Couple Analysis Of Slice Method And Finite Element Method For Slope Stability

The threat of natural disaster to mankind has already aroused great concern from whole world, landslide disaster influence human survival hugely and become already one of three major calamities as earthquake disaster, volcano calamity.Landslide question is a pieces of old problem that the classical soil mechanics attempts to solve first, but not solved satisfactorily yet so far. Landslide calamity often takes place in the process of construction of water conservancy and power project, railway highway project, port room build project, mine engineering in our country and brings enormous loss to national economic construction; so how to reduce landslide disaster becomes a primary subject of the research in the slope project. It is the key to reduce natural disasters successfully that appraises the slope stability correctly, and the correct appraisal result depends on the correct appraisal method; so. the research of the slope stability analytical method is a very important content in the slope research.Up until now, the limit equilibrium slice method for slope analysis is used widely in domestic and international yet. Its mechanics model is simple, has already accumulated very abundant practical experience. My paper uses the safety coefficient as the starting point and announces the difference of computing technology; reveals the essence and defect of the limit equilibrium slice methods. On this basis of the limit equilibrium slice methods, this paper proposes LE-FEM method and sets up the appraisement system on the slope stability. LE-FEM method inherits the advantage of finite element method and the appraisement index can conform to the traditional safety coefficient appraisement system, which make the result of calculation be able to apply to reality directly.The slope project is a very complicated system. The analytical method of the determinacy is unable to consider the uncertain influence factor, but the influence factor is objective existence, so the dependability analysis of slope stability is very essential. This paper reveals the influence law of unit weight, intensity parameter that accord with the normal distribution condition basing on the Monte Carlo method which makes slope stability analysis rational, accord with the actual conditions further and serve the prevention and reduction of landslide disaster better.