中文摘要：

在简要介绍三维体元拓扑数据模型建模原理的基础上，分析了三维体元拓扑数据模型的不足，并从处理含夹层地质体和由非平行剖面构建地质体两个方面，改进了三维体元拓扑数据模型的建模条件和数据结构。实验表明，改进后的数据模型更加适合基于剖面的三维地质建模。

英文摘要：

After simply introducing the theory about the Component- based Topological Data Model for 3D Geology Modeling （3DGM）, the paper analyzed the model＇s deficiency in modeling conditions and dealing with the relationship between two geologic objects. And then, expands the conditions and optimizes the data structure of the model when appears two unparallel sections or some partings. The experiment result validates the optimized model is practicable.