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地质界线要素是地质图空间数据库的基本要素之一。地质界线图层通常是地质图空间数据库中图元最多的一个图层,其数字化和质量检验工作较为繁重。针对已有地质体面图层,而地质界线图层缺失的情况,本文提供一种快速补充地质界线图层的方法。该方法也可对原生地质界线图层进行属性数据的自动化质量检验。其主要处理环节包括:首先,基于地质体面图层,构建地质体邻接关系图,可实现对地质界线高效、准确地提取;其次,基于产状数据与断层数据,运用地层接触关系识别规则,可分别实现对基本地层接触关系和断层接触关系的自动识别;最后,针对两邻接地质体面实体多段界线间的接触关系识别结果不一致的情形,运用“平行不整合优先”原则和“长度优先”原则,进行了合理的综合判别。基于1:50 000庐山幅地质界线图层的自动化生成实验表明,本文方法可高效、快捷、准确地生成地质界线图层,既能够满足自动化补充地质界线图层的需要,又可作为检验地质界线图层属性的有效工具。
The geological boundary element is one of the basic elements of the geologic map spatial database. Geological boundary layers are usually the most primitive layers in the geologic map spatial database, and their digitization and quality inspection are more complicated. In view of the existing geological decent layers, and the lack of geological boundary layers, this paper provides a quick way to supplement the geological boundary layer. This method also allows automated quality checking of attribute data for native geological boundary layers. The main processing steps include: Firstly, based on the geologic body layer, construct the geologic body adjacency relation diagram, which can extract the geologic boundary efficiently and accurately. Secondly, based on the formation data and the fault data, Respectively, to realize the automatic recognition of the contact between the basic formation and the contact of the fault. Finally, according to the inconsistent results of the recognition of the contact relationship between the boundaries of two adjacent geological body entities, the principle of “parallel underconsistency ” and “” "Principle, a reasonable comprehensive discrimination. The experiment of automatic generation based on 1:50 000 Lushan geological boundary layer shows that this method can generate geological boundary layer efficiently, quickly and accurately, which not only can satisfy the need of automatically supplementing the geological boundary layer, but also can be used as a tool to check the geological boundary Effective tool for layer properties.