摘要:研究目的：目前银川-北京普通旅客列车运行时间为12.6 h,如果利用太中银铁路开行银川-北京200 km/h 等级的动车组列车，运行径路为太中银铁路银川-定边及定边-太原、石太客专太原-石家庄、京石客专石家 庄-北京，运行时间将缩短到7. 5 h，将大幅度缩短银川到北京的旅行时间，因此有必要研究太中银铁路开行 动车组列车的方案。但太中银铁路为客货共线铁路，且银川-定边为单线，单线段动车如何开行、通过能力是 否满足要求等是需要研究的问题，本文即对上述问题展开研究。研究结论:(1)理论上银川-定边可以开行动车组列车；（2)银川-北京应开行200 km/h速度等级动车 组列车；（3)为了减少既有线运营风险，推荐银川-定边单线段运行速度160 km/h，定边-太原双线段运行速 度200 km/h;(4)该研究成果可为其他类似项目提供借鉴。

Abstract:Research purposes: The average travelling time of common - speed passenger train from Yinchuan to Beijing reaches 12.6 hours now. While operating 200 km/h - EMUtrain on Taiyuan - Zhongwei - Yinchuan Line，the average travelling time will be shortened to 7. 5 h significantly， the travelling route is from Yinchuan to Dingbian to Taiyuan along Taiyuan - Zhongwei - Yinchuan Line，then from Taiyuan to Shijiazhuang along Shijiazhuang - Taiyuan DPL，then from Shijiazhuang to Being along Beijing - Shijiazhuang DPL. So it is necessary to study the operation of EMU trains on Taiyuan - Zhongwei - Yinchuan line. Considering that Taiyuan - Zhongwei - Yinchuan Line was designed as mixed passenger and freight line and the line from Yinchuan to Dingbian is single - line，this paper is aimed to solve problems on the carrying capacity and organization plan of Taiyuan - Zhongwei - Yinchuan Line operating EMU train. Research conclusions：( 1 ) The EMU train operation on Yinchuan - Dingbian line is feasibility in theory. (2) The speed grade of Yinchuan - Beijing EMU train should be 200 km/h. (3) To mitigate operating risks，the organization plan that the EMU train travels 160 km/h on Yinchuan - Dingbian single - line and 200 km/h on Dingbian - Taiyuan double - line is recommended. (4 ) The research results can provide a reference for otlier similar project.