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1 引言 为了满足铁路运输发展的要求 ,铁道部于 2 0 0 0年 10月 2 1日再次调图提速 ,京九线作为新建贯穿南北的主要干线 ,经测试客运速度定为 12 0ｋｍ/ｈ、货运速度定为 80ｋｍ/ｈ。聊城北机务段作为京九线上的一个新建段 ,配属东风4Ｂ型机车 4 4台、东风7Ｃ型机车 4台 ,
1 Introduction In order to meet the requirements of the development of railway transportation, the Ministry of Railways re-plans the speed increase on October 21, 2000. As the main trunk line to be built across the north and south, the passenger throughput of the Beijing-Kowloon Railway will be set at 120 km / h. Shipping speed set at 80km / h. Liaocheng North Depot as a new section on the Beijing-Kowloon Line, with 4 4 Dongfeng 4B locomotives and 4 Dongfeng 7C locomotives,