数字地质多源数据库及三维建模方法研究

地质信息数据采集方法有地表信息采集的3S技术、地质勘察方法、电磁波CT、数字钻孔摄像技术和三维激光扫描等,所采集的地质数据具有不连续性、不确定性、不同来源或类型的数据可信度不同的特点。根据多种手段获取的地质信息数据的特点,进行数据单位归一、属性归类,建立统一的耦合数据库。采用表面模型与实体模型结合的混合模型,即采用表面图形和优化了的能对地质体内部空间属性实现描述的数据构造三维地质体,从而实现了三维图形的高效显示和三维交互式分析。

Research on the Digital Geological Multiple Source Database and 3D Modeling Method

The geological information data collection methods include 3S technology,geological prospecting method,electromagnetic wave CT,digital borehole camera technology and 3D laser scanning method.The geological data collected through these methods take the characteristics of discontinuity,uncertainty and varied data incredibility of different sources or types.Based on the characteristics of geological information data obtained through different methods,this paper aimed to unify their units and classifications so as to build a unified coupling database.We used a hybrid model of surface model and physical model,that is,to use surface graphics and the optimized data which can describe the interior space of geological body to form a 3D geologic structure,so as to realize the efficient display of 3D graphics and the 3D interactive analysis conveniently.