Analysis Method And Procedure Developing Of Slope Stability Based On Improved Minimum Potential Energy

There are a lot of slope in natural geographical environment and Engineering in our country.Once the slope is unstable,it will cause heavy casualties,huge economic losses and construction projects.Therefore,study will have theoretical and practical significance in this filed.Paper studies are supported by the National Natural Science Fund Project NO.51304084 and Jiangxi Province Natural Science Fund NO.20151BAB206026.In view of arbitrary shape failure surface,shear potential energy is taken into account and analysis method of slope stability is researched in paper.The main research contents and achievements of thesis are following aspects:(1)For arbitrarily shaped sliding surface of two-dimensional slope,shear potential energy is taken into account and calculation model is established.shear stress of providing shear potential energy is solved by static equilibrium of sliding body along vitural displacement direction.Then system total potential energy function is obtained.Virtual shift is solved based on principle of minimum potential energy and anti-slide force and sliding force are obtained through relationship of force and displacement.Then,safety factor of slope issolved.Paper work improved 2-D slope stability analysis method based on minimum potential energy.(2)Three-dimension analysis method of slope stability is forwarded based on 2D analysis method.Aiming at three-dimension failure surface of arbitrary graphics,unit of sliding body is selected as researching object.Forces of unit sliding body are projected on sliding direction of slope to solve shear stress of supplying shear potential energy,and a more simple and reasonable method is put up for solving shear potential energy.Paper work improved 3-D slope stability analysis method based on minimum potential energy.(3)In order to verify the rationality and applicability of the calculation method,the safety factor of the classic example is calculated by using paper method,and the results are compared with the results of the other algorithms.Results show that the safety factor of the paper calculation method is similar to other methods,which suggests that paper calculation method is reasonable and feasible;shear potential energy has impact on safety factor of slope and results from paper method is closed to traditional analysis method when shear potential energy is considered.At the same time,considering shear potential energy is necessity and rationality.(4)Verify rationality and applicability of paper three-dimensional slope of minimum potential energy,four different types of slope indoor model test is designed.With the help of MATLAB software platform acquisition of sliding surface equation and safety factor is solved by paper analysis method,which is contrasted with 1.(5)GUI design is completed by MATLAB software based on above mentioned improved minimum potential energy slope stability analysis method.The calculation module and interface module are packaged,whic lead to achieving software development of slope stability analysis method.