Study On Fu Yang Lai Long Mountain Landslide Treatment

After earthquake and volcano, Landslide is the third natural disaster that greatly threat the construction work as well as human life and propriety . Because of the high-speed development of the economy and the increasing frequency of the construction work, the problem of landslide becomes more and more obvious in China where the landside is widely distributed almost all over the provinces. As a result, in order to prevent and reduce this disaster, the subject of landslide treatment becomes a researching hotspot in the academia and the engineering fields both at home and abroad.Based on the over-three-year landslide monitoring, this thesis set the landslide treatment in Mont Lailong of Fuyang as the research background, and gives a thorough and synthetical study and analysis on it.Firstly, it introduces the general situation of the landslide treatment in Mont Lailong, including the geologic conditions, climatic & hydrological conditions, and the different measures taken in the landslide treatment in District D and District B respectively. It discusses the basic features of landslide disasters in these two districts, gives a primary judgment and analysis on the landslide stabilizations before and after treatment basing on the monitoring results, and elementarily shows the effect of landslide treatment.Secondly, this thesis introduces the studying development and current situation of stabilization analysis on the pile-soil interaction; it calculates and analyzes the stabilizations of Mont Lailong before and after treatment under different conditions, on the base of the process of the whole calculation on the stabilization analysis. The calculation results further proves that the treatment is fruitful.Thirdly, regarding the main anti-slide pile project in the landside treatment, the thesis discusses the theory of designing and calculating the internal force of anti-slide pile, and derives the power progression solutions on the base of Euler-Bernoulli beam theoty and Timoshenko beam theory, and verifies the correctness of the analytical deduction through classic cases. In the process of analytical deduction, the thesis considers the delamination of soil and different boundary conditions, and studies the different calculation results by the two calculating theories. Compared the calculation of the internal force of anti-slide pile with the on-the-spot monitoring results, it judges the stabilization of the pile .Finally, based on the all dated GM(1,1) model of grey system, different modified models are set up in their given order through out the course of metabolism, residual error modified of different rank, and weighted modified. In setting up the model, unequal intervals in the data of the actual measure are considered, and equal intervalsof grey system forecasting model is extended to unequal ones. Combining the monitoring information of the landslide treatment in Mont Lailong, this thesis forecasts and analyzes the displacement in sliding zones which experience typically sliding stages in District B and D after the landslide has been tackled in a comprehensive way. The result of model presision test shows that the residual error of two rank and weighted modified GM(1,1) model can greatly improve the forecasting precision and adjustability. The forecast result indicates the stabilization of the sliding zone and shows in one aspect the treatment effect.