Rough Set Rule Mining And Software Development In The Mining Method Selection

Based on the research situation of analysis to slope stability and the sensitivity analysis of slope stability, aim at the lack of model selection and parameter transformation research,the lack of sensitivity of model parameters and the lack of model validation tests and other issues, combine model parameters on slope stability studies with the model parameter sensitivity analysis and experimental verification of landslide, providing the reasonable basis for model selection of slope stability and parameter determination.On the applicability of software with slope stability, choose ABAQUS as calculation software. Analysis the results of slope stability analysis, determine the M-C model and the linear D-P model as the computed model. Problem for the unified model parameters derived parameters conversion formula between D-P model and M-C model.Based on ABAQUS, through specific examples, change one model parameters, fixed the other model parameters, the result of model parameters on the slope stability study show:the internal friction angle and cohesion have the greatest impact for the safety factor; cohesion has greatest impact to the maximum equivalent strain and displacement. Summarize the results of the study showed:the results of the sensitivity of the two models are different, the linear D-P model is sensitive to the safety factor, while the M-C model sensitive to the maximum equivalent strain and displacement.In order to further optimize the selection of model parameter and the rationality of model, the grey correlation analysis method is adopted to analyse the sensibility of the parameters of the model based on safety coefficient. The concrete numerical of grey correlation shows that the influence of D-P linear model to safety factor is much more influence than M-C model when model parameters are elastic modulus,poisson's ratio, stick gathered force and dilatancy Angle. That is consistent with the change of model parameters impact on slope stability.Finally through indoor landslide test for D-P linear model and M-C model to confirm the applicability of slope stability. Experimental results show that M-C model calculation results are more identical with experimental results, and D-P linear model have much more influence in safety coefficient.To sum up, the sensitivity analysis of model parameters is an actual effective research in selecting model parameter and the computation model.