Study on the Reliability of Mine Rock Slopes Based on Lasso and Optimization Algorithm
[Purposes]In order to solve the problems of overfitting and collinearity that exist in fitting the slope limit state equations,and to obtain more realistic safety factors,a mine rock slope reliability analy-sis model based on LASSO-GA-PSO is established based on the consideration of dilation angles.[Meth-ods]By combining Slide with FLAC3D,the slope safety factor considering the change of dilation angle is calculated the data were fitted by LASSO to obtain the corresponding limit state equation;The adaptive particle swarm optimization algorithm program based on genetic algorithm and LHS optimization is com-piled,and the slope reliability analysis model based on LASSO-GA-PSO is established to determine the reliability index of the slope.[Findings]The reliability index obtained from the LASSO-GA-PSO model of quadratic polynomial with cross terms is 2.325 7,which is slightly smaller than that of 2.387 9 of LASSO-Monte-Carlo,and the error is 2.6%.[Conclusions]The model has a good optimization result and can provide reference for similar projects.
mine rock slopedilation angleFLAC3DLASSO algorithmreliability index
NETL
NSTL
万方数据
维普
