Monitoring and inversion on land subsidence over mining area with InSAR technique

The Wulanmulun town, located in Inner Mongolia, is one of the main mining areas of Shendong Company such as Shangwan coal mine and Bulianta coal mine, which has been suffering serious mine collapse with the underground mine withdrawal. We use ALOS/PALSAR data to extract land deformation under these regions, in which Small Baseline Subsets (SBAS) method was applied. Then we compared InSAR results with the underground mining activities, and found high correlations between them. Lastly we applied Distributed Dislocation (Okada) model to invert the mine collapse mechanism.

位于内蒙古的乌兰木伦镇是神东公司上湾煤矿和补连塔煤矿等主要矿区之一，随着地下煤矿的开采，这里一直遭受着严重的采空塌陷。我们利用ALOS/PALSAR数据提取这些区域下的地表变形，其中应用了小基线子集（SBAS）方法。然后我们将干涉合成孔径雷达（InSAR）结果与地下采矿活动进行了比较，发现它们之间具有高度相关性。最后我们应用分布式位错（冈田）模型反演了采空塌陷机制。