Abstract:In order to deepen the understanding of Jinan spring area, by using the existing drilling datas, geological maps, topographic maps and profile maps, through coupling of borehole datas, geological boundaries, DEM datas, fault datas and multisource datas, CAD design has been carried out to improve the spatial information of profiles, and drilling model, fault model, the level model of Jinan spring region have been set up. By using the Horizon tosolids method, the reconstruction of the entity model has been realized. Thus, final threedimensional geological model of Jinan spring protection has been finished. The model has realized comprehensive and integrated display of spatial information, depicted the complex spatial relationships between geological objects, solved geological spatial data query, analysis, calculation and management. It will provide a strong geological basis for the work of Jinan spring protection.