Fit the surface subsidence curve of incline main section of the subsidence basin

It is important content to study of the subsidence on the incline-section of the basin of the surface subsidence. The traditional function model of the main section plane subsidence has some weak points that the mathematical formula is too complex and the parameter and the origin of coordinate are not easy to obtain. Surveyed the feature of the curve of the subsidence on incline-section of the basin, a new function model which can fit well the curve of the main section subsidence of the subsidence basin has been made out in term of the observation data. This new model has some merit that the mathematical formula is simple and the parameter is also easy to obtain in practical research work compared to other subsidence prediction models. The observation data of the main section subsidence of a certain mine is accordance with the model. It is proved that this new model is fit well the curve and it can be used to predicted the subsidence of the surface above rectangle goaf due to mining underground.