大秦铁路通过能力计算的特殊性分析

Analysis of the Particularity of Calculating Carrying Capacity of Datong-Qinhuangdao Railway

研究目的:一般情况下通过能力的计算公式,不能充分体现大秦铁路综合维修天窗开设时间、方式以及中间站到发线数量对运输组织和通过能力的影响。本文通过分析影响大秦铁路通过能力的诸多因素,提出体现大秦铁路特点的通过能力计算方法,可供重载线路勘察设计时参考。研究结论:大秦铁路通过能力计算的特殊性表现在3个方面,一是天窗开设方式有"V"型和垂直型天窗两种,天窗占用运行图时间不同;二是中间站到发线数量会直接影响垂直天窗的天窗外损失时间;三是"V"型天窗和垂直型天窗开设数量会影响日均通过能力。

Research purposes： Generally, some lntluence tactors can not be fully reflected in the calculationformula of carrying capacity, such as the time and modes of the comprehensive window maintenance, and the influence of quantity of arrival and departure track in intermediate station on the transport organization and carrying capacity, etc. This paper analyzes the influence factors on Datong - Qinhuangdao Railway, and puts forward a new calculation method for the carrying capacity of Datong - Qinhuangdao railway for being as the valuable reference to survey and design of heavy - haul railway.Research conclusions： The particularity of calculating carrying capacity of Datong - Qinhuangdao Railway mainly reflects in the following three aspects： （ 1 ） There are two kinds of comprehensive window arrangement, namely V - mode and vertical skylight and they occupy the different time of train diagrams. （2） The quantity of arrival and departure track in intermediate station will directly influence the loss window time outside maintenance. （3） The number of V - mode and vertical skylight will influence the daily carrying capacity of the railway.