Forecast Model of Phreatic Surface on Tailings Dam Based on GM-GRNN Theory

Abstract:

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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.

Info:

Periodical:

Edited by:

Ran Chen

Pages:

3403-3407

DOI:

10.4028/www.scientific.net/AMM.44-47.3403

Citation:

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

Online since:

December 2010

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$35.00

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