STUDY ON FEASIBILITY OF CORS APPLICATION IN SURFACE MOVEMENT DEFORMATION MONITORING IN MINING AREAS

Debao Yuan, Xueqian Hong, Shiwei Yu, Liangjian Li, Yanbao Zhao

College of Geoscience and Surveying Engineering, CUMT, Beijing, 100083, China

CORS has been widely established in China and abroad, and can be used in geodetic measuring, coordinate system retaining and surveying and mapping of city. However, some issues (stability of base stations, influence of survey precision on horizontal and vertical extension, et al) are still unsolved in Surface Movement Deformation Monitoring in Mining Areas. Based on the CORS, a method and flow for data processing and stability analysis of deformation monitoring network was proposed. Using rank defect free network adjustment, a robust estimation with minimum of first order norm of displacement component was offered to determine displacement of relative stability. The strategy can resolve the confirmation of robust iterative weights and the effects of different reference models. Displacement significance was tested with the normality method. Finally, according to this method , datum of GPS deformation monitoring in Mining Areas in Datong were calculated and preliminarily proved that this method was feasible and effective, providing a new monitoring methodologies terrain monitoring in mining areas.