基于水文剖面的三维地质建模方法

鉴于剖面是水文地质中常见的、有价值的数据形式,提出了基于水文剖面的三维地质建模方法,即"剖面信息提取",并给出了建模步骤.分析了基于剖面建模应该注意的问题和需要的预处理.详细介绍了剖面概化、二维剖面映射到三维空间、建立背景网格以及校正错误剖面信息的方法.设计了一种"顶面-尖灭线-透镜体"的三步建模法构建透镜体模型,该方法使复杂的多值建模问题转化为单值建模问题.描述了单值层面和透镜体的建模算法.最后给出应用实例,证明了基于剖面建模方法的有效性.

Three-dimensional geological modeling based on hydro sections

Since section is a common and valuable data model,a novel modeling method based on sections was proposed,namely "section information extraction",and modeling steps were presented.The matter to which attention should be paid and necessary preprocessing before modeling based on sections were analyzed.Methods of section generalization,section mapping from the space of two-dimension to that of three-dimension,building background grid of section information and correcting error section information were introduced.A novel method of "top surfacepinch out line-lens" was applied to reconstructing lens model,which converted the complex multiple-valued modeling to single-valued modeling.Then modeling algorithms of single-valued layer and lens were described respectively.At last,an application example was shown,which proved the efficiency of the modeling method based on hydro geological sections.