Study on Spatio-Temporal Evolution Analysis Method of Surface Deformation in Mining Area
Because the discrete point data obtained by traditional monitoring methods can only describe the spatial deformation state at a specific time,it can not reflect the overall spatio-temporal evolution of surface deformation in the mining area.This paper intro-duces a method for constructing a spatio-temporal model of surface deformation in mining areas.By introducing a temporal term into the spatial polynomial,the spatio-temporal polynomial is transformed into a spatio-temporal polynomial.Based on the moving least squares method,the local characteristics are taken into account,the spatio-temporal polynomial and the moving least squares method are combined to complete the model fitting.The experimental analysis shows that the model with appropriate orders of spatio-temporal term has good fitting accuracy,and realizes the fitting of the spatio-temporal trend of surface deformation in mining area,which can directly reflect the overall spatio-temporal evolution trend and law of surface deformation in mining area.
surface deformationspatio-temporal modelmoving least squares methodpolynomialspatio-temporal evolution
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