【摘要】：為了充分利用運(yùn)輸能力和完成煤炭運(yùn)量任務(wù),大秦鐵路按照“以運(yùn)定需”的模式來制定和實(shí)行生產(chǎn)計(jì)劃。結(jié)果導(dǎo)致了實(shí)際的煤炭運(yùn)輸需求與大秦鐵路運(yùn)輸供給在運(yùn)輸?shù)拿禾繑?shù)量、煤種等方面的不匹配,煤炭客戶的需求得不到滿足,煤炭積壓在港口,列車無法在港口卸煤只能在車站停留等待卸車,以致于固定車底周轉(zhuǎn)緩慢,最終造成大秦鐵路的運(yùn)輸供給能力的損失。為了避免上述現(xiàn)象的發(fā)生,有必要對(duì)大秦鐵路運(yùn)輸需求與供給的匹配進(jìn)行研究。 首先分析了影響大秦鐵路運(yùn)輸需求與供給的主要因素,將大秦鐵路運(yùn)輸需求的影響因素劃分為直接影響因素、間接影響因素和綜合影響因素,運(yùn)輸供給的影響因素劃分為外部因素和內(nèi)部因素。 在分析了大秦鐵路客戶運(yùn)輸需求重要性的影響因素的基礎(chǔ)上,構(gòu)建了運(yùn)輸需求重要性的評(píng)價(jià)指標(biāo)體系。通過分析各種評(píng)價(jià)方法的優(yōu)缺點(diǎn)及適用范圍,采用了灰色綜合評(píng)價(jià)法對(duì)其進(jìn)行評(píng)價(jià)。通過實(shí)例研究,說明該評(píng)價(jià)方法具有可行性。 在上述研究的基礎(chǔ)上,根據(jù)大秦鐵路運(yùn)輸?shù)奶攸c(diǎn),建立了大秦鐵路供需匹配模型。該模型能為各個(gè)運(yùn)輸需求合理地分配運(yùn)輸供給,使得運(yùn)輸供需匹配程度最大。模型是一個(gè)整數(shù)線性規(guī)劃模型。針對(duì)模型的特點(diǎn),本文設(shè)計(jì)了一種啟發(fā)式算法,分析了算法的計(jì)算復(fù)雜性,其計(jì)算復(fù)雜度是一個(gè)多項(xiàng)式函數(shù)。通過一個(gè)實(shí)例驗(yàn)證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.
【學(xué)位授予單位】：中南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：F532

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