A Q-GERT network model for the optimization of mining process of the fully-mechanized face

A Q-GERT(Queuing-Graphical Evaluation and Review Technique)network model for the optimization of mining process of the fully-mechanized face is developed based on the analysis of the technological process and the investigations on work hours of the common fully-mechanized face and fully-mechanized face with sublevel caving, and the effectiveness of the model, combined with queuing theory, is proved by the simulation result. By the application of the model, a new algorithm for the quantitative analysis of the best matching relation of each links in coal faces mentioned above is provided, and then the basis for the determination of the capacity matching of each links in fully-mechanized face is also provided in this paper.