Study On TBM Selection Based On Fuzzy Mathematical Model

At present,the difficulties faced in the construction project are gradually increasing.Whether it is the construction environment,the terrain,or the geological conditions of the construction site,the TBM method has become a long-term and dangerous roadway due to its unique advantages.The main method used in the construction,the reason for choosing this method,mainly involves three factors,including cost,technology and construction period.However,when using the TBM method for construction,it is affected by many factors,which reduces the scope of application of this basic method to a certain extent.The main influencing factors include large deformation of soft rock,rock burst,and inrush water.Therefore,whether the TBM method can be used during the construction process requires a corresponding adaptive evaluation.From the current situation,no matter whether it is the selection of TBM or the evaluation of excavation adaptability,relatively perfect quantitative analysis methods and system theory are not established.These reasons will have a negative impact on their adaptability.Therefore,based on complex geological conditions,it is very important to make appropriate research on the TBM method,and it has become an important direction of current research.Based on the research of scholars at home and abroad,this paper sorts out the research progress of fuzzy mathematics evaluation method and TBM equipment selection,how to quantify the influencing factors of TBM equipment selection,and how to integrate fuzzy mathematics evaluation method into TBM equipment selection.The main research results are as follows:(1)The selection principle of TBM equipment in tunnel engineering was sorted out,and the internal factors and external factors in the selection of TBM equipment were defined.The connotation of TBM equipment selection and the basis and method of equipment selection were listed.Systematic approach to the selection of some TBM equipment.(2)Construct an evaluation system for the selection of TBM equipment,and then select the evaluation indicators according to the actual situation,and give a detailed introduction to the specific calculation and main significance of the evaluation indicators.Based on the above analysis,the main indicators of the selected indicators.The content is specifically clarified.Secondly,according to the relevant theoretical knowledge,the corresponding evaluation model is established,and based on the selection of TBM equipment in fuzzy mathematics,the corresponding comparison judgment matrix is ? ? obtained through the establishment of the hierarchical structure.Then,the weight and membership degree are clarified.Finally,a more reasonablecomprehensive index evaluation method is selected according to the actual situation.Based on the traditional evaluation method,the appropriate optimization and improvement are carried out,and the traditional methods and improvements are A simple comparison of the methods is carried out to fully explain the necessity and rationality of the comprehensive index method selected in this paper.(3)Introduce the general situation of the central water supply project,and then apply the fuzzy mathematics theory to the TBM equipment selection evaluation.Through the specific definition of the comparison judgment matrix,the weight and membership degree are determined.Finally,based on the improved comprehensive index evaluation model,it is applied to the selection of TBM equipment in the central water supply project,and the final evaluation results are obtained by giving selection suggestions.