Intelligent ground control at longwall working face

Intelligent ground control ( IGC) at longwall working face is the significant and key part in wisdom coal mine and mining intelligentization,and is the crucial link from trial-and-error ground control to precise ground control as well as from static control to dynamic control. IGC is one of the important research fields in ground control. The con- notation of IGC at longwall working face was defined,which is the ground control technology using modern information technology and artificial intelligent technology. The composition,perception and col-lection method and the utilization mode of coal mine data were analyzed. The coal mine data is used for big data analysis for evaluating ground control ef- fectiveness and coal mine disaster characteristics,providing learning samples and analysis objects for artificial intelli- gence models,and used as the reference object for back analysis of dynamic numerical simulations and information source for data visualization and virtual reality of mining process. The pathways of dynamic analysis and state distin- guish,real-time decision-making and control in IGC were proposed. The key scientific problems of IGC were clarified, that include the methodology and technology of perception and collection of coal mine data,the real-time rapid analysis of coal mine data,the intelligent model and algorithm of IGC,coal mine data visualization,the virtual reality for mining process,the principle and algorithm of rapid numerical simulation based on big data,and the algorithm integration and system construction for the whole process of IGC. Two specific IGC application cases on Support Vector Machine and Dynamic Numerical Simulation were introduced.