Multilevel variable fuzzy variable weight comprehensive evaluation method for geological safety of urban underground space
At present,there are still deficiencies in the application and integration of various comprehensive evaluation theories.And the weighted average model is generally used in the comprehensive evaluation model,which is not suitable for complex nonlinear system evaluation.In this paper,fuzzy set theory,variable fuzzy set theory,and variable weight theory are integrated,and a multistage variable fuzzy variable weight comprehensive evaluation method is proposed.The comprehensive evaluation model of this method is better and has stronger adaptability.In theory,by modifying the comprehensive evaluation model,the algorithm in this paper can be degraded to common fuzzy methods,such as fuzzy comprehensive evaluation methods,fuzzy variable weight comprehensive evaluation methods,and variable fuzzy comprehensive evaluation methods.Taking the geological security evaluation of urban underground space in Hongdao District of Qingdao City as an example,this paper establishes a comprehensive evaluation index system and gives the judgment matrix,consistency test,and calculation results of index weights of each level.At the same time,it further gives the classification criterion table of the evaluation index and the construction diagram of the membership function and designs the four most representative comprehensive evaluation models.The results of four different evaluation methods are obtained.Through the comparison of evaluation results,combined with the actual data in the study area,the advantages and disadvantages of the four methods are analyzed,and the advanced nature and application effect of the method in this paper is verified.This paper describes in detail the multilevel variable fuzzy variable weight synthetic evaluation algorithm and evaluation process.By adjusting the three parameters of the comprehensive evaluation model,various evaluation models can be derived.The comprehensive evaluation model in this paper,combined with the membership function,evaluation index system,and index weight,can achieve a more accurate simulation of complex systems.The multilevel variable fuzzy variable weight comprehensive evaluation method is a comprehensive evaluation method integrating multiple theories.Compared with other common comprehensive evaluation methods,this method is more suitable for geological safety evaluation of urban underground space and comprehensive evaluation of other complex systems.
safety engineeringgeological safety evaluationevaluation of complex systemurban underground spacemulti-level variable fuzzy variable weightcomprehensive evaluation model
NETL
NSTL
万方数据
维普
