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地下开采导致的地表形变失相干是InSAR技术在矿区开采沉陷监测中面临的主要问题。本文分析了In-SAR技术用于矿区开采形变监测的适用性和最大可探测形变梯度问题,并以陕西彬县彬长矿区为研究对象,采用PALSAR数据进行矿区开采沉陷探测实验研究,研究结果表明:PALSAR数据因其波长较长的特点,具有相对较大的监测梯度,在一定程度上能够克服矿区形变量超出最大监测梯度所造成的失相干现象。
Underground deformation caused by surface deformation phase out of InSAR technology in mining mining subsidence monitoring the main problems. In this paper, the applicability of In-SAR technology for deformation monitoring in mining area and the maximum detectable deformation gradient are analyzed. Taking Pangchang mining area in Binxian, Shaanxi as an example, the PALSAR data are used to study the mining subsidence detection. The results show that : PALSAR data, due to its longer wavelength, has a relatively large monitoring gradient and can overcome the phase-out phenomenon caused by the deformation of the mine area exceeding the maximum monitoring gradient to a certain extent.