【摘要】 为了对重载铁路港前站接卸系统能力进行准确评估，本研究分析了重载铁路港前站接卸系统，根据港前站的技术作业过程，接卸系统分为到达子系统、转场子系统和卸车子系统3个部分，共同构成了三级串联排队系统。分析各子系统车流和服务流的规律，并利用经典排队论建立排队模型。通过研究作业时间不均衡和前后作业环节相互影响下的接卸系统能力，计算出各子系统的排队指标。最后以神港站为例，运用上述模型确定了参数和指标，计算了其接卸系统能力并分析了能力瓶颈。研究结果为重载铁路港前站接卸系统的优化设计提供了理论参考。更多还原

【Abstract】 To accurately assess the capacity of the receiving and unloading system in the heavy-haul railway port station, the research divided the system into three parts according to the technical operation process of the port station: the arrival subsystem, the transfer subsystem, and the unloading subsystem, which together constituted a three-stage tandem queuing system. The distribution law of the traffic flow and service flow in each subsystem was analyzed, and a queuing model was built using queuing theory. By studying the system capacity under the influence of unbalanced operating time and the interaction of the previous and next operating links, the parameters and queuing indicators of each subsystem were calculated. Finally, taking Shengang Station as an example, the parameters and indicators were determined using the proposed model. Its capacity was calculated and bottlenecks were analyzed. The research results provide a theoretical reference for the capacity optimization of the receiving and unloading system in the heavy-haul railway port station.更多还原