S,et al.Mapping three dimensional surface deformation by combining multiple-aperture interferometry and conventional interferometry[J].Application to the June 2007 eruption of Kilauea Volcano,Hawaii.IEEE Geosci Remote Sens Lett,2011,8(1):34–38.
[10]GUDMUNDSSON S,SIGMUNDSSON F,CARSTENSEN J M.Three dimensional surface motion maps estimated from combined interferometric synthetic aperture radar and GPS data[J].Journal of Geophysical Research,2002,107(B10):2 250.
[11]HU J,LI Z W,DING X L,et al.Derivation of 3-D coseismic surface displacement fields for the 2011 Mw 9.0 Tohoku-Oki earthquake from In SAR and GPS measurements[J].Geophysical Journal International,2013,192(2):573–585.
[12]GOURMELEN N,KIM S W,et al.Ice velocity determined using conventional and multiple-aperture In SAR[J].Earth and Planetary Science Letters,2011,307(1/2):156–160.
[13]GUGLIELMINO F,BIGNAMI C,et al.Analysis of satellite and in situ ground deformation data integrated by the SISTEM approach:The April 3,2010 earthquake along the Pernicana fault(Mt.Etna-Italy)case study[J].Earth and Planetary Science Letters,2011,312(3/4):327–336.
[14]LI Z W,YANG Z F,ZHU J J,et al.Retrieving three-dimensional displacement fields of mining areas from a single In SAR pair[J].Journal of Geodesy,2015,89:17–32.
[15]何国清,杨伦,凌赓娣.矿山开采沉陷学[M].徐州:中国矿业大学出版社,1991:167–169.(HE Guoqing,YANG Lun,LING Gengdi.Mining subsidence theory[M].Xuzhou:China University of Mining and Technology Press,1991:167–169.(in Chinese))
[16]杨泽发,易辉伟,朱建军,等.基于In SAR时序形变的矿区全盆地沉降时空演化规律分析[J].中国有色金属学报,2016,26(7):1 515–1 522.(YANG Zefa,YI Huiwei,ZHU Jianjun,et al.Spatio-temporal evolution law analysis of whole mining subsidence basin based on in SAR-derived time-series deformation[J].Transactions of Nonferrous Metals Society of China,2016,26(7):1 515–1 522.(in Chinese))
[17]FAN H D,CHENG D,DENG K Z,et al.Subsidence monitoring using D-In SAR and probability integral prediction modelling in deep mining areas[J].Survey Review,2015,47(345):438–445.