三维地质建模及应用实例

Three-dimensional geological modeling and the application cases

文章介绍了实体模型、场模型和混合模型三类空间数据模型及其相应的三维地质构模方法,列举了三维地质构模在矿产资源评价、城市地质、地下水资源评价方面的3个应用实例。在矿产资源评价中的应用是实体模型与场模型的集成,三维显示与检索采用实体模型,资源量估算和矿化分布预测采用场模型;在城市地质中的工程地质层状地质体建模采用多层DEM构模法,介绍了基于三维地层模型的剖切等应用分析;地下水资源评价中含水层组的三维建模采用剖面构模法,以水文地质剖面为建模数据源,辅以钻孔、含水层组底界埋深等值线、地表高程等值线等作为约束条件。

This paper introduces three type spatial data models （the feature model, field model and hy- brid model） and their modeling methods. Three application cases are listed： （1） mineral resources evalua- tion mode; （2） city geological model; （3） underground water evaluation model. In mineral resources eval- uation mode the entity model and field model was integrated, three-dimensional entity model was used to display and retrieval , field model was used in reserve estimation and mineralization distribution predic- tion. In city geological model DEM modeling method was used to stratified geological; bodies in engineer- ing geology. In underground water evaluation model hydrogeological sections are the main data source and hydrogeological borehole data , contour lines of aquifer group bottom depths the constraints.