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Caused by mining rock and surface deformation of mining roads, buildings , bridges, etc. , so that the deformation and failure occurs , the deformation of the rock and surface coal mining numerical simulation to determine the equation of the deformation function has great theoretical and practical significance . The Shandong Mine coal mining strata and surface deformation numerical simulation . Formation mechanical parameters of coal mine geological conditions , a reasonable choice , the only mining 33 01 face and 33 on the 01 face , 33 under 01 face joint mining of overburden rock damage FALC3D software simulation to determine the height of the caving zone and flowing fractured zone height . Three - mining area of the mine on the layer thickness of the coal and coal under 7m-19.5m, selected 7m 14m, 19.5m three scenarios for the simulation, the calculated layer thickness caving zone , Fractured Full height . Numerical simulation data and compared with dual -side water shutoff measured data . Numerical simulation of surface deformation are calculated using only 33 of the 01 face and 33 on the 01 face , 33 under 01 face joint exploitation of the deformation of the surface and the middle strata , SURFER software calculation results post-processing , draw a three-dimensional map Vector , deformation contour map . And numerical simulation data were compared with the measured data of the GPS-RTK . In this paper, MATLAB software fitting regression deformation data to study the surface and internal rock deformation law . Subsidence value selection quadratic polynomial , cubic polynomial , sine function , and four polynomial function fitting and variance of the coefficient of determination , corrected coefficient of determination , root mean square error of four standard to evaluate the effect of the functional equation simulation data fitting , and ultimately determine the subsidence best-fit function equation quartic polynomial function equation . Similarly , to determine the best-fit function equation of the surface horizontal movement sine function equation , the the internal rock subsidence best fit function equation for a quintic polynomial function equation , internal strata sink basin boundary contemplated aggregate function equation cubic polynomial equation fitting function equation monotonicity , convexity and concavity analysis .
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