Study On Stability Analysis Of Slope Under Multi-Functions Influence And Soluted Method

Slope sliding is an important branch on geologic disaster and can become a key basilic discussed problem in geotechnical engineering.There are many factors to effect the slope stability related to mining engineering,expressway and bridge engineering, water conservancy and structure engineering,et al.Slope engineering is studied by various subjects and theory,so it is inevitable to be difficult and complicated field. At present,such is the fact that slope engineering practice is forward to theory research, including calcuted methods and mechanical knowledge. It is an flinty challenge that new solution and innovated theory can be obtained and applied in slope engineering construction.This paper attempts to study slope engineering with rheological mechanics, seepage mechanics,chemical action of soil-water, numerial analysis and engineering mechanics,and so on. Thereinto,finite difficult method software(FLAC3D) is applied to analyze practice instance.The main research contents are as follows:Based on character on slope deformation procession and Mohr-Coulomb yield rule for extension and shear yield,a new rheological model is established,named accelerated shear component,which is operated to modify classical and linear Xiyuan rheological model.It is ascendant to the creep model that can show non-linear and three typical phase on rheological deformation to geotechnical engineering destroy. Simultaneously, the two non-linear formula on viscosity coefficient for soil is established,which can be ascertained by integral calculation and it is very complicated formula for non-linear relation on many variable factors including stress,cohesion intensity,inner friction angle, creep time and modulus.Slope stability is further affected on anti-shear strength.In this paper,the experience formula for longe term strength on clay is provided for analyzed slope numerical calculation, which can mainly show power function relation of cohesion intensity between time and experience constant.Numerical calculation is often used to research geotechnical engineering,and slope stability can be accurately judged including stress,strain,deformation,safety factor, various plastic region, structure element variable et al and it can also predict many case.Taking for foundation pit with anchor support instance, slope stabitity analysis can be operated by shear strength reduction technique on cohesion intensity and inner friction angle and calculated termination criterion on deformation break of characteristic points in slope soil including vertical displacement and horizontal displacement.Based on secondary exploitation technique for FLAC3D,which is founded in Americal to mainly calculate tunnel,slope,foundation pit,soft groundwork disposed and dam and so on.Lastly,the creep deformation can be obtained by FLAC3D to validate the reliability feasibility and applicability accoring to measurement data comparison on spot.It is well known that limit equilibrium method is typical calculation on slope stability.In this paper, according to homogeneous,continuous and isotropy character on soil strcture,the safety factor formula can be achieved to solute foundation pit support with limited equilibrium method.The function on differential coefficient function between safety factor and installed anchor angle is obtained. According to the new rheological model, the minimum anchored load can be also obtained.The theory of saturated,unsaturated seepage and fluid-solid coupling of porous media and its differential equation are introduced.The soil-water characteristic curve resolution of porous degree and capillary stress and height of capillary water and penetrability coefficient are obtained.The numerical seepage analysis on soil slope is performed under the condition of rain infiltration to analyze slope deformation which can direct soil slope stability.Based on consolidation theory on Terzaghi under vertical orientation,the differential coefficient equation is built on soil consolidation and rheology according to modified xiyuan model,which many parameters is calculated including penetration coefficient,fluid weight,time, hole water compressive stress and viscosity time gene newly founded.And anti-shear strength equation is modified with the domino offect on conslidation and rheology for effective stress,which is one of rules for soil field destroy under Terzaghi theory.The academic evidence can serve as slope stability on consolidation,fulid-solid coupling,consolidation and rheology.The water-soil chemical interaction is a very important effect on soil shear strength. Based on ion effect and the porpose of improved soft roadbed soil, samplings of soil,ground water and clays are abtained to observe and analyze the effect. The analysis on mechanics of water-soil interaction is carried out in order to find factors of shear strength, including mechanics effect of water chemical, analysis test on water chemical,linear correlation regress and effect of loadbed soil improvment. The results show the weakened effect occurs on soil cohesion and inner friction angle with Ca2+,HCO3-,K+ and Na+ ion consistency. But dispersed inner friction angle character is marked with ion consistency. Simultaneously, the correlation is found among cohesion and testing index including total salinity,hardness, K+, Na+, Ca2+ and HCO3-.Lastly, it is also found that the effect is remarkable with clays when the consistency was close to 10 percent.Generally, the failure of tension and shear is presented in slope soil. Based on index of resisted shear:c andφ, elasto-plastic theory and finite element method are applied in calculation and numerical model of slope stability is established and characteristic of strength exertion factor can be combined, which verdict the programe convergence that the calculation procedure executed on the dissimilar SEF. It is presented that steady safety factor of holistic soil slope and latent failure region and extent of strength exertion on soil failure and so on.According to slope stability analysis with limit equilibrium method theory and character of energy dissipation on slope sliding mass along latent sliding curve,the stability analysis on homogeneous and mulitilayer soil slope was calculated in order to take on energy dissipation advantage based on limit equilibrium method than other calculated methods,including limit analysis,numerical modeling method, intelligence method and engineering analogy method.Taking the action of new formula transform on coordinate curve integral,the safety factor function equation was built based on modified limited equilibrium method with energy dissipation on friction resistance to solute extremum along sliding curve,and the curve function differential equation was also abtained by limited safety factor value on differential coefficient of the slope safety factor equation.The slope examples on 2D strain were cited to validate the above differential coefficient equation for engineering application and theory study.The WJED program with VC++on calculated safety factor and researched sliding curve function equation was firstly applied to evaluate stability for homogeneous and mulitilayer soil slopes.The results show the parse formula for latent sliding curve accords with exponential equation for energy dissipation and accords with circle equation for Bishop method one of limit methods. Simultaneously,both the safety factor amount and sliding location are between Bishop method and finite difference method,The directed application on slope reinforcement engineering is obvious and after comparement analysis limited equilibrium analysis on slope stability is subjoined by energy dissipation method.