Rapid Evaluation Method For Stability Of Uniform Slope Under Earthquake And Pore Water Pressure

The stability of slope under the action of earthquake and groundwater is a very complex geotechnical dynamic problem.In order to solve the practical problems encountered,geotechnical workers introduce different analysis theories based on traditional analysis methods for specific geotechnical properties,which greatly enriches the research methods of slope stability analysis.However,most of the current theoretical methods need to be established first The geomechanical and mathematical model of the geological engineering inevitably involves a long and tedious calculation process.In addition,it only takes tens of minutes to solve a slope model with hundreds of thousands of equations on the current slope calculation software.When engineers calculate and analyze an engineering problem,80% of their energy is spent on data preparation,model establishment and data processing.Therefore,it is necessary to explore a more simple and intuitive slope stability analysis method under the action of earthquake and groundwater The rapid design and slope stability evaluation are particularly important.Based on the limit equilibrium theory,a fast analysis method of slope stability under the action of earthquake and groundwater is proposed in this paper.Based on the limit equilibrium theory,a fast analysis method of slope stability under the action of earthquake and groundwater is proposed in this paper.Firstly,the limit equilibrium analysis of a large number of solid slopes under the action of earthquake and groundwater is carried out,and then the parameter inversion is carried out to solve the geological and geometric parameters when the slope is in the critical equilibrium state.The critical state curves of slopes with different slope ratios are drawn by using this parameter,The critical state equation of the slope under the action of earthquake and groundwater is obtained by using the optimal algorithm to fit the critical state curve of the slope.Then,based on the critical state square,the explicit expression of the safety factor of the slope under the action of earthquake and groundwater is derived.Therefore,once the mechanical parameters and geometric parameters of the slope are determined,the safety factor of the slope can be obtained quickly.The given safety factor of slope can also be used for rapid preliminary design of slope.Finally,three examples are given to verify the applicability and effectiveness of the method.The results of the three cases are consistent with the results of the limit equilibrium analysis software slide.