Research and Application of BIM Technology in Baolan Ke Special Line Shigushan Tunnel
Introduction
The Baolan Passenger Dedicated Line Shigushan Tunnel Project leverages railway tunnel BIM technology to establish multiple specialized libraries for tunnel engineering. This enables seamless information sharing throughout the entire lifecycle of railway tunnel construction. Additionally, it supports remote monitoring of tunnel safety through advanced monitoring, measurement, geological prediction technologies, and 4D-based construction organization and management. The project also addresses complex geological 3D modeling challenges.
1. Project Overview
The Shigushan Tunnel stretches 4,330 meters and is designed as a double-track tunnel. Situated on the south bank of the Weihe River in Baoji City, the tunnel traverses the loess plateau, an area characterized by significant terrain variation with a relative height difference of 142 meters. The tunnel passes through three major valleys.
Through research and application of BIM technology for railway tunnels, this project has developed various professional engineering libraries. It facilitates information sharing and remote safety monitoring throughout the railway tunnel’s lifecycle and has laid the groundwork for the “Baolan Passenger Dedicated Line Shigushan Tunnel BIM Collaborative Management Platform.”
2. Key Steps
2.1 Geological Model Based on BIM
A layered geological model was created using all geological data stored in the geological database, including spatial locations and geological attributes. This model integrates with tunnel design results, and through secondary development, the 3D geological model’s accuracy is continuously optimized to meet tunnel construction drawing requirements. Taking into account software capabilities, modeling needs, construction simulation, and operation and maintenance, the project aims to shift from 2D to data-driven, information-rich 3D models.
2.2 BIM-Based Construction Management
The 3D construction drawing model was developed using various tunnel section types from the design phase. Components for tunnel modeling were established to enable comprehensive 3D tunnel modeling. Research into popular BIM software platforms, enterprise solutions, and application interface technologies both domestically and internationally supported the delivery of construction drawings for the Shigushan Tunnel using BIM technology.
The 4D concept for construction organization and management includes several research areas:
- Standards for creating construction BIM models;
- BIM technology project management systems;
- 3D visualization methods for construction site disclosure;
- Establishment of BIM models for temporary facilities and engineering quantity statistics;
- Simulation of construction processes and method transitions;
- Application of 3D geological models in construction safety and quality control.
Construction safety technology integrates tunnel construction safety methods such as surrounding rock measurement, settlement monitoring, and advanced geological prediction with BIM technology. This combination enables visual dynamic simulations of tunnel construction and supports real-time monitoring and measurement. Advanced geological forecasting further enhances the 3D geological model accuracy for tunnel construction drawings.
For construction site visualization, a video monitoring center was established within the project department to capture real-time dynamic information of on-site construction. This data is accessible via the network, enabling remote viewing of construction progress. An electronic construction operation manual was created to facilitate 3D visualization technology disclosure, providing a clear, stereoscopic representation of detailed structural components and showcasing BIM technology’s “what you see is what you get” advantage.
2.3 BIM-Based Project Management System
Effective use of tunnel BIM models requires a comprehensive management platform. The “Baolan Ke Zhuan Shigushan Tunnel BIM Collaborative Management Platform” includes functional modules such as safety management, progress tracking, document management, construction logs, construction technology, cost management, BIM model information, system settings, basic configuration, and personal affairs.
The platform also features process management modules covering project overview, corporate culture, construction progress, electronic logs, technical disclosures, safety education, monitoring and measurement, rock measurement alerts, advanced geological forecasts, machinery, equipment, personnel management, and engineering quantity statistics.
3. Conclusion
The application of BIM technology in the Shigushan Tunnel project transformed tunnel design from traditional 2D methods to advanced 3D and 4D models. This shift significantly enhances visibility, coordination, and operational efficiency, enabling timely detection of conflicts, rapid problem resolution, and improved workflow.
The successful research and application of BIM technology in railway tunnels demonstrate promising results. With ongoing promotion and adoption across the railway industry, it is expected that comprehensive lifecycle management of railway engineering design, construction, and operation will be realized in the near future.
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