三维地质界面建模关键算法研究

采用露头,钻孔以及地震等数据进行三维复杂地质界面建模,关键问题包括三维地质界面模型确定方法,地质界面接触关系处理方法。根据区块地质数据建立地质界面三角网格模型,处理地质界面之间复杂位置关系,为三维地质体建模提供约束面,清晰地描述并恢复地下构造。本文就三维复杂地质界面建模中的关键问题,提出基于几何拓扑关系的地质界面三角网格模型生成算法,地质界面空间位置判断算法。在算法中引入几何拓扑关系,降低算法实现的复杂性,增加算法实现效率。

The key algorithms research of 3D geological interface modeling

The key problems of three-dimensional complex geological interface modeling using outcrop, drilling and seismic data included 3D geological interface model determination algorithm, and contact relation processing data of geological interfaces. According the geological block data, geological interface triangular mesh model was set up, and the complex position relation between interfaces was dealt with, which provided constraint facets for 3D geological modeling, descried and restored underground structure clearly. About the key problems of 3D complex geological interface modeling, this paper provided a kind of geological interface triangular mesh model generation algorithm and space position processing algorithm based on geometric topology relation. Geometrical topology relation introduced in the algorithms, reduced the complexity of algorithm implementation and increased algorithm efficiency.