客运专线长大坡度列车追踪间隔检算分析

Analysis on tracing interval of long steep slope in passenger dedicated line

为确定客运专线的线路坡度对列车追踪间隔的影响,需要对客运专线长大坡段的列车追踪间隔进行检算分析。基于连续式速度曲线模式控制列车的理论依据,论证了制动距离、线路坡度、列车速度及追踪间隔之间存在紧密联系,得出列车制动性能随运行速度的提高而逐渐下降,运行速度越高,追踪间隔时间则越长;追踪间隔时间随坡度增大而变长。该研究结果丰富了客运专线的选线内涵,为中国客运专线的发展创造了条件,尤其为复杂环境的艰险山区线路设计提供了参考经验。

In order to determine the impact of the line slope on the tracking interval of the passenger dedicated line, it is necessary to check and analyze the tracking interval of the passenger dedicated line. Based on the theory of continuous speed curve mode controlling train, it is proved that there are close relations between braking distance, line slope, train speed and tracking interval. It is concluded that the braking performance of the train gradually decreases with the increase of the running speed, and the higher the running speed, the longer the tracking interval;the tracking interval also increases with increasing slope. The results enrich the connotation of the selection of the passenger dedicated line, create conditions for the development of the Chinese passenger dedicated line, and provide reference experience for the design of difficult and dangerous mountain lines in complex environments.