苏联铁路虽从理论研究中得出双线铁路的技术负荷应以0.73～0.80为宜,目前某些繁忙双线的实际行车量已达每昼夜130～150对列车。在分析计算列车延误损失费和技术作业可行性的基础上,认为双线铁路的实际行车量极限为140对列车。文章还介绍了苏联铁路强化运用繁忙双线和提高其运营可靠性的做法。 Although the Soviet Union’s railway from the theoretical study concluded that the technical load of double-track railway should be 0.73 to 0.80 is appropriate, the current actual busy two-lane traffic has reached 130-150 pairs of trains per day and night. Based on the analysis and calculation of train delay loss fee and feasibility of technical operation, it is considered that the actual traffic volume of double-track railway is 140 pairs of trains. The article also introduces the Soviet Union railway to strengthen the use of busy double-lane and improve the operational reliability of the practice.