基于单轨道InSAR的矿区地表三维形变监测研究

3D Surface Deformation Monitoring of Mining Area Based on Single-Track InSAR

【目的】基于单轨道InSAR进行长时序地表三维形变监测,解决时空失相干问题,分析总结研究区域的沉降规律。【方法】采用时序D-InSAR和概率积分模型融合方法对红庆河煤矿的长时序地表形变进行监测,获取地表三维形变进行分析。【结果】融合方法解算的三维形变与实测数据较为一致,融合方法垂直向、东西向及南北向的精度分别为0.100 m、0.018 m、0.025 m。【结论】大梯度形变引起的失相干引起问题得到解决,融合方法对三维形变的监测精度均有提高;红庆河煤矿沉降影响范围沿工作面开采方向减小;东西、南北向形变在工作面呈对称分布。

[Purposes]Based on single orbit InSAR for long-term three-dimensional deformation monitoring of the surface,the problem of spatiotemporal incoherence is solved,and the settlement laws of the research area are analyzed and summarized.[Methods]The fusion method of time series D-InSAR and probability integral model is used to monitor and analyze the long-term surface deformation of Hongqinghe Coal Mine,and the three-dimensional deformation in vertical,is obtained.[Findings]The threedimensional surface deformation for analysis calculated by the fusion method was consistent with the measured data.The vertical,east-west and north-south accuracy of the fusion results are 0.100 m,0.018 m and 0.025 m,respectively.[Conclusions]The influence range of subsidence in Hongqinghe Coal Mine gradually decreases along the mining direction of working face.The east-west and north-south deformations are symmetrically distributed in the initial part of the working face.