基于GPRs网络的煤炭港口传输路径优化研究

发布时间：2018-05-12 17:54

本文选题：GPRs网络 + 反常现象　；参考：《华北电力大学》2013年硕士论文

【摘要】：近年来，随着港口吞吐量的增加，人们逐步意识到港口内部物流作业效率对港口发展的重要性，尤其是货物在港口内部的高效传输，直接影响到港口堆场库存和船舶等待（“压船”）等，从而对港口整体运营效率产生影响。煤炭港口的业务流程通常被称为三大模块：（1）“点菜单”；（2）垛位选择；（3）工艺路线选择。其中，“点菜单”和垛位选择两大模块对港口周转率起着直接、重要的影响，而工艺路线的选择虽然对港口周转率的影响具有间接性的特征，但它却是前两个模块执行的好坏的重要保障因素，换句话说，煤炭在港传输路径选择的好坏是提高煤炭港口周转率的重要保障。然而，在煤炭港口内部，传输路径的选择是一个熟练工种，其主要依靠经验执行，并无理论依据作为支撑。本文通过研究，旨在为煤炭港口传输路径选择提供理论依据，并优化煤炭在港口内部的传输路径，，从而实现提高港口周转率的目的。以秦皇岛煤炭港口为例，分析煤炭在港口内部传输过程中存在的问题。通过分析发现各作业之间存在着各种最小，甚至最大时间约束关系，所以本文采用了包含以上各种时间约束关系的GPRs网络模型进行分析。本文以GPRs网络为理论基础，建立了煤炭在港传输路径选择模型，从而为煤炭在港传输路径的选择提供了理论依据，并达到优化煤炭在港口内部的传输路径，提高煤炭在港周转率和设备利用率，以及提高港口综合竞争力的效果。本文采用将路径问题转化为时间问题的思维方法，准确的表示出了工序间各时间约束关系，为进一步开展GPRs网络的理论和应用研究提供了新思路。通过对煤炭港口传输路径GPRs网络的研究，发现其中存在违反人们观念的反常现象，如：在一定条件下，在煤炭由垛位取出运至泊位时，减少取料机的数量，煤炭在港周转率不变。这种反常现象的提出为提高煤炭港口设备利用率和煤炭在港周转率的研究开拓了新的途径。
[Abstract]:In recent years, with the increase of port throughput, people gradually realize the importance of port internal logistics efficiency to port development, especially the efficient transport of goods inside the port. It directly affects the storage of the port yard and the ship waiting ("pressure ship"), which has an impact on the overall operation efficiency of the port. The business process of the coal port is usually called three modules: 1) "order list" (2) stacking position selection and (3) technological route selection. Among them, the two modules of "order list" and "stacking position selection" have a direct and important influence on port turnover rate, while the choice of technological route has indirect characteristics on port turnover rate. But it is an important guarantee factor for the first two modules. In other words, the choice of coal transmission path in Hong Kong is an important guarantee to improve the coal port turnover rate. However, within the coal port, the choice of transmission path is a skilled type of work, which mainly depends on experience and has no theoretical basis to support it. The purpose of this paper is to provide theoretical basis for the choice of coal port transmission path, and to optimize the coal transmission path inside the port, so as to achieve the purpose of improving port turnover. Taking Qinhuangdao coal port as an example, this paper analyzes the problems existing in the process of coal transmission inside the port. It is found that there are all kinds of minimum or even maximum time constraints among the jobs, so this paper adopts the GPRs network model which includes the above time constraints. Based on the theory of GPRs network, this paper establishes the coal transmission path selection model, which provides the theoretical basis for the coal transmission path selection, and achieves the optimization of the coal transmission path in the port. Improve the rate of coal turnover and utilization of equipment in Hong Kong, and improve the comprehensive competitiveness of the port effect. In this paper, the method of transforming the path problem into the time problem is adopted, and the time constraint relationship among the processes is expressed accurately, which provides a new idea for the further research on the theory and application of GPRs network. Through the study of GPRs network of coal port transmission path, it is found that there are some abnormal phenomena which violate people's idea. For example, under certain conditions, when coal is removed from stacking place to berth, the number of feeder is reduced. The rate of coal turnover in Hong Kong remains unchanged. This abnormal phenomenon opens up a new way to improve the utilization ratio of coal port equipment and the rate of coal turnover in Hong Kong.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：F426.21

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