修建第二双线将成为铁路扩能的重要措施

Building the Second Double Track Will Become An Important Measure of Enlarging Railway Transportation Capacity

从五方面论述了修建第二双线将成为铁路扩能的重要措施：提高客货运输质量的要求；需要的运输能力超过双线自动闭塞线路可能达到的运输能力限度；为解决日趋严重客货互争能力，实现客货分线运行；为修建客运专线；为发展重载和高速运输技术创造条件。

he paper expounds from five aspects that building the second double track will become an important measure of enlarging railway transportation capacity.The aspects are: the needs of raising the quality of passenger and freight transportation; the demand for transportation capacity exceeds the maximum capacity of the lines of double-track automatic block;to realize the separation of passenger transnsportation line and freight transportation line so as to solve the ever- increasing problems of freight and passenger trains fighting for transportation capacity; for building dedicated line for passenger trains;and creating conditions for developing heavy haul and high speed transportation technology.