中文摘要：

地质空间建模本质上是通过有限的地质空间数据，重构地质空间对象和格局，以恢复或模拟特定地质空间相关特征供人感知的过程和工具。从空间认识的角度分析讨论了地质空间的本质特征，提出了三维地质建模的5个技术层次结构、对应的模型层次划分和三维地质建模生命周期。实际应用表明，该体系结构能够有效支持地上地下一体化三维地质建模。这将有助于多维地质空间建模理论体系的建立与完善。

英文摘要：

The geological space modeling is essentially a procedure or tool used to reconstruct the geolog-ical space objects and space layout based on limited geological space data in the purpose of restoring or sim-ulating some specific geological space characteristics which can be perceived. In this paper, the essential characteristics of the geological space were discussed in an aspect of space cognition; five geological model-ing technique levels as well as the model levels corresponding to the five technique levels. The life cycle model of the geological modeling was proposed. The practical applications showed that the geological mod- eling system proposed in this paper could effectively support the requirement of the integrated modeling in the geological and geographical space. The research results will contribute to the construction and im-provement of the theoretical system of the multi-dimensional geological modeling.