关键词: 客运专线, 列车运行调整, 遗传算法, 混沌变异

Abstract: The objects and subjects of Passenger-Dedicated Lines（PDL） train operation adjustment become more complicated at the period of Passenger-Dedicated Lines（PDL），researching high efficient operation adjustment measure to avoid delay propagation is becoming a focus of PDL transportation organization.Aiming at this problem，this paper analyzes PDL train operation adjustment model，constructs the mathematical model of PDL train operation adjustment，proposes train operation adjustment model based on chaos-improved GA，and designs chaotic mutation operator.At last，an experimental example about Zheng-Xi PDL is constructed，the experimental result demonstrates that the improved algorithm can acquire a better optimal ability than SGA，and the improved adjustment model is feasible.

Key words: passenger-dedicated lines, train operation adjustment, Genetic Algorithm, Chaotic mutation