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Pretreatment Technique of Displacement Monitoring Data for Open Pit in Daye Ironmine

LU Xinhai1, BIAN Fuling2 (1. School of Environmental and Civil Engineering, Wuhan 430073, China; 2. Research Centre of Spatial Information & Digital Engineering, Wuhan University, Wuhan 430079, China)  
For the displacement monitoring data which is the basis for early-warning and decision-making, there are some problems such as non-uniform period observation, data missing and error rejecting. In this paper, the methods of cubic spline and regression analysis are applied to pretreat the observation data. The results can provide scientific base data for pridiction criterion.
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