• Title/Summary/Keyword: Perpendicular layout

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Yard Design of the Container Terminal using the Simulation (시뮬레이션을 이용한 컨테이너 터미널의 장치장 설계)

  • 하태영;최용석;김우선
    • Proceedings of the Korea Society for Simulation Conference
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    • 2003.11a
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    • pp.35-40
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    • 2003
  • This paper presents a method for designing layout on the yard and evaluating alternative designs of the layout by applying simulation. The method is based on the concepts of the conventional port container terminal with a perpendicular yard layout. In general, yard design of the container terminal is consists of the two major parts. One is to divide yard area between the number of sections and the number of runs and the other is to decide the number of equipment that is the yard truck and yard crane. In the past days, this design was depended on the experience of the terminal operator and the structure of the conventional terminal layout because it is a very complex decision problem. In this paper we suggest the method of yard design as a conceptual procedure and estimate the efficiency of the container crane and the optimal the number of equipment using the simulation. Numerical examples are provided in order to illustrate the conceptual procedure. As the example, the suggested method and simulation are applied to the virtual container terminal with a perpendicular yard layout. In the results, the number of sections and runs on yard area, the number of yard truck per container crane and the number of yard crane per run are decided. In additional, the traffic among blocks on yard layout is estimated in terms of rate.

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A Study on Operational Efficiency Improvement of Perpendicular Layout Container Terminal via introducing Interchange Transport Model (수직형 자동화 컨테이너 터미널 운영 효율성 제고를 위한 인터체인지 이송 모델 도입 방안 연구)

  • Jang, Jae-Hwan;Lee, Jung-Yoon
    • Journal of Navigation and Port Research
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    • v.44 no.3
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    • pp.181-186
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    • 2020
  • Until now, the development of design and operation model for automated container terminals has been mainly performed based on the western ports model, specializing in basic loading, and discharging operations. In the case of the Busan port, terminal operators provide basic stevedoring, as well as an additional logistics service known as 'On Dock Service' not suitable for the currently commercialized automated container terminal model. This study diagnosed the current Busan port's throughput structure and terminal operational characteristic, and proposed a modified perpendicular layout container terminal transport model named 'Interchange Transport Model' for effective management of empty container and operation costs. Although the 'Interchange Transport Model' requires an additional number of transport equipment (AGV), concerning operational efficiency and cost saving, a simulation showed 22% reduction of TAT and 9.4% reduction of annual terminal operational costs in comparison to the basic perpendicular layout model.

A Comparison of the Efficiency of HSS Yard Layout at Container Terminal (HSS 컨테이너 터미널에서의 장치장 블록 배치 효율성 비교)

  • Ha, Tae-Young;Choi, Sang-Hei
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • v.1
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    • pp.345-352
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    • 2006
  • The purpose of this paper is to evaluate the efficiency of two yard layout of HSS at container terminal, one is that the container yard blocks are placed horizontally in parallel with berth, the other is that the yard blocks are arranged vertically in perpendicular to the berth. In stevedoring system of container terminal, stacking and transport performance are influenced according to block arrangement type of yard. Therefore, efficient design that can improve stacking and transport performance is required. In this paper, we compared their efficiency of two block arrangement concepts in terms of storage capacity, productivity, facility investments, truck service level.

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A Comparative Study on Productivity of Next Generation Quay Crane in Container Terminal (컨테이너 터미널의 차세대 안벽크레인 생산성 비교분석)

  • Ha Tae-Young;Choi Yong-Seok
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2004.11a
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    • pp.297-302
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    • 2004
  • This paper analyzed productivity of quay cranes on container terminal that have perpendicular yard layout block. In most existing container terminals, quay cranes of single trolley type are used to loading and unloading containers, but quay crane productivity of these type has many limitation about large size containership. For these reasons, recently quay cranes of various type that mn improve productivity are developed and as the representative example, dual trolley, double trolley, supertainer are developing. These cranes are realized that very high productivity bemuse their cycle time is short more than existent single trolley quay crane. Therefore, we analyzed productivity of these cranes that are realized by next generation crane alternatives and as result qf this research, mechaniml productivity by cycle time and net productivity by simulation were measured.

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A Comparative Study on Productivity of High Performance Quay Crane in Container Terminal (고성능 안벽크레인의 터미널 하역 생산성 비교분석)

  • Ha Tae-Young;Choi Yong-Seok
    • Journal of Navigation and Port Research
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    • v.29 no.6 s.102
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    • pp.547-553
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    • 2005
  • The purpose of this paper is to evaluate the quay crane productivity in automated container terminal with perpendicular yard layout. In particular, four quay crane (single trolley/dual trolley/double trolley/supertainer) are considered to evaluate the productivity on the terminal performance. Each quay crane load or unload containers by a different process. For each quay crane, two productivities are considered and compared: mechanical productivity, net productivity. As the net productivity of quay crane is significant, in this paper, an application of simulation model to simulate automated container terminal is developed and a wide variety of computational experiments were conducted.

Integrated Decision-making for Sequencing and Storage Location of Export Containers at a Receiving Operation in the Container Terminal with a Perpendicular Layout (수직 배치형 컨테이너 터미널 반입작업에서 수출 컨테이너의 작업순서와 장치위치 통합 의사결정)

  • Bae, Jong-Wook;Park, Young-Man
    • Journal of Navigation and Port Research
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    • v.35 no.8
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    • pp.657-665
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    • 2011
  • This study deals with an integrated problem for deciding sequencing and storage location of export containers together at its receiving operation in the container terminal with a perpendicular layout. The preferred storage location of an export container varies with the priority of the corresponding loading operation and the waiting time of an external truck depends on its storage time. This paper proposes the mixed integer programming model considering the expected arrival time and expected finish time of an external truck and the preferred storage location for its loading operation. And we suggest the heuristic algorithm based on a simulated annealing algorithm for real world adaption. We compare the heuristic algorithm with the optimum model in terms of the computation times and total cost and the performance of the heuristic algorithm is analyzed through a numerical experiment.

Influence of complex geological structure on horizontal well productivity of coalbed methane

  • Qin, Bing;Shi, Zhan-Shan;Sun, Wei-Ji;Liang, Bing;Hao, Jian-Feng
    • Geomechanics and Engineering
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    • v.29 no.2
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    • pp.145-154
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    • 2022
  • Complex geological conditions have a great influence on the mining of coalbed methane (CBM), which affects the extraction efficiency of CBM. This investigation analyzed the complicated geological conditions in the Liujia CBM block of Fuxin. A geological model of heterogeneities CBM reservoirs was established to study the influence of strike direction of igneous rocks and fault structures on horizontal well layout. Subsequently, the dual-porosity and dual-permeability mathematical model was established, which considers the dynamic changes of porosity and permeability caused by gas adsorption, desorption, pressure change. The results show that the production curve is in good agreement with the actual by considering gas seepage in matrix pores in the model. Complicated geological structures affect the pressure expansion of horizontal wells, especially, the closer to the fault structure, the more significant the effect, the slower the pressure drop, and the smaller the desorption area. When the wellbore extends to the fault, the pressure expansion is blocked by the fault and the productivity is reduced. In the study area, the optimal distance to the fault is 70 m. When the horizontal wellbore is perpendicular to the direction of coal seam igneous rock, the productivity is higher than that of parallel igneous rock, and the horizontal well bore should be perpendicular to the cleat direction. However, the well length is limited due to the dense distribution of igneous rocks in the Liujia CBM block. Therefore, the horizontal well pumping in the study area should be arranged along the direction of igneous rock and parallel plane cleats. It is found that the larger the area surrounded by igneous rock, the more favorable the productivity. In summary, the reasonable layout of horizontal wells should make full use of the advantages of igneous rock, faults and other complex geological conditions to achieve the goal of high and stable production.

Analysis of Combined Productivity at Automated Container Terminal Using Simulation (시뮬레이션을 이용한 자동화 컨테이너터미널의 결합 생산성 분석)

  • Ha, Tae-Yeong;Choe, Yong-Seok
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2004.05a
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    • pp.656-659
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    • 2004
  • The objective of this paper is to analyze the combined productivity at automated container terminal. We present a simulation model for transport vehicle that perform the container transportation between apron and yard with a perpendicular yard layout. Usually, the efficiency of container terminal is evaluated by productivity of container cranes at apron, and though there are enough support of transport vehicles and yard cranes, can improve the productivity of container cranes. Especially, transport vehicle is very important factor in productivity of container cranes and has variable work productivity according to loading and unloading situation. Therefore, a method that can estimate combined productivity of equipment is required. We performed various simulation experiment and analyzed combined productivity to estimate the required number of equipment.

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Simulation Model for Transport Vehicle on Automated Container Terminal (자동화 컨테이너터미널의 이송장비 시뮬레이션 모델)

  • Yang Chang Ho;Choe Yong Seok;Ha Tae Yeong
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2003.05a
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    • pp.1165-1170
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    • 2003
  • The objective of this study is to develop the simulation model of transport vehicle to analyze the required number of transport vehicle and to design the traffic pattern at automated container terminal. To model the transport vehicle, we defined the vehicle model and the traffic model using the state transition model of transport vehicle. An application of a simulation to simulate an automated container terminal with perpendicular layout is developed and described. From the results of simulation experiment, we obtained the vehicle speed and the number of vehicle under given productivity of container cranes, and analyzed the saving effect by cycle time.

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Performance Analysis of A Shuttle Carrier at Automated Container Terminal (자동화 컨테이너 터미널의 Shuttle Carrier 이송능력 분석)

  • Ha, Tae-Young;Choi, Yong-Seok
    • Journal of the Korea Society for Simulation
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    • v.14 no.3
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    • pp.109-118
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    • 2005
  • The purpose of this paper is to analyze transport ability of AGV(Automated Guided Vehicle) and SHC(SHuttle Carrier). The main difference between two types of transport vehicles is that AGV depends on container crane or transfer crane to do loading/unloading container, but SHC is very independent to it. Therefore, the transport ability of SHC is expected to be higher than AGV. So, in this paper, we established simulation model to evaluate two types of transport vehicles and analyzed the results. Simulation model was established to automated container terminal with perpendicular yard layout, and applied closed loop operation of transport vehicle between apron and stacking yard. In the result, SHC showed very superior than AGV aspect of container crane productivity and vehicle fleets.

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