地理与地理信息科学

三维地质建模是三维GIS在地学中的一个重要应用,三维地层模型对实际的地质分析极为有用。在综合前人研究成果的基础上,提出了一种由工程钻孔数据构建三维地层模型的方法。该方法以钻孔资料作为地层建模的源数据,具有简单实用、快速稳健的特点,并且能够将用户手工编辑修改的钻孔剖面图融入实际建模流程,解决了以往单纯依靠钻孔数据进行建模而导致的建模结果不精确且难以修正的问题。该文介绍了该方法的基本思想与实现流程,探讨了断层数据的加入对模型的影响及解决方案,并通过一个建模实例展示了该方法的实际建模效果。

As an important application of 3D GIS in geosciences,the 3D strata model takes a great role in the geological analysis.On the basis of the researches before,the authors present a novel method for reconstructing 3D strata model.The method,generating 3D strata models with borehole data,characterizes simpleness,practicality and speediness.It also can deal with the user-defined cross-sections,which solve the problem of imprecise or unmodifiable modeling that caused by only using borehole data.This paper introduces the principle and workflow of this method,discusses the effect of fault and gives an approach to the modeling fault in 3D.Finally,the practical effect of this method is shown in a case study.