Construction method and evolution mechanism of mine digital twins

A deep integration of new generation information technology and mining technology will provide key technical support for the technological development of intelligent mines，and will promote the innovative，green，safe and efficient development of the coal industry. As a key intelligent technology for unmanned coal mining，digital twin is an organic combination of artificial intelligence theory and digital technology. Digital twin is expected to solve the key technical problems of interaction and common intelligence between the physical world and the information world in intelligent unmanned coal mining. It is of great significance to promote the intelligent construction of the whole life cycle of the mine and the high⁃quality development of the coal industry. Based on the digital twin technology and parallel intelligence theory，the conceptual framework，architecture，key technologies，basic theory and construc⁃ tion method system of mine digital twin are proposed. A theoretical model of mine digital twin evolution with physi⁃ cal model，simulation model，mechanism model and data model coupled is presented. Based on this，the construction and evolution process of digital twin model for mine intelligent mining application scenario is further analyzed，and the synchronous mapping and co⁃evolution mechanism of mine digital twin system are studied. The evolution mechanism of mine digital twinning is discussed and revealed. Finally，taking the practical application of digital twin in intelli⁃ gent mining face as an example， by simulating the evolution and cooperative control of the digital twin model in the mine production scene，the effect of the digital twin model in the intelligent mining scene is verified and its tech⁃ nical characteristics are analyzed，as well as the mine digital twin system model combining description，modeling，evo⁃ lution and prediction is realized. This paper aims to provide theoretical guidance for the application of mine digital twin technology through the connotation， method and new theoretical research paradigm of mine digital twin technology，and provide useful inspiration and reference for the future research of intelligent mine and the applica⁃ tion of industrial Internet in coal mines.