Simulation Of Slope Stability Analysis By Particle Flow Code

Slope problem has always been a matter of human attention and research,each year due to disasters such as landslides caused great loss to the country and people,slope governance in China has a lot of mature and effective measures,although these measures can reduce the occurrence of disasters,but losses because of landslides is very big still.Frequent geological disasters make people pay more attention to the slope stability study,pay more attention to governance issues of slope,the slope to a great extent,has promoted the research and development.In recent years,with the development of computer technology by leaps and bounds and the evolution of modern numerical analysis theory,opened a new era of using computer numerical simulation,the numerical simulation has been widely used to simulate analysis of landslide caused by geological disasters.In this paper,on the basis of reading a large amount of data and literature,on the basis of predecessors’ research achievements in the field of slope,combining the method of particle flow and loads under the weight of the slope are analyzed in numerical simulation,and analyzes the friction pile slope governance,the role of the soil arch effect is the formation and development process.This paper introduces several kinds of commonly used in limit equilibrium method to calculate the slope stability method,summarizes several methods of assumptions and methods of application condition and advantages and disadvantages in the application in the slope stability.Limit equilibrium is a method of first appeared,the emergence of numerical methods in recent years,the study of slope has entered a new stage,the finite element method and discrete element method numerical methods,such as the real response of soil stress-strain relationship,this is the place where the numerical method is superior to the limit equilibrium method,and does not limit the shape of the slope.Along with the development of computer technology,combined with the mature theory,numerical simulation of era began,and numerical simulation that the researchers can be more intuitive to observe the occurrence and development of landslide evolution process,such as to more accurately get stress strain curve of the slope,slope stability provided the powerful basis for research.This article mainly uses the method of two-dimensional granular flow,the biaxial test of soil specimen simulated,analyzed the granular cell between friction coefficient and friction Angle of material existence,and combined with the mohr-coulomb failure criterion,mesoscopic parameter change on the material,the influence law of macroscopic characteristics,make the mesoscopic parameters can correctly reflect the macroscopic properties of material,and analyzes the phenomenon of the destruction of the biaxial test under different binding model,then using the method of particle flow simulation under the weight of the whole process of deformation and failure of slope,don’t need to assume the position of the critical slip surface and early crack shape,but after the particle unit under external force to movement,where shear strength weak bonding between particles are destroyed and particles separated,form the critical slip surface,mean particle flow method in slope stability study of the feasibility and superiority.After simulation when the upper slope has a load of the slope damage,analyses the load area of the impact on the slope failure.Anti-slide pile more widely applied in the management of slope,the soil arch effect is people study and attention problems,the article particle flow method is used to simulate the process of anti-slide pile middle-earth arch effect,provides a strong basis for the study of soil arching effect.