【摘要】 金川龙首矿露天矿坑经历了露天开采和地下开采两种开采活动的影响，地表岩体变形破坏严重。融合时序InSAR数据与GPS数据，对该矿露天坑三维变形规律进行了研究。首先，基于小基线集技术（SABS-InSAR），利用10景ALOS(PALSAR）影像，采用赫尔默特方差算法建立了SAR数据与GPS数据的融合模型，获得了2009—2011年的三维变形数据；然后利用37景Sentinel数据，并引入基于先验知识的间接求解方法来提高SN向精度，从而获得2015—2016年三维变形数据。研究表明：2009—2011年矿坑EW向变形量达到-219.205～232.965 mm/a,SN向变形量达到-158.566～110.177 mm/a，垂向变形量达到-317.132～82.58 mm/a;2015—2016年矿坑EW向变形量达到-295.511～100.374 mm/a,SN向变形量为-41.429～194.373 mm/a，垂向变形量达到-427.585～64.435 mm/a。通过对比两个时序的形变量得知：矿坑年均变形量有减小趋势，但变形趋势并未有明显变化，仍表现为矿坑上下盘各形成了一个沉降区，在坑底形成一个抬升区。分析结果对于矿坑后续变形监测和稳定性控制有一定的借鉴价值。更多还原

【Abstract】 Due to effects of two mining activities of open mining and underground mining,serious surface deformation occurred in Jinchuan Longshou open-pit mine.The 3D deformation regularity of the open pit of Longshou Mine is studied based on time series InSAR data and GPS monitoring data.Firstly,based on SABS-InSAR technique,with data of 10 image ALOS(PALSAR),the integrated model of SAR monitoring data with GPS was established by the Helmert variance algorithm to obtain 3D deformation data from 2009 to 2011;then,by using of 37 image Sentinel data,an indirect solution based on prior knowledge to improve the north-south accuracy was introduced to obtain the 3D deformation data from 2015 to 2016.The monitoring results show that from 2009 to 2011,the east-west deformation of the open pit of reached-219.205～232.965 mm/a,the north-south deformation reached-158.566～110.177 mm/a,and the vertical deformation reached-317.132～82.58 mm/；from2015 to 2016,the east-west deformation of the open pit reached-295.511～100.374 mm/a,the north-south deformation reached-41.429～194.373 mm/s,and the vertical deformation reached-427.585～64.435 mm/a.Comparing the two time-series deformation information,it is indicated that the annual average deformation of the open pit has a tendency to decrease,and the deformation trend has not changed significantly,which further show that a subsidence zone is formed in the upper and lower plates of the pit,and an uplift is formed at the bottom of the pit.The above study results related to the 3D deformation regularity of the open pit of Longshou Mine can provide reliable reference for the further monitoring and stability controlling of the open pit.更多还原