| Many research results show, the slope displacement have timeliness,its deformation are constantly developing growth of time. Deformation of the slope from the beginning to the final destruction of go through a period of time as short as a few months, as long as years or even decades.In this paper, soil creep theory combined with a certain slope of the Ganzhou-Longyan Railway to study the characteristics of the displacement limitation, and slope stability to make a reasonable evaluation.According to the measured slant-hole horizontal displacement monitoring data can be seen showing the attenuation creep characteristics, this paper selected the three-parameter rheological model and artificial neural network-Genetic algorithm inversion of rheological parameters.Slope instability criterion to calculate the slope to consider in this article the rheological and safety factor does not consider the rheological stability of the slope analysis.In this paper, the research results are summarized as follows:(1)Three-parameter creep model (H-K model) model parameters is less clear physical meaning and can describe the attenuation creep characteristics of the soil.Projects chosen slope horizontal displacement showing attenuation of the creep characteristics change over time, using H-K model for numerical analysis(2)Using artificial neural network-Genetic algorithm inversion of the rheological parameters of the H-K model.Re-use the numerical inversion of the rheological parameters calculated from the calculated displacement values, compared with the measured values, calculation results show that the displacement of the initial increase rapidly, then gradually stabilized.(3)Consider soil rheological properties of strength reduction, displacement mutation criteria to analyze the stability of the slope of this article, the analysis shows that the safety factor to show a decay trend, the decay is faster at the beginning, after the decay rate gradually slows down,last stabilized. |
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