| Coal and gas outburst presented obviously space-time and multidimensional complexity, describing dynamic evolvement process was used to infer and analyze the gas outburst according to gas outburst mechanism factor, factor weight and space-time sequence. Fuzzy Petri net spatial forecast modeling of gas outburst was presented, which thoroughly and systemically researched fuzzy Petri net model, architecture, rule description and dynamic inference of fuzzy spatial Petri net, realization of model system.Fuzzy Petri net spatial model of gas outburst was presented according to space distribution character of outburst diversified factor, and fuzzy description and spatial model of gas outburst were solved. The integration of fuzzy Petri net and gas outburst spatial forecast was researched. The component of fuzzy Petri net was extended integrating with space distribution character of outburst diversified factor. Lucubrating Fuzzy spatial representation of gas outburst, effect factor of gas outburst was represented by spatial model in the different spatial place.Spatial data mining of gas outburst based on workflow net was presented in order to realize the unification between spatial state factor and business flow modeling of gas outburst and to solve spatial model realization and spatial decision question. Workflow net based on Petri net was researched and spatial data mining architecture based on workflow net was presented by extending workflow reference model. Workflow net model of gas outburst was built combing with spatial forecast of gas outburst and key technology realization was analyzed from static and dynamic data mining.Fuzzy spatial Petri net was presented convenient for describing spatial dynamic association and dynamic reasoning and enhancing spatial describing universality of fuzzy Petri net. Gas outburst knowledge representation of different spatial distribution association was solved according to spatial effect factor distribution, which structures and meanings of state association effect component, transition association effect component and state association multi-valued threshold were illuminated in detailed. Knowledge representation of fuzzy spatial Petri net was researched in detailed and a dynamic reasoning algorithm with feedback was presented.Model System of gas outburst based on WF was built based on probing deeply into Petri net realizability, and program realizability of Petri net modeling for gas outburst was solved. Modeling and developing component of basic Petri net and fuzzy spatial Petri net were implemented based on Microsoft workflow foundation 4.0, and model verification system was built which could described rule reasoning and dynamic testing of fuzzy Petri net.
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