我国在建线路最长、技术标准最高、投资规模最大的客运专线———武广客运专线于2005年6月23日正式开工建设。既有京广铁路是我国最繁忙的干线之一,其中武汉至广州段尤为紧张,运输能力处于超饱和状态,运输质量难以进一步提高,特别是节假日期间因增开大量旅客列车,货物列车被迫 China’s largest line under construction, the highest technical standards, the largest investment in the passenger line --- Wuhan-Guangzhou Passenger Dedicated Line in June 23, 2005 officially started construction. Both the Jing-Guang Railroad is one of the busiest trunk lines in China. Among them, the Wuhan-Guangzhou section is particularly tense, its transport capacity is in an over-saturated state, and the quality of its transport is hard to be further enhanced. In particular, during the holidays, a large number of passenger trains are opened and goods trains are forced