Forecast Model of Phreatic Surface on Tailings Dam Based on GM-GRNN Theory
Due to the extremely complicated seepage boundary conditions of tailing dam, the calculation results adopting two-dimensional simplified theory may greatly different from the measured results. It is urgent need of an accurate calculation method to forecast phreatic surface. In-depth analysis of factors affecting tailings dam phreatic surface, phreatic surface prediction model based on GRNN and GM (1,1) was established. A tailing dam engineering is tested using this model. It shows that the model uses the advantages of "accumulative generation" of a Gray prediction method, which weakens the original sequence of random disturbance factors, and increases the regularity of data. It also makes full advantage of the GRNN approximation performance, which has a fast solving speed, describes the nonlinear relationship easily, and avoids the defects of Gray theory.
F. Y. Wang et al., "Forecast Model of Phreatic Surface on Tailings Dam Based on GM-GRNN Theory", Applied Mechanics and Materials, Vols. 44-47, pp. 3403-3407, 2011