Abstract: The geological model is the foundation of the transparent geological guarantee system and intelligent construction of mines. With the continuous improvement of national standards for the construction of intelligent coal mines, issues such as the storage, analysis, display, and dynamic updating of massive geological model data in mining areas have become one of the main problems hindering intelligent construction.In order to enhance the capabilities of rapid construction, efficient storage, and dynamic updating of geological models in the Shendong Mining Area, a dynamic updating technical system for 3D geological models integrating cross-platform, distributed storage, cloud collaboration, and 2D-3D integration has been studied and constructed based on multi-dimensional cloud GIS. This system integrates and collaboratively processes the geological model data of the three-level architecture of “mining area-mine-working face” in Shendong in a unified manner. It fuses multi-source geological data such as drilling, geophysical prospecting, and various plan and section diagrams under a unified geodetic coordinate system to construct the original geological models of geological survey elements such as multi-level coal seams, roadways, and geological structures in the mining area.At the same time, with the daily production activities of the mine, various new geological data are extracted by classification, and technologies such as spatial location analysis, expansion search, automatic interpolation, and boundary smoothing are used to correct the original geological model, continuously improving the accuracy of the geological model.The dynamic updating technical system of geological models based on multi-dimensional cloud GIS supports the storage and processing of geological spatio-temporal data on the TB scale. Through the modeling and management of geological attribute data related to GIS spatial locations, it can timely modify, add, and delete 2D and 3D data of mine maps, and simultaneously modify the geological model, goaf model, roadway topological relations, etc., ensuring the synchronization and consistency among the plan view, section view, and 3D geological model. It meets the requirements for the dynamic construction and application of geological models with various accuracies in the mining area, mine, and working face, providing important technical support for the construction of the transparent geological guarantee system and intelligent mines in the Shendong Mining Area.