Abstract: According to the virtual mine system applied to the available coal mine would be short of the high accurate geological modeling, integration of the monito ring and control data, early warning of the dangerous sources and others and have disadvantages that the geological survey data could not be upgraded and have profe ssion application.In combination with the mine dynamic mining features, the key technology of the virtual mine system of the mine was abstracted and sealed.A 3D engi ne framework faced to mine application was provided, the mine virtual mine system was rapidly and high efficiently established.The geological survey data could be upg raded dynamically with the space data engine.Meanwhile the paper introduced the 3D engine data storage and upgrading technology of the virtual mine.