客运专线通过能力的分析计算

Analysis and Calculation of the Carrying Capacity on Passenger Dedicated Lines

在准移动闭塞条件下,客运专线上的高速列车采用连续式一次速度曲线控制模式控制列车运行。列车追踪间隔时间取I追追,I通过,I发发和I到到4种间隔时间的最大值。分别给出4种追踪间隔时间的计算方法及相关参数的取值,采用牵引计算软件进行更准确的检算。将客运专线上运行的列车划分为200-250 km·h^-1和300-350 km·h^-12种速度类型,以不停站300-350 km·h^-1高速列车为基础计算平行运行图通过能力,200-250 km·h^-1和停站的300-350 km·h^-1高速列车均产生扣除系数,得出扣除系数的取值表,进而得到客运专线通过能力计算方法。以300 km区段为例,计算不同条件下的区间通过能力,结果表明,我国客运专线能够实现3 min追踪间隔,通过能力基本在180对以上。

Under the condition of quasi-moving-block, the control mode of continuous primary velocity curve is adopted for controlling the operation of high-speed trains on passenger dedicated lines. The maximum values of four interval time as Itracing, Ipassing, Ideparting and Iarriving are chosen as the time interval between trains. The methods for calculating these four time intervals and taking the values of related parameters are given respectively. Traction calculation software is adopted for more accurate check-calculation. The trains operated on passenger dedicated lines are divided into two velocity types, namely, 200-250 km·h^-1 and 300-350 km·h^-1. The parallel train working diagram is calculated based on the non-stop 3004 350 km·h^-1 high-speed trains. There are deduction coefficients for both 200-250 km·h^-1 and the stop 300-350 km·h^-1 high-speed trains. The deduction coefficients are calculated and the value tables are obtained. The method for calculating the carrying capacity of passenger dedicated lines is therefore obtained. Taking 300 km section as an example, the section carrying capacity is calculated under various conditions. Results indicate that the tracing interval of 3 min can be achieved on passenger dedicated lines in China, and the carrying capacity can basically exceed 180 pairs.