论文部分内容阅读
以山东省龙口市矿区为研究区,选取2007年7月至10月的3景L波段的ALOS PALSAR数据,采用“二轨法”D-InSAR技术提取了研究区的沉降空间分布、地面沉降量、沉降面积、动态下沉曲线以及下沉速率等值线,分析了两个监测时段龙口矿区的塌陷状况及地表形变规律。结果表明:(1)沉降区域主要集中在研究区的西部、北部矿区,坐落于北皂前村、北皂后村和兴隆庄村;(2)2007年7月10日至2007年8月25日时段内累积最大沉降量22 mm,沉降总面积约为0.21 km~2,平均沉降速率为0.32 mm d~(-1),北皂前村附近的矿区沉降剖面下切最深,该时段的沉陷形变不活跃;(3)相比上一监测期,2007年8月25日至2007年10月10日时段内,最大沉降量减少为11 mm,沉降总面积增大为1.2 km~2,平均沉降速率减少为0.11mm d~(-1),说明沉降深度减少,但沉降范围增大,沉陷形变趋缓。本研究可为矿区周边建筑物、道路等基础设施建设、耕地重建提供参考。
Taking the Longkou mining area of Shandong Province as the research area, three L-band ALOS PALSAR data from July to October 2007 were selected and the spatial distribution of the settlement in the study area was extracted by using the “two-track method” and “D-InSAR” Settlement, settlement area, dynamic subsidence curve and sinking rate contour, the collapse status and surface deformation of Longkou mining area in two monitoring periods were analyzed. The results show that: (1) The subsidence areas are mainly concentrated in the western and northern mining areas of the study area, located in Beizaoqian Village, Beizaohou Village and Xinglongzhuang Village; (2) From July 10, 2007 to August 25, 2007 During the period, the maximum settlement is 22 mm, the total area of sedimentation is about 0.21 km ~ 2 and the average sedimentation rate is 0.32 mm d ~ (-1). The subsidence of the mining area near Beizaoqian Village is the deepest. (3) Compared with the previous monitoring period, the maximum settlement decreased to 11 mm from August 25, 2007 to October 10, 2007, the total area of settlement increased to 1.2 km ~ 2, and the average sedimentation rate Decrease to 0.11mm d ~ (-1), indicating that the settlement depth decreases, but the settlement area increases and the subsidence deformation slows down. This study can provide references for the construction of infrastructures, roads and other infrastructure around the mining area and the reconstruction of arable land.