列车结构变动对车站通过能力影响的研究

在车站技术设备及作业组织方法不改变的条件下,列车结构变动是影响车站通过能力的主要因素,对车站到发线通过能力影响的程度主要取决于各种列车占用到发线的时间差。当时间差较大,客货列车占线时间比较小,则增开旅客列车对货物列车的影响较小。在固定作业时间不变的条件下,无调列车比提高对技术站通过能力产生正面影响。通过分析增加旅客列车和提高无调列车比对车站通过能力的影响因子,推导出车站通过能力变化情况的计算公式。以内江车站通过能力为例计算表明,如果车站固定作业时间保持不变,无调列车比由11%提高到30%,则到发线能力较原来提高8.2%,增效显著。

Research on the Influence of the Carrying Capacity at Station by the Change of Train Composition

The train category alteration is the main factor affecting the carrying capacity at station if there is no change of the technical equipments and the organization of station working methods. The effect degree to the carrying capacity depends on the difference of time that the different types of the trains occupy at the station. When time difference is relatively heavy, the rate of passenger trains and freight trains occupy time at the line is relatively little. Adding passenger trains will have little influence on freight trains. On terms that the fixed operating time remains invariant, the increase of the non-resorting train proportion will exert a positive influence on the carrying capacity of technical station. The factor of carrying capacity at station is analyzed with the effect of the passenger trains added and the non-resorting train proportion increased, and the calculation formula to describe the capacity change is concluded. The calculation on the capacity of Neijiang station shows that if the fixed operating time remains invariant, raises the non-resorting train proportion from 11 percent to 30 percent, the capacity will increase 8.2 percent, the effect is remarkable.