三维地理场景下基于地质特征的数字露头空间检索方法

数字露头技术已成功应用于地质研究，海量的地质露头模型与资料管理成为了技术难题。传统的信息管理方式，如文件夹管理、信息系统管理等，都无法直接获取露头的空间位置，也无法从空间位置直接检索到露头。针对这个问题，运用SuperMap灵活的空间检索功能，提出了一种在三维地理场景下基于地质特征的数字露头空间检索方法，将野外勘测获得的照片、扫描所建立的三维模型、文字信息记录、位置等多种类型的资料纳入到空间数据库中，结合数字高程模型和遥感影像搭建三维地理场景来模拟现实地形地貌，实现从空间定位、地层地质、构造地质、岩相古地理、含油气盆地、岩性等空间与属性综合的露头信息检索管理。并运用SuperMap iObjects.NET 10i和C#.NET技术，在三维地理场景下实现基于地质特征的数字露头空间检索方法，搭建数字露头空间检索引擎平台，且对比传统信息管理方式，综合评价其更占优。

Spatial retrieval method of Digital Outcrop based on geological features in 3D geographical scene

Digital outcrop technology has been successfully applied to geological research. The management of huge amount of geological outcrop models and information has become a technical challenge. The traditional information management methods cannot directly obtain the spatial location of outcrops and retrieve the outcrops directly from the spatial location, such as folder management and information system management. To address this problem, we proposed a spatial retrieval method for digital outcrops based on geological features in a 3D geographic scene with the help of SuperMap''s flexible spatial retrieval function. We incorporated many types of information into the spatial database, such as photographs obtained from field surveys, 3D models created by scanning, textual information records, and locations. We also combined digital elevation models and remote sensing images to build 3D geographic scenes to simulate realistic topography and geomorphology. Applying this method to it, we realized comprehensive retrieval management of outcrop information from multiple spatial and attribute information aspects, such as spatial positioning, stratigraphic geology, tectonic geology, petrographic paleogeography, hydrocarbon-bearing basins, lithology, etc. In a 3D geographic scenario, we have implemented the digital outcrop spatial retrieval method based on geological features using SuperMap iObjects.NET 10i and C#.NET technology. We compared this method with traditional information management methods. According to the comprehensive evaluation, it was more advantageous.