古交矿区重复采动沉陷规律及沉陷参数分析

Analysis on Subsidence Law and Subsidence Parameters by Repeated Mining in Gujiao Mining Area

为分析古交矿区18207工作面重复采动后的地表各个沉陷参数,将计算机和遥感测量技术(ArcGIS平台量测和DInSAR监测)应用到了地表沉陷监测中。基于ArcGIS平台量测和DInSAR监测结果确定工作面的回采位置和工作面的平均采深并将上述ArcGIS观测结果与DInSAR监测结果汇总,计算得到18207工作面开采沉陷参数:超前影响角62.98°,下山边界角59.33°,走向边界角50.72°,最大下沉值2.602 0,最大下沉速率33.37 mm/d,最大下沉系数0.87,最大水平移动系数0.18.

In order to grasp the surface subsidence data in Gujiao coalfield for further research,one of the working faces in a coalmine with repeated mining experience is selected as the study object. The computer measurement and remote sensing techniques are introduced for the subsidence measuring and monitoring. The mining position and the average mining depth of the working face are ascertained based on the ArcGIS platform and DInSAR monitoring results,the calculated parameters for mining subsidence are as follows： 62. 98° for advance angle of influence,59. 33°for dip boundary angle,50. 72° for strike boundary angle,2. 602 0 for the maximum subsidence,33. 37 mm/d for the maximum subsidence rate,0. 87 for the maximum subsidence coefficient and 0. 18 the maximum horizontal movement coefficient.