基于CATIA的溶洞及裂隙带数字化建模技术研究

溶洞及岩溶裂隙带因其不规则的空间形态而成为地质建模中的难点。相较于其他建模软件,CATIA具有强大的曲面建模功能,可以在溶洞及岩溶裂隙带的建模中发挥作用。本文介绍了在CATIA上实现数字化地质建模的过程,包括数据处理和导入、地层与地质体模型的建立、溶洞及岩溶裂隙带模型的建立等。针对溶洞及岩溶裂隙带建模中的关键技术——“放样”做了分析和研究。分别采用不同的放样方式对代表两种类型的两处溶洞进行建模对比。应用上述技术建立了某一工程的地质模型,测算了溶洞及岩溶裂隙带的体积并进行对比,检验了模型的可靠性,实现了该工程的地质模型化和数字化,并阐述了依据溶洞及岩溶裂隙带数字化建模技术建立高质量模型的重要意义。

Research on Digital Modeling Technology of Karst Cave and Fracture Zone Based on CATIA

The karst cave and karst fracture zone have become difficult points in geological modeling due to their irregular spatial morphology. Compared to other modeling software, CATIA has powerful surface modeling capabilities that can be used to model karst caves and karst fracture zones. The process of implementing digital geological modeling on CATIA is introduced, including data processing and importing, establishment of stratum and geological body model, and establishment of karst caves and karst fracture zones. The key technology in the modeling of karst caves and karst fracture zones, “loft”, was analyzed and studied. Modeling and comparing two caves representing the two types of karst caves were carried out by different lofting methods. The geological model of a certain project was established by using the above technology. The volume of the karst caves and the karst fracture zone were measured and compared. The reliability of the model was verified, the geological modelling and digitization of the project was realized. The importance of digital modelling technology of karst cave and karst fracture zone to establish high quality models were explained.