Research On The Organization Mode And Passing Capacity Matching Of Passenger And Freight Colline Railway Transportation On 200km/h Alpine And Long Slope

In order to alleviate the contradiction between the increasing demand for passenger and freight transportation and the serious shortage of railway capacity in the alpine region of the western plateau,China will build a number of representative 200km/h alpine ramp passenger and freight co-track railways in succession.In part of the 200km/h high cold long ramp passenger and freight co-line railway has been started construction stage,it has great practical significance and theoretical research value for the qualitative and quantitative study of different transportation organization mode and transit capacity of such railway.The main research contents of this paper are as follows:1.The paper expounds the technical characteristics of the 200km/h long and high cold ramp passenger and freight co-line railway and its influence on transportation organization,and analyzes the existing problems in the calculation of its passing capacity.2.Expatiate the difference between the passenger and freight co-line railway with the long and cold high temperature ramps of 200km/h and the high-speed railway and the general speed railway.By analyzing and combining the train tracking mode,the EMU operation mode and the passenger and freight train operation mode,eight transportation organization modes of 200km/h high cold long ramp passenger and freight railway co-line are put forward.3.For the freight train to avoid the opposite direction EMU in the station under the mode of moving goods not meeting each other,through the establishment of the upstream and downstream EMU migration model,analyze and summarize the variation rule of the time to avoid under different circumstances,and adopt the mathematical thought method of definite integral to calculate the total time to avoid;In view of the effect of discontinuous skylight on cross-section freight train,the calculation method of discontinuous rectangular skylight and V-shaped skylight on cross-section freight train deduction is studied by means of visual graphic method.In view of the influence of the arrival and departure lines on the passing capacity,the calculation formula of freight train deduction coefficient under different arrival and departure lines is proposed by improving the existing calculation formula of tracking freight train deduction coefficient.Combined with the above calculation methods,the timedivided capacity calculation method based on the deduction coefficient method is improved,and 8 transportation organization modes of 200km/h high cold long ramps passenger and freight co-line railway are proposed.4.Taking XX200km/h long and alpine ramp passenger and freight railway as a case study,the feasibility and rationality of the improved capacity calculation method proposed in the paper are verified by analyzing the matching situation between supply capacity and passenger and freight transport demand capacity of different transportation organization modes.Finally,based on the matching degree calculation,the paper proposes the transportation organization mode of XX railway in different research years.The research results of this paper have practical significance to the selection of organization mode and the calculation of passing capacity of the future 200km/h alpine long ramp passenger and freight railway transportation.