提高列车运行速度，多年来一直是铁路运输部门的热点议题，也是社会普遍关心的问题。特别是铁路主要干线客货流量比较集中，提高列车行车速度对社会影响极大，同时对于缓解能力紧张状况也有积极作用。更主要的是提速可推动铁路科技进步的发展，从而使铁路在交通运输中更具吸引 Improving the speed of trains has been a hot topic for the railway transport sector for many years and is also a common concern in society. In particular, passenger and freight traffic on the main railways is concentrated. It is very important for the society to have a great influence on the speed of train traffic. At the same time, it also plays a positive role in easing the tense situation of capacity. More importantly, speeding up can promote the development of railway science and technology and make the railway more attractive in transportation