| The relief of high mountain area surrounded by deep valleys and recently active neotectonic movement resulted in various geological hazards in the westnorth of Hubei province area. References records show that xintan complex landslide brought about directly the economic loss over 8700 thousand yuan to the country and the yanchihe rockfall what happened in tune in 1980, extended 285 men to lose the life. The landslipde geology calamity on may 1 in 2001 on xikou town in wulong country smashed inhabitant s tower of 9 tiers the burial and created 79 men dieth. In the relently twenty years, in pace with the high development of highway and hydroelectric power station, being inevitable decompose to terrain and landforms, decomposed slope s steady and impelled into being and developing of landslip. Thereby giving project security to bring the grave effect, condition the projects rate of aduance, ading the project invests, at the same time also probably creates great wealth loss and the personal safety. Hence, studying about slop stability, how to take precautions against coming into being of landslip, how to queen punish in order to gurrantee doing the slope steading when happened in the landslip, is a work with the significant actual sense.The dissertation was introduct about the total situation of nanlidu landslip on 318 statics nation road in Enshi country, launch stability researching in view of the landslip.Accordring to basic concept and assumes essentially on the basic of Sweden method of slices, be living below the maximum equilibrium state, the function expression about stability safety homogeneous slop is deduced, and the slope surface is consist of two lines and an arc, afterwards according to analysis theory of minimal value ruling on the basic of the maximum, genetic algorithm is applied to slove the dangerousest slide situation and radius and corresponding safely factor.A combined neural network and genetic algorithm with solving stability safety of homogeneous slope was proposed and the finite element method is applied to analysis the progressive failure process of the slope and the maximum equilibriumtheory, requests out stability safety of homogeneous slope with the smooth arc radius of difference with the difference below the level coordinate of arc peak, utilizing the neural network algorithm to establish slidng the nonlinear mapping relationship between level coordinate of arc radious and arc peak, being adapted the neural network algorithm to look for along the minimal stability safety of homogeneous slope and corresponding arc radious and arc peak . The algorithm is applicable to form shape on whatever slope, and not all the character awaits the complex landslip part of the stability analysis along the slope, this, is worthy of the project and the actual problem.First of progressive failure process of the slope through part failure, afterwards touch the extension one by one, finally come into being extensive danagerous the advancing gradually process. Be living in this process, happening stress sets free and transfer and subdivision fibaric. The original adports to progressive failure process of the slope to imitate this process, and laying equal stress on a little to research the stability of the progressive failure process of the slope on nanlidu. Analysis makes known, what it is along the progressive failure process of the slop that be able to more reasonably make known steady along slope actual situation, utilize contact friction spring element. The calculated results show that the stability safety factor calculated by considering progressive failure is less than that obtained by common theory, and the effect of material characteristics on the slope stability that considered progressive failure is obvious.By a combined genetic algorithm and neural network and progressive failure, and finite element method, launch to study of numerical solution about slope stability analysis, take precautions against happening of lamdslide as to how, how queen punishes in order to gurrantee...
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