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首页> 外文期刊>Computers & geosciences >Reasoning about geological space: Coupling 3D GeoModels and topological queries as an aid to spatial data selection
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Reasoning about geological space: Coupling 3D GeoModels and topological queries as an aid to spatial data selection

机译：地质空间推理：耦合3D GeoModel和拓扑查询以辅助空间数据选择

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摘要

Topological relationships between geological objects are of great interest for mining and petroleum exploration. Indeed, adjacency, inclusion and intersection are common relationships between geological objects such as faults, geological units, fractures, mineralized zones and reservoirs. However, in the context of 3D modeling, actual geometric data models used to store those objects are not designed to manage explicit topological relationships. For example, with Gocad~© software, topological analyses are possible but they require a series of successive manipulations and are time consuming. This paper presents the development of a 3D topological query prototype, TQuery, compatible with Gocad~© modeling platform. It allows the user to export Gocad~© objects to a data storage model that regularizes the topological relationships between objects. The development of TQuery was oriented towards the use of volumetric objects that are composed of tetrahedrons. Exported data are then retrieved and used for 3D topological and spatial queries. One of the advantages of TQuery is that different types of objects can be queried at the same time without restricting the operations to voxel regions. TQuery allows the user to analyze data more quickly and efficiently and does not require a 3D modeling specialist to use it, which is particularly attractive in the context of a decision-making aid. The prototype was tested on a 3D GeoModel of a continental red-bed copper deposit in the Silurian Robitaille Formation (Transfiguration property, Quebec, Canada).
机译：地质对象之间的拓扑关系对于采矿和石油勘探具有重大意义。的确，邻接，夹杂和相交是诸如断层，地质单元，裂缝，矿化带和储层等地质对象之间的常见关系。但是，在3D建模的上下文中，用于存储这些对象的实际几何数据模型并未设计为管理显式拓扑关系。例如，使用Gocad®软件，可以进行拓扑分析，但是它们需要一系列连续的操作，并且很耗时。本文介绍了与Gocad〜©建模平台兼容的3D拓扑查询原型TQuery的开发。它允许用户将Gocad〜©对象导出到数据存储模型中，该模型可规范对象之间的拓扑关系。 TQuery的开发旨在使用由四面体组成的体积对象。然后检索导出的数据，并将其用于3D拓扑和空间查询。 TQuery的优点之一是可以同时查询不同类型的对象，而不必将操作限制在体素区域。 TQuery允许用户更快，更有效地分析数据，并且不需要3D建模专家来使用它，这在决策帮助的情况下特别有吸引力。原型在志留纪罗比塔尔地层（变容财产，加拿大魁北克）的大陆红层铜矿床的3D GeoModel上进行了测试。

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