BIM-based Drill-and-Blast Tunnel Information Modeling Framework

BIM Method for Integrated Management of Drill-and-Blast Tunnel Information Using a Hierarchical Framework Linking 5 IFC Data Models

This technology provides a tunnel information modeling framework and system where a framework configuration unit links drill-and-blast tunnel project data to multiple data models to create a BIM-based tunnel information model, and a project support unit manages tunnel processes and project information for each process using this model. The framework consists of a data source layer, multi-modeler, integration layer, analysis layer, and application layer.

IFC, the foundation of BIM, has primarily developed in the architectural sector, while research in civil engineering has focused on roads and bridges, leaving a significant gap in IFC expansion for tunnel construction. Existing IFC information exchange environments have also suffered from 3D object information loss and inaccurate data transmission. Drill-and-blast tunneling generates diverse data throughout the project lifecycle—such as borehole logs, geological maps, and blasting vibration records—which are still manually exchanged using traditional methods, limiting accurate information sharing among stakeholders.

In this technology, a multi-modeler links project data collected at the data source layer to five data models—ground surface/soil, drill-and-blast, geological rock, rock support, and concrete lining—to construct an IFC schema-based tunnel class. The data source layer collects geophysical surveys, drilling logs, blasting logs, ground vibration monitoring, and process/cost records across feasibility, design, and construction phases. Each model is divided into detailed classes such as rock bolts, shotcrete, wire mesh, lattice girders, and convergence monitoring points. Applicable to NATM mountain tunnels for roads and railways, blasting sections for subways and deep underground roads, and hydraulic power tunnels, it integrates scattered geological, blasting, and support data from investigation to completion, allowing clients, designers, and contractors to make face-mapping decisions based on the same information.

‍

‍

Key Features:

• A step of providing a BIM-based tunnel information model by linking drill-and-blast tunneling project data to a plurality of data models in a framework configuration unit
• A step of managing processes or project information related to a tunneling project through the provided tunnel information model in a project support unit
• A tunnel information modeling framework consisting of a data source layer, multi-modeler, integration layer, analysis layer, and application layer
• A plurality of data models including a ground surface/soil model, drill-and-blast model, geological rock model, rock support model, and concrete lining model

‍

This invention was developed with support from the Ministry of Science and ICT for a digital-twin framework for earthworks.

‍