Numerical Analysis About The Influence Of Slope Morphology And Stratum Occurrence On The Stability Of Anti-inclined Slope

Anti-inclined slope refers to the trend of the slope and the trend of rock nearly parallel, while the inclination.is opposite.The structure form of anti-inclined slope determines it relative stability,therefore,compared with consequent slope,it’s theoretical research is relatively less. Along with the increase in mountainous highway construction projects, the tendency of the slope deformation and instability caused by engineering diseases even catastrophic events are also common occurance. Therefore, this article focused on slope stability for slope and strata occurrence problem research has a practical engineering significance.Firstly,paper discusses the natural elements which influence the stability of Anti-inclined slope, emphatically demonstrates the form of slope and strata attitude affect its stability. Secondly, on the basis of single factor variable principle, to develop a high strata dip Angle, slope Angle, slope of countertendency slope stability influence analysis of the scheme. Adopting finite element numerical analysis method, based on the theory of the strength reduction to Phase2 finite element analysis software for computing platform, for multiple numerical model to calculate; Finally, based on the numerical simulation results of the strength reserve safety coefficient, maximum shear strain, such as horizontal displacement diagram analysis, summarizes its safety coefficient with the strata dip angle, slope angle, slope height elements such as changing law is as follows:(1) Strata dip angle and strength reserve safety coefficient approximate relationship as four function curve, can be divided into four stages: the strength reserve safety coefficient of flating period. falling period,the lowest period,. rising period.(2) The safety coefficient decreases with the increase of slope angle, and the two linear negative correlation.(3) The safety coefficient decreased with increasing of the high slope, when the slope height< 50 m, slope height changes impact on the safety coefficient is larger; the slope height> 50 m, changing the slope height has less affect on safety factor.(4) Comprehensive analysis of strata dip Angle, slope Angle, slope height change on the influence of safety factor sensitivity, the strata dip angle in the interval(0°,25°)(65°, 85°), slope height changes greater impact on the safety factor, followed by slope angle, strata dip angle; intervals(35°, 55°), the change in slope angle of greater impact on the safety factor, followed by slope height;strata dip angle.