Research On Caculation Method Of Passing Capacity Of Railway In Complex And Difficult Mountainous Area

The research on the passability calculation method of Sichuan-Tibet railway is of great significance,which can not only provide a certain method for the passability calculation of mountain railway,but also provide a certain reference for the operation and traffic organization method of Sichuan-Tibet railway after the completion of construction.Taking the calculation of the passing capacity of Sichuan-Tibet Railway as the goal,and combining theory with practice as the principle,this paper improves the method on the basis of the existing research on the passing capacity,and adopts the methods of literature research,comparative analysis,qualitative and quantitative combination to study the calculation method of the passing capacity of Sichuan-Tibet Railway from the aspects of stop,crossing and speed difference.The main research contents of this paper are as follows:1.Analyze the current research situation at home and abroad,and put forward the view that the existing passability calculation method is not fully applicable to the Sichuan-Tibet Railway;2.Analyze the existing transportation organization mode,operation combination mode,tracking structure and moving freight train rendezvous mode,and define the suitable transportation organization characteristics of Sichuan-Tibet railway according to the characteristics of Sichuan-Tibet railway;3.Analyze the impact on the passing capacity from the three aspects of facilities and equipment,running organization and the particularity of Sichuan-Tibet Railway,and compare and analyze the existing calculation methods of the passing capacity,including: The method of deduction coefficient method,direct calculation method,minimum train interval method and simulation method have obtained the inapplicability of various calculation methods in the calculation of the passing capacity of Sichuan-Tibet railway,and put forward the calculation method of the passing capacity of Sichuan-Tibet railway based on the deduction coefficient method.The passing capacity calculation method can be used in the section of double-track railway and is defined.4.Analyzed the ideas and characteristics of the proposed calculation method,put forward the concept of conversion coefficient and analyzed the conversion coefficient from three aspects of stop,speed difference and crossing to get the final conversion coefficient,and put forward the calculation steps and applicability of the capacity calculation method;5.The new method is used to calculate the passing capacity of Sichuan-Tibet Railway.The passing capacity of Sichuan-Tibet Railway is obtained by transforming the passing capacity calculation method in Chapter 4 into a passing capacity small program through Matlab.This paper focuses on the practical problems of Sichuan-Tibet railway development,considers the main factors affecting the passing capacity,and through indepth analysis,obtains the calculation method of the passing capacity of Sichuan-Tibet railway.The research of this paper has a certain reference value for the development of Sichuan-Tibet railway and lays a corresponding theoretical foundation for the subsequent construction of Sichuan-Tibet railway.