在详细分析了列车运行图缓冲时间的大小及其分布规律对列车晚点传播影响的基础上，通过建立列车运行图调整系统，对给定晚点程度的列车进行模拟调整，从而计算出列车晚点恢复率（或增晚时间）、晚点传播区大小、连带晚点时间和关键列车运行线等指标来达到对列车运行图可调整程度优劣评判的目的。 Based on the detailed analysis of the influence of the train buffer time and its distribution on the delay propagation of trains, the adjustment system of the train operation map was established to simulate the train with a given delay and calculate the delay recovery rate (Or later time), late transmission area size, associated with the late time and the key train line and other indicators to achieve the train operation diagram can be adjusted to determine the merits of the purpose.