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《铁道运输与经济》2020,(10)
驼峰解体作业过程是车列在编组站作业的重要环节,对车列在编组站停留时间影响较大。为提升铁路服务水平,提高车列在编组站的作业效率,满足托运人对运输时效性的要求,基于排队论理论构建解体系统"有中断服务的M/En/1"排队论模型,并采用有色Petri网的排队系统仿真模型对车列在驼峰解体过程中的作业指标值进行验证。结果表明:应用排队论得到的结果与仿真结果的最大、最小值的差值在95%的置信区间内,车列在解体系统内平均停留时间为56.9min,该结果与实际作业情况基本符合,验证了编组站有中断服务的驼峰解体作业过程模型的有效性,具有一定的创新性,为提高车列在编组站作业效率提供理论依据。 相似文献
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折角车流,是指从车站一端到达,经过车站的改编作业后,仍然从车站同一端出发的车流。在成都北编组站这样具有双向系统的编组站,从同一端进出的车流需要从一个系统转到另一个系统才能出发,因此,折角车流在具有双向系统的编组站需要进行重复解体和集结。随着折角车流数量的增长,成都北编组站的技术作业效率也在逐渐降低。因此,分析折角车流对成都北编组站作业效率的影响并提出相应的处理对策很有必要。 相似文献
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通过着重研究禁溜车、整场作业、溜放长大空车组对编组站驼峰解体能力的影响,针对太原铁路局编组站驼峰作业存在的问题,提出提高禁溜车作业效率和整场作业效率等具体措施。说明对于编组站驼峰解体作业必须结合站场调速设备、地理位置、自然条件、车流特点和均衡性,以及调车人员素质,制定相应的解决办法,从而有效提高驼峰调车作业效率。 相似文献
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铁路编组站自动化概述 总被引:5,自引:0,他引:5
以成都北编组站综合集成自动化系统为例,指出自动化编组站应具有共享数据平台、调度决策指挥自动化、作业过程控制自动化、信息管理自动化等多项功能,并通过对编组站自动化与驼峰自动化 TMIS 进路联锁控制两种自动化模式的比较,说明在主要岗点设置、人员配备和作业效率等方面,编组站自动化系统的先进性。 相似文献
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针对多方向编组站的特点,以重庆枢纽新建兴隆场编组站设计为例,提出从改进编组站交换场、编组场、到发场、机车走行线和机务段设置,调整编组站到、解、集、编、发系统功能分工,疏解车站两端咽喉联络线布局等方面入手,改善多方向编组站的设计配置,减少多方向车流在编组站接发列车、调车作业中的相互交叉干扰,有效提高编组站的运输效率。 相似文献
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编组站到发线运用计划是编组站阶段计划核心工作之一,以适度降低现阶段人工编制计划工作量为切入点,将影响到发线运用计划分配优先级条件与干扰条件融入到发线占用资源分配优化模型中,设计股道分配规则,兼顾股道占用唯一性、均衡性等约束,以股道调整次数最少为目标,基于萤火虫算法,辅以计算机技术将其嵌入到现有的编组站调度自动化系统中对模型进行有效性验证及测试。通过选取国内某编组站一班次实际作业数据进行分析验证,实验结果表明,该模型其作业效率比常规未考虑股道优先级和股道干扰条件的自动编制方案作业效率提高近2倍,比人工编制方法效率提高近4倍,大大减少人工调整的次数,减轻作业人员的劳动强度,提升编组站运输生产效率,推动铁路调度智能化发展。 相似文献
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Recently, a record number of passengers have entered and exited Taiwan from Taiwan Taoyuan International Airport (TTIA). The number of passengers from Taiwan to mainland China has increased largely because of the improvement of cross-strait cultural interaction and other policies, as well as the opening of direct flights. Not only located in the transport hub of the East Asia Taoyuan International Airport is becoming more important and can provide 24 h Airport service, but also airport immigration officers must take 24 h shift to carry out the passenger document inspection requirement, Immigration officers can be fatigued by long shifts, thus negatively affecting border security clearance efficiency and work performance. Consequently, innovative management practices regarding immigration officers are necessary to strengthen international cooperation against terrorism. This study used system simulation Delphi interviews and a heuristic algorithm to determine the required number of airport immigration officers during a fixed passenger waiting time, for improving the efficiency and stability of airport immigration officers who work to consolidate the border security of the country. The results showed that the utilization of airport immigration officers at Taiwan Taoyuan International Airport is higher than 97.99%, and their work hours have been reduced by more than 54.68%. These results proved that using a system simulation can reduce long work shifts and negligence, which can lead improved border security and airport service quality. Additionally, the simulation results that when the National Immigration Agency and Taiwan Taoyuan International Airport implement the biometrics verification system for noncitizens, significant manpower shortages are expected. These shortages can cause complaints from customers and result in a negative image of the quality of airport service. Assigning priority to setting the E-GATE system to compensate for the lack of immigration officers would result in more efficient and effective border security. 相似文献
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王山勇 《铁道部郑州公安管理干部学院学报》2007,17(2):5-12
三大体系是工作规范体系、绩效评估体系、奖惩激励体系的总称,是铁道部公安局为推动铁路公安机关正规化建设,以公安部“三基”建设为契机,迎合现代警务改革的一项重要举措。从三大体系建立的背景、依据出发,探讨三大体系建设的意义以及各体系的内涵、地位和作用是文章的要义所在。 相似文献
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总结2007年上半年全国铁路运输安全工作,分析下半年运输安全工作形势,动员全路全力推进提速安全保障体系建设,认真研究解决提速安全中的突出问题,扎实推进各项安全专项重点工作,确保提速持续安全稳定,推进和谐铁路建设. 相似文献
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铁道部经济规划研究院铁路工程定额所 《铁道经济研究》2007,(4):39-42
回顾铁路工程造价标准体系形成过程,阐述按照"建设前期、工程交易期、工程实施期"三阶段实现铁路工程全过程造价管理的主要内容,分析"编制办法开放稳定,工程定额动态管理,价格信息及时发布,前期后期有机衔接"是完善铁路工程造价标准体系的关键,为实现铁路建设投资有效控制打好基础. 相似文献
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统计信息化是统计工作在信息化背景下发展的必然趋势,是企业发展的重要环节.阐述统计信息化的发展趋势和重要性,分析铁路勘察设计企业统计工作及统计信息化的现状,针对目前铁路勘察设计企业统计信息化存在的问题提出思考和建议. 相似文献
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铁路智能化调车系统的研究 总被引:2,自引:0,他引:2
铁路车站调车作业自动化是实现调度集中的基础,针对目前车站无线调车作业的现状和存在的问题,对智能化调车系统的组成、结构和功能进行了设计。并对系统技术方案进行了研究,主要包括信号采集方案、站场地理信息系统、信息处理系统和调车作业过程的智能化控制等。 相似文献
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A dynamic hazard-based system of equations of vehicle ownership with endogenous long-term decision factors incorporating group decision making 总被引:1,自引:0,他引:1
The transportation system affects all aspects of our daily lives including relatively long-term decisions on work and home location choice and automobile ownership decisions. The interdependency existing among these three decisions jointly influences household mobility and overall travel patterns. Therefore, a dynamic modeling framework that can account for the effects of interdependencies between vehicle transaction behavior and residential and job location choices is highly desirable. These decisions are made in the household level while individuals’ decisions influence the overall outcome; therefore, it is also important to incorporate a group decision making process within such modeling frameworks.This study introduces a dynamic model for vehicle ownership, residential mobility, and employment relocation timing decisions. These decisions are modeled at the individual level and then sequentially aggregated to the household level if it is required. A hazard-based system of equations is formulated and applied in which work location and residential location changes are included as endogenous variables in the vehicle transaction model while other important factors such as land-use and built environment variables, household dynamics, and individuals’ socio-demographics are also considered. 相似文献