大秦铁路运输需求与供给匹配研究

发布时间：2018-11-28 20:22

【摘要】：为了充分利用运输能力和完成煤炭运量任务,大秦铁路按照“以运定需”的模式来制定和实行生产计划。结果导致了实际的煤炭运输需求与大秦铁路运输供给在运输的煤炭数量、煤种等方面的不匹配,煤炭客户的需求得不到满足,煤炭积压在港口,列车无法在港口卸煤只能在车站停留等待卸车,以致于固定车底周转缓慢,最终造成大秦铁路的运输供给能力的损失。为了避免上述现象的发生,有必要对大秦铁路运输需求与供给的匹配进行研究。首先分析了影响大秦铁路运输需求与供给的主要因素,将大秦铁路运输需求的影响因素划分为直接影响因素、间接影响因素和综合影响因素,运输供给的影响因素划分为外部因素和内部因素。在分析了大秦铁路客户运输需求重要性的影响因素的基础上,构建了运输需求重要性的评价指标体系。通过分析各种评价方法的优缺点及适用范围,采用了灰色综合评价法对其进行评价。通过实例研究,说明该评价方法具有可行性。在上述研究的基础上,根据大秦铁路运输的特点,建立了大秦铁路供需匹配模型。该模型能为各个运输需求合理地分配运输供给,使得运输供需匹配程度最大。模型是一个整数线性规划模型。针对模型的特点,本文设计了一种启发式算法,分析了算法的计算复杂性,其计算复杂度是一个多项式函数。通过一个实例验证了模型和算法的有效性。
[Abstract]:In order to make full use of the transportation capacity and complete the task of coal transport volume, the Daqin Railway formulates and implements the production plan according to the mode of "according to the demand of transportation". As a result, the actual demand for coal transportation is not matched with the supply of coal transported by the Daqin Railway in terms of the quantity of coal transported, the type of coal, etc., the demand of coal customers is not met, and the coal backlog is in the port. The train can not unload coal in the port and can only stop at the station and wait for the unloading, which leads to the slow turnover under the fixed car, resulting in the loss of the transport supply capacity of the Daqin Railway. In order to avoid the above phenomenon, it is necessary to study the matching of the demand and supply of Daqin railway transportation. Firstly, it analyzes the main factors that affect the demand and supply of Daqin railway transportation, and divides the influencing factors of Daqin railway transportation demand into direct influence factors, indirect influence factors and comprehensive influence factors. The influencing factors of transportation supply are divided into external factors and internal factors. Based on the analysis of the factors affecting the importance of transport demand of Da-Qin railway customers, the evaluation index system of the importance of transport demand is constructed. By analyzing the advantages and disadvantages of various evaluation methods and their applicable scope, the grey comprehensive evaluation method is used to evaluate them. A case study shows that the evaluation method is feasible. On the basis of the above research, according to the characteristics of Daqin railway transportation, the matching model of supply and demand of Daqin railway is established. The model can reasonably allocate transport supply for each transport demand, which makes the matching degree of transport supply and demand maximum. The model is an integer linear programming model. According to the characteristics of the model, this paper designs a heuristic algorithm, and analyzes the computational complexity of the algorithm, which is a polynomial function. An example is given to verify the validity of the model and algorithm.
【学位授予单位】：中南大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：F532

【参考文献】