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根据重载铁路运输特点,将其划分为装车区和卸车区两个部分,对完整的空车回送过程进行研究。为保证装车的连续性和稳定性,以空车早到或延误车小时最小为目标,以满足装车点空车需求、卸车区线路通过能力、装车点时间窗要求、列车最小追踪间隔时间、列车组合及分解类型、方式及数量为约束,建立了基于时间窗的重载铁路运输空车回送优化模型,旨在提高空车回送效率和降低企业运营成本。以大秦线重载铁路的实际数据对模型进行了验证,计算结果表明了模型的正确性和有效性。
According to the characteristics of heavy haul railway transportation, the paper divides it into two parts: loading area and unloading area, and studies the complete process of empty delivery. In order to ensure the continuity and stability of loading, the goal of emptying the car early or delay the minimum hours of vehicles is to meet the demand of loading empty car, the passing ability of the unloading area, the time window of loading point, the minimum tracing interval Time, train combination and decomposition type, method and quantity as constraints, a time window-based optimization model for empty-car backhaul of heavy-haul railways was established, which aimed to improve the efficiency of empty-vehicle return and reduce the operating costs of enterprises. The model is verified by the actual data of the heavy haul railway in Da-Qin railway. The calculation results show the correctness and effectiveness of the model.