Optimization Of Train Operation Diagram In Single-track Operation Organization Of Double-track Railway

In the daily operation and organization of the railway,there may be cases in which one line of the two-track railway cannot operate trains due to skylight repairs,line damage,and improper operation.At this time,if only one direction of trains is cancelled,it will cause great two-way transportation.As a result of the imbalance,the locomotive and vehicle utilization plan will be greatly affected.Before the line is restored to the two-lane train traffic,how to organize the trains to run in one-line two-way directions(that is,trains on one line that bear the up and down direction)on the premise of meeting the safety of construction and operation,plays an important role in the balance of transportation organization.This article studies the organization of single-track two-way train operation in this context.It mainly conducts in-depth research on the characteristics,influencing factors,drawing of the preparation plan,and optimization of the operation plan of the single-double-track parallel paired train operation diagram after the accident.Focus on the following aspects:Firstly,the situation of single-track operation organization of double-track railway is divided into three categories based on the distribution of single-track sections,which are non-continuous single-track sections,two consecutive single-line sections,and multiple consecutive single-line sections.At the same time,it analyzes the compiling elements of the adjacent train diagrams of the single and double line sections,including two aspects of basic data and compiling principles.The above content is the theoretical basis for the following drawing of the operation diagram compilation plan under different situations.Secondly,it specifically discusses the optimization compilation of the operation diagrams of the discontinuous single-line section of the double-track railway,two consecutive single-line sections,and multiple consecutive single-line sections.According to the different stopping schemes of the trains entering and leaving the single-line section of the station,the situation of the two-track railway non-continuous single-line section is divided into five situations,which are zero point stops and four points through,one point stops and three points through,two points stop and two points through,three points stop and one point through,four points stop and zero points through.The train operation diagram in each situation is drawn.Then take the maximum passing capacity and the highest travel speed as the optimization goals,analyze and compare the size relationship between the station parameters and section parameters that affect the compilation of the train diagram,and finally select the optimal diagram among the feasible diagram compilation schemes.Prepare the plan.Due to the increase in the number of single-line sections,the number of feasible operation diagram compilation schemes and the number of parameters involved in the selection of the optimal operation diagram compilation scheme have increased greatly.This paper compares the size relationship between the parameters to determine the optimal operation diagram and travel speed with the largest section passing capacity.The highest optimization run chart.Finally,combining the three situations of non-continuous single-track section,two consecutive single-line sections,and continuous multiple single-line sections,specific parameter values are set for the train operation environment,and the calculation examples are analyzed,and the optimized operation diagram and travel speed with the largest passing capacity are obtained.The highest optimization run chart.It proves the accuracy and validity of the optimization analysis of the operation diagram of single-track operation in double-track railway.