济宁地区高速公路沉降监测与分析

Monitoring and analysis of highway subsidence in Jining

针对煤炭开采导致地面沉降比较严重的问题,以济宁地区为研究区,利用2008年1月至2010年2月共6景ALOS PALSAR数据,开展高速公路沉降监测与分析。通过双轨D-InSAR进行差分干涉处理,提取了地面形变图。研究发现,挖掘煤炭、开采地下水等人为因素造成的地表沉降明显,年均沉降量达55mm;高速公路沉降程度较轻,年均沉降量为4.7mm;还发现,矿区开采等人为因素会对高速公路产生影响,不同的地质条件也会导致高速公路发生不同程度的沉降。

Aiming at the problem that the surface subsidence in coal mining area is serious,taking Jining as the test areawhere,the paper studies its monitoring of highway subsidence,used two-pass D-InSAR technique to obtained the surface subsidence based on six images of ALOS PALSAR between January 2008 and February 2010.With the analytical and experimental investigations,it is found that the surface subsidence caused by mining coal and exploitation of groundwater is obvious,and the annual average rate of subsidence is 55 mm.While the settlement of highway is light,and the annual average rate of subsidence is 4.7 mm.The conclusion is that the coal mining may has an impact on the highway and different geological conditions will lead to different degrees of subsidence of the highway.