Study On The Long-term Safety And Stability Of The High Embankment Slope Of Large

The geological disasters such as landslides,land subsidence,ground fissures and other geological disasters cause huge economic losses and casualties every year in China.High fill slope instability is an important factor causing geological disaster,so the high fill slope settlement deformation regularity and stability is very necessary to study.This paper studies the slope consolidation settlement rules and slope under different rainfall condition,the deformation regularity of permeability principle based on three dimensional Biot consolidation theory and the rainfall infiltration.And the sensitivity of the influence factors of slope stability was analyzed by range analysis method.Finally to Chongqing Yudong a high fill slope as an example,using Midas GTS software and ANSYS software simulation analysis,the simulation results and the actual monitoring data is generally consistent with that in this paper,the high embankment slope of the long-term safety and stability of the method is effective.The main research work is as follows:(1)Three dimensional Biot consolidation theory is introduced in this paper,basic theory of rainfall infiltration,of high fill slope instability and failure form,influence factors and the stability of carries on the induction and the summary,through to the domestic and foreign scholars on the stability of the high embankment slope research status analysis,found that high fill side slope stability research methods mostly without considering the effect of rainfall.(2)Based on the basic principle of the Biot consolidation theory and strength reduction method of high fill slope consolidation settlement under the rule and the condition of different rainfall slope settlement deformation law,and for safety and stability analysis.(3)Using orthogonal experiment,the long-term safety of the high embankment slope stability influence factor sensitivity analysis,draw the density changes on the safety factor of the greatest impact,friction angle of impact times and cohesion are less than that of the inner friction angle,the effect of variation of the elastic modulus on the factor of safety of minimum conclusion.(4)Will finite element data and the high embankment slope of measured data carries on the contrast analysis,on the slope of the late settlement forecast and put forward reasonable suggestions for engineering.