Study of impact factors sensitivity of slope stability based on grey correlation analysis
Yin Jin · Journal of Hefei University of Technology · 2015
Based on the fundamental principles of the widely used Sweden arc method and Bishop method,the safety coefficients of slope stability under four different impact factors are obtained.The computational model is set up with grey correlation analysis and the impact factors sensitivity of slope stability is analyzed by using the corresponding Matlab program.The result shows that the safety factors obtained by the Bishop method are generally bigger than those of Sweden arc method;the Sweden arc method is more sensitive to the changes of central angle,pore pressure coefficient,slope height and slope angle;for both the two methods,the influence of central angle is bigger than that of pore pressure coefficient,and the effect of slope angle is bigger than that of slope height.Grey correlation grade can overcome the shortcomings of the traditional regression model and evaluate impact factors sensitivity accurately,which provides a basis for the design and management of the slope engineering.