巨野矿区Sentinel-1A雷达影像PS-InSAR地面形变监测

Surface deformation monitoring of PS-InSAR in Juye mining based on Sentinel-1A radar images

以巨野矿区为实验区,利用2015年7月至2016年12月获取的Sentinel-1A卫星IW模式影像,采用基于地面稳定散射特性的永久散射体干涉测量技术(PS-InSAR)对原始合成孔径雷达图像进行处理,获取了地面形变信息,揭示了巨野矿区地面沉降的空间分布特征,根据InSAR解译结果开展地面沉降调查,并结合矿区的地质构造、地下水以等基础地质资料初步分析了重点形变区时序形变特征和成因。实验结果表明巨野矿区内分布着六处较为明显的矿区形变,分别为鄆城矿、郭屯矿、彭庄矿、梁宝寺矿、赵楼矿和龙固矿,矿区形变范围与矿区实际的空间分布一致,其中鄆城矿区形变影响范围最广,沉降中心区形变速率达到-120mm/y,其他五个矿区均存在不同程度的形变现象,随着时间的增加,两个典型沉降区沉降量也在逐渐增大,在监测时间内呈现高度的线性形变趋势。

Using Juye Mining Area as an experimental area,and using the IW mode image of the Sentinel-1A satellite obtained from July 2015 to December 2016,the permanent scattering interferometry technique based on ground stable scattering characteristics was used for processing to obtain ground deformation information.The characteristics and causes of the time-series deformation in key deformation zones are neuealed.The experimental results show that there are six more obvious deformations in the Juye mining area,namely Yancheng Mine,Guotun Mine,Pengzhuang Mine,Liangbaosi Mine,Zhaolou Mine and Longgu Mine,and the deformation range of mining area is consistent with the actual spatial distriblotion of the mining area.The deformation in the Tancheng Mining Area has the widest range of deformation.The deformation rate in the subsidence center area reaches-120 mm/y.There are deformation phenomena in the other five mining areas.With the increase of time,the set!lement of two typical settlement areas is also gradually increasing,showing a high linear deformation trend in monitoring time.