Lightweight dynamic model for fusion of three-dimensional surface-stratum underground structures

Area of Science:

• Geotechnical Engineering
• Geological Modeling
• Computer-Aided Design

Background:

• Intelligent geotechnical engineering requires integrated 3D visual modeling of surface, stratum, and structure.
• Heterogeneous data sources and modeling methods cause attribute incompatibility in current 3D models.
• Direct 3D modeling of surface-strata-structure remains a significant challenge.

Purpose of the Study:

• To develop a comprehensive method for creating integrated 3D models of surface, strata, and underground structures.
• To address the incompatibility issues arising from diverse data sources and modeling techniques.
• To enable lightweight and dynamic 3D modeling for geotechnical applications.

Main Methods:

• Kriging interpolation based on relative elevation for fusing borehole and surface data.
• Boolean difference set operations with bounding box method for geometric fusion of surface-strata-underground structure models.
• Variable storage method for attribute fusion of the 3D model.
• Layered rendering technology for lightweight processing and dynamic expression of 3D settlement models.

Main Results:

• A comprehensive 3D model integrating surface, strata, and underground structure data was established.
• A geometric fusion method and an attribute fusion method were successfully proposed and implemented.
• Lightweight processing and dynamic expression of the 3D settlement model were achieved using layered rendering.
• The method's feasibility and reliability were verified through engineering application analysis.

Conclusions:

• The proposed method simplifies the integration of surface, stratum, and structure models.
• This approach enhances the modeling of integrated engineering information in geotechnical projects.
• The developed lightweight 3D dynamic modeling technique is beneficial for practical applications.