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长期以来,对列车在井底车场的运行状态未进行过详细分析与讨论。现行井底车场设计,未将列车驶入车场(输入)与列车卸载(输出),建立起相互影响、相互联系、相互制约的关系。 本文在现场统计与实测的基础上,以排队论作为分析的出发点,对列车运行状态进行了模拟与分析,其目的在于:通过列车运行状态的分析及排队系统运行效率的研究,初步探讨影响井底车场生产能力的有关参量,如:分析列车进入井底车场的分布;卸载站服务时间的分布,并确定服务强度ρ;输入流不均匀系数KS;空、重车场储车系数K等。从而估计井底车场的服务质量,确定系统是否合理,并可确定系统的最优参数。 我们认为评定井底车场运行状态质量好坏的指标应是: 1.列车等待系数:PW=WS/TA(等待时间/间隔时间); 2.井底车场的服务强度:p=TS/TA=λ/μ(卸载时间/间隔时间); 3.经济价值系数:V=M/m(创造价值/消耗费用)。
For a long time, no detailed analysis and discussion have been carried out on the running status of the train at the bottom of the well. The current underground bottom yard design, the train did not enter the yard (input) and the train unloading (output), the establishment of mutual influence, mutual relations, mutual restraint relationship. On the basis of on-site statistics and measurement, this paper takes queuing theory as the starting point of analysis and simulates and analyzes the running status of train. The purpose of this paper is to analyze the train running status and the research on the running efficiency of the queuing system, The relevant parameters of the production capacity of the bottom depot, such as: the distribution of the train entering the bottom of the well; the distribution of the service time of the unloading station, and the determination of the service strength ρ; the nonuniformity of the input flow KS; the storage coefficient K of empty and heavy depots. So as to estimate the quality of service at the bottom-end yard, determine whether the system is reasonable, and determine the optimal parameters of the system. We think that the indicators for judging the quality of underground parking lot should be: 1. Train waiting coefficient: PW = WS / TA (waiting time / interval time); 2. Service intensity of bottom hole yard: p = TS / TA = λ / μ (unloading time / interval time); 3. Economic value coefficient: V = M / m (to create value / cost).