层状地质体的三维模拟与可视化

THREE DIMENSIONAL MODELING AND VISUALIZATION FOR STRATIFIED GEOLOGICAL OBJECTS

文中探讨了层状地质体的三维模拟与可视化方法和技术。地质数据通常是有限的、空间上分布不均匀的点数据 ,需要大量使用插值技术来形成合理的模型。简单层状实体可在二维插值的基础上 ,按照这些面的空间位置叠加 ,形成三维体模型。复杂的层状体包括沉积相以及一些物性参数的空间变化 ,断层等形成的不连续以及复杂的褶皱等。这些实体的模拟与可视化 ,需要进行三维插值 ,并根据不同现象的特点选择合适的方法。合理的专家知识或地质解释的交互加入 ,是形成合理的三维模型的关键。

This paper describes methods and techniques for 3D modeling and visualization for stratified geological objects. Geological data usually are limited,at irregularly distributed points data,which require utilizing spatial interpolation to produce reasonable 3D geological models. For simple stratified objects,3D model can be produced by correctly arranging those well interpolated surfaces according to their spatial locations. Complex geological stratified objects include spatial variations of sedimentary facies and some physical/chemical properties,discontinuities caused by faults,erosions and folds. Three dimensional interpolation methods are required for these complex objects. The appropriate modeling and visualization methods are chosen for different phenomena. The key to produce correct 3D model is to incorporate expert knowledge and right geological interpretation in modeling and visualization procedure.