老采空区地基稳定性是废弃塌陷地再利用的关键,需要大量的实测数据进行分析评估,而传统的监测方法虽然精度高,但难以获取历史及广域沉降数据。针对这一问题,以陕西某矿老采空区地表沉降监测为研究对象,使用合成孔径雷达干涉测量技术(InSAR)对该矿区19景Terra SAR影像进行处理与分析,获得了该矿老采空区地表沉降数据。分析了其变形规律,建立了地表残余下沉速度循环峰值与采厚、下沉速度循环周期与深厚比和工作面推进速度、工作面累积下沉与停采时间的经验关系式,为预测和评价老采空区残余形变提供了基础。 The foundation stability of old goaf is the key to reuse and reuse of abandoned collapse. It needs a large amount of measured data for analysis and evaluation. However, the traditional monitoring method is difficult to obtain historical and wide-area sedimentation data though its accuracy is high. In response to this problem, the surface subsidence monitoring in an old goaf in a mine in Shaanxi Province was taken as the research object. The 19 images of Terra SAR in this mine were processed and analyzed by using synthetic aperture radar interferometry (InSAR) District surface subsidence data. The law of deformation was analyzed and the empirical relationship between the peak value and the thickness of the surface residual sinking velocity cycle, the cycle and depth ratio of the sinking speed, the advancing speed of the working face and the accumulated subsidence and stoppage time of the working face were established. Evaluation of the old goaf residual deformation provides the basis.