Deformation Analysis Of Toppling Rock Slope Based On Discrete Element Method

With the development of a large number of infrastructure construction at home and abroad,more and more rock slope instability phenomena have been exposed in actual projects.At present,the study of anti dip layered rock slope mainly focuses on the classification of the type of slope and the factors affecting the stability.The slope of the left bank of Ecuador's Delsitanisagua hydropower station has nore obvious toppling deformation during the construction process,which seriously affects the safety of the project.This project is the source of the research background and research ideas,Fiirstly,the failure mode and stability analysis method of anti dip layered rock slope are summarized,and the discrete element method is compared with the method of the block toppling limit equilibrium analysis.Then,based on the orthogonal test theory,the significance of the internal factors of the equal thickness homogeneous anti dip layered rok slope is analyzed,and the sensitivity of the influence factors of the soft and hard interbedded anti dip core is analyzed based on the cloud calculation.Finally,the stability analysis of the actual engineering case is carried out,and the reinforcement method of the prestressed cable is improved,and a reasonable reinfor<cement plan for the slope is put forward.The main research results and conclusions are as follows:(1)The comparison between the discrete element method and the analytical method shows that the discrete element effectively overcomes the limitations of the traditional analytical methods.The.discrete element method is applicable to slope collapse deformation analysis of various types and scales,and the analytical mehod is found Problems that may exist in practical applications.(2)The significance of the factors of slope stability is analyzed by the results of the orthogonal test safety factor,The ranking of the factors of each factor is as follows:slope angle>rock mass mechanics parameter>slope height>rock dip angle.At the same time,it is also found that when the dip angle of slope rock is small,there is possibility of toppling failure.(3)Numerical simulation of cloud computing is performed to verify the feasibility of cloud computing in geotechnical engineering.Through the sensitivity analysis of the core in the slope with large slope angle.The isotropic and homogeneous toppling slopes are often bent,dumped,and collapsed At the same time,it is also found that when slopes of slopes are small,there is also the possibility of dumpimg damage.(3)Numerical simulation of cloud computing is performed to verify the feasibility of cloud computing in geotechnical engineering.Through the sensitivity analysis of the core influencing factors of the toppling slope of the soft,and hard layers,,the results show that the stability of the toppling slope is mainly determined by the soft rock parameters,and the hard rock parameters and the soft rock thickness will intensify the damage to a certain extent.(4)Through the stability analysis of the left bank slope of the axis of the Delsitanisagua Hydropower Station,it is determined that the failure.mode of the slope is a block dumping failure.The improved prestressed cable reinforcement method is used to reinforce the slope.The results show that the improved prestressed cable reinforcement method can effectively control the slope displacement,reduce the area of dhe plastic zone,and the force of the anchor cable iwill follow the slope.Deformation changes at the same time,the improved cable reinforcemrnt method.can reflect the damage status of the cable grout.