综采面系统Petri网动态模拟及应用研究

从系统工程的角度出发,将Petri网引入煤矿综采工作面的分析和模拟研究。在定性分析的基础上,开发了系统生产过程的模拟软件,并且达到了量化分析。针对综采工作面的特殊性质,通过对系统不同元件属性的分析,建立了综采面系统的Petri网最小事件发生集模型,以及综采面煤流运输系统的Petri网模型;在数学解析方法无法给出量化解析解的情况下,根据系统元件的运行状态服从某一特定的概率分布的特性,采用以时间步长法为主线,其中贯穿最小时间步长法的计算机随机模拟方法,动态地模拟出了综采面系统生产的整个过程,并得出元件和系统的有效度、停机率、煤流定量变化曲线、产量等一系列量化指标。本研究为客观分析综采系统提供了依据。

Petrinet System Dynamic Simulation of the Full Machanized Coal Face

From the point of the system engineering,Petri net is introduced to the analysis and simulation of the full mechanized coal face.Based on the qualitative analysis,the way for simulation software of the system production line is developed and the quantitative analysis is achieved.Based on the analysis of the special properties of the full mechanized coal face and the properties of the different parts in the system,minimum affair occurrence models are set up for the Petri net of the full mechanized coal face.The Petri net model for the workface transportation system is also set up in this paper.Based on the property that the operational conditions follow the movement appearance of a certain rate distribution,this paper dynamically stimulates the whole production process of the full mechanized coal face;a series of quantitative index which includes availability,shutting-down rate and fixed amount variation curve for coal flows,etc are drawn.