复杂三维地层模型地层划分研究

在三维地层建模中,地层界面由稀疏、离散的地质数据插值而成,正确的地质解释和空间分割的实现是处理这些曲面构建理想三维地层模型的前提,也是目前三维地质模型亟待解决的问题。引入地层层序序列和水平集理论可以有效地解决此问题。根据地层地质演变历史建立地层层序序列,此序列记录地层地质年代顺序及其＂覆盖＂和＂侵蚀＂两类拓扑关系。插值生成各种地质界面后,用水平集表达这些地质界面。根据地层层序序列,运用水平集的拓扑操作实现地层交叉划分,形成空间中严格按照地质演变历史为要素进行划分的三维地层模型。用python语言实现了该思想,实例表明是可行的。

Strata Partition in 3D Complex Strata Model

In 3D strata model setting-up the strata interfaces are interpolated by the sparse and scattered geological data.It is the basic premise of building realistic 3D strata model to processing these geological interfaces accurately by correct geological interpretation and spatial partition and also it＇s the difficult problems to resolve.It is a good idea to resolve these problems by using the concept of stratigraphic column and level set methods.A stratigraphic column,which records the chronological order of the strata and their either ＇onlap＇ or ＇erode＇ topological relationships,is defined in accordance with geological history.After interpolating geological interfaces,these interfaces are transformed into level sets.According to the stratigraphic column,the realistic three dimension strata model was formed in terms of geological history,by applying the topological operations of level sets to partitioning strata.It realizes by python and an example proved it feasible.