基于Petri网的地下洞室群交通运输系统模拟方法研究

Study on simulation method for traffic and transportation system of underground structure group based on Petri Network

通过应用Petri网的基本特性和一些扩展特性对地下洞室群交通运输系统进行建模,共建立了4个子模型,并编写了相应的计算机程序,解决了机械配套、交叉口忙期概率、装载机前和叉口处发生排队时的队长及其概率等问题。通过子模型的建立大大简化了系统仿真模型,提高了计算效率,降低了计算难度。

Based on the basic characteristics and some expansion characteristics of Petri network, the simulation method,consisting of four sub models, for the traffic and transportation system of underground structure group is established, which compiles the corresponding computer programs and solves the following problem： the reasonable scheme of equipment sets,the busy probability of the crossing spot therein, the queue length when automobiles are lined up in front of the loader or at the crossing spot. Through the sub models established, the system simulation model is largely simplified, which improves the calculation afficiencv and reduces the calculation difficulty concerned.