發(fā)布時(shí)間：2018-05-12 17:54

  本文選題：GPRs網(wǎng)絡(luò) + 反�，F(xiàn)象��； 參考：《華北電力大學(xué)》2013年碩士論文

【摘要】：近年來，隨著港口吞吐量的增加，人們逐步意識(shí)到港口內(nèi)部物流作業(yè)效率對(duì)港口發(fā)展的重要性，尤其是貨物在港口內(nèi)部的高效傳輸，直接影響到港口堆場(chǎng)庫(kù)存和船舶等待（“壓船”）等，從而對(duì)港口整體運(yùn)營(yíng)效率產(chǎn)生影響。 煤炭港口的業(yè)務(wù)流程通常被稱為三大模塊：（1）“點(diǎn)菜單”；（2）垛位選擇；（3）工藝路線選擇。其中，“點(diǎn)菜單”和垛位選擇兩大模塊對(duì)港口周轉(zhuǎn)率起著直接、重要的影響，而工藝路線的選擇雖然對(duì)港口周轉(zhuǎn)率的影響具有間接性的特征，但它卻是前兩個(gè)模塊執(zhí)行的好壞的重要保障因素，換句話說，煤炭在港傳輸路徑選擇的好壞是提高煤炭港口周轉(zhuǎn)率的重要保障。然而，在煤炭港口內(nèi)部，傳輸路徑的選擇是一個(gè)熟練工種，其主要依靠經(jīng)驗(yàn)執(zhí)行，并無理論依據(jù)作為支撐。 本文通過研究，旨在為煤炭港口傳輸路徑選擇提供理論依據(jù)，并優(yōu)化煤炭在港口內(nèi)部的傳輸路徑，，從而實(shí)現(xiàn)提高港口周轉(zhuǎn)率的目的。以秦皇島煤炭港口為例，分析煤炭在港口內(nèi)部傳輸過程中存在的問題。通過分析發(fā)現(xiàn)各作業(yè)之間存在著各種最小，甚至最大時(shí)間約束關(guān)系，所以本文采用了包含以上各種時(shí)間約束關(guān)系的GPRs網(wǎng)絡(luò)模型進(jìn)行分析。本文以GPRs網(wǎng)絡(luò)為理論基礎(chǔ)，建立了煤炭在港傳輸路徑選擇模型，從而為煤炭在港傳輸路徑的選擇提供了理論依據(jù)，并達(dá)到優(yōu)化煤炭在港口內(nèi)部的傳輸路徑，提高煤炭在港周轉(zhuǎn)率和設(shè)備利用率，以及提高港口綜合競(jìng)爭(zhēng)力的效果。 本文采用將路徑問題轉(zhuǎn)化為時(shí)間問題的思維方法，準(zhǔn)確的表示出了工序間各時(shí)間約束關(guān)系，為進(jìn)一步開展GPRs網(wǎng)絡(luò)的理論和應(yīng)用研究提供了新思路。通過對(duì)煤炭港口傳輸路徑GPRs網(wǎng)絡(luò)的研究，發(fā)現(xiàn)其中存在違反人們觀念的反�，F(xiàn)象，如：在一定條件下，在煤炭由垛位取出運(yùn)至泊位時(shí)，減少取料機(jī)的數(shù)量，煤炭在港周轉(zhuǎn)率不變。這種反�，F(xiàn)象的提出為提高煤炭港口設(shè)備利用率和煤炭在港周轉(zhuǎn)率的研究開拓了新的途徑。
[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.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：F426.21

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