The Research Of Shiyan-Tianshui Highway’s Huangjiapo Landslide And Anti-Slide Pile’s Failure Prediction

At present, the landslide, volcanoes, earthquakes has been called the three majorgeological disasters in the world.When the landslide happened, it often can buried roads,interrupt the traffic, jam or change the channel of the river, which not only threat to people’slife and property security, and also affect the stability and development of society.Anti-slide pile is the most commonly used for treating the landslide disaster, also is oneof the most effective engineering measures. But in recent years, because of the anti-slide pileconstruction quality and the influence by the project, the effects of the anti-slide pile failurefrequently. The failure not only influenced the stability of landslide, but also harm to thesafety of building in near. This paper mainly studies on the occurrence mechanism and theinfluence factors of landslide disaster, and the performance of anti-slide pile and its failuremode, finally, it combined with the practical engineering, and established a prediction methodof anti-slide pile failure.In this paper, the main work contents as follows:1. Summing up the happened mechanism, the influencing factors and the prevention andcontrol measures of the landslide;2. Analysis of landslide thrust calculation, the anti-slide pile work performance, thecommon internal force calculation method and the discrimination for the rigid pile and elasticpile methods;3. This failure mode of anti-slide pile type: cut or broken, dumping or down, the slidingextrusion and the top. It discussed the anti-slide pile prediction theory research, and it buildcorresponding common prediction model based on the research: and then it determined theprediction model (linear model), statistics forecasting model, gray model, artificialintelligence model and so on.4. According to consult a large number of documents, this paper analyzes the role ofthrust in landslide anti-slide pile, and determines the displacement of the pile headmathematical expression. With the unit logistic regression model, determine the failureprediction anti-slide pile critical value, and set up a corresponding critical value interval, anddefinite the prediction levels.5. Using the finite element analysis software Midas-GTS to analysis the stability of thepractical engineering, and calculate the anti-slide piles displacement. Then it used the criticalvalue of prediction, and determined the HuangJiaPo landslide forecast range anti-slide pileinterval finally. At last, it hopes this interval dividing could help for the future prediction.