焦柳铁路牙屯堡至八斗区段限制坡度方案研究

A Study on the Ruling Gradient of Yatunbao to Badou Section of Jiaozuo-Liuzhou Line

牙屯堡至八斗区段是焦柳铁路怀化-柳州段限制坡度最大的区段,对列车运行产生不利影响,为了提升运行速度和通过能力,需要研究合理可行的限制坡度改造方案。阐述焦柳铁路牙屯堡至八斗区段技术条件和存在问题,考虑线路功能定位、线路条件、运输需求及运输安全等因素,提出4个限制坡度解决方案。比较分析各方案的机车选型、衔接线路限制坡度、区间通过能力、列车运行速度、投资费用。经综合比选,推荐采用维持既有限制坡度,采用补机牵引方案作为牙屯堡至八斗区段的限制坡度方案,以缓解线路能力瓶颈,提升区段运输效率。

The ruling gradient of Yatunbao to Badou section is the largest of Huaihua to Liuzhou section of Jiaozuo-Liuzhou Line.In order to improve the running speed and carrying capacity,it is necessary to study the reasonable and feasible reconstruction plan for the ruling gradient.This paper expounds on the technical conditions and existing problems of Yatunbao to Badou Section of Jiaozuo-Liuzhou Line.It puts forward four solutions for the ruling gradient considering the factors of line functions,line conditions,transportation demand and transportation safety.The locomotive selection,ruling gradient of connecting lines,section carrying capacity,train running speed and investment cost of each solution are compared and analyzed.This paper recommends to adopt the solution of maintaining the existing ruling gradient and using banking locomotive,to alleviate the capacity bottleneck of line and improve the transportation efficiency of the section.