Pipe Roofing Machine for Tunnel Construction
The pipe roofing machine employs trenchless construction technology to pre-support soil around a tunnel face. By building pipe roofs, it ensures safe excavation, particularly when tunneling under existing infrastructure.
Technical Specifications
Overview
Advanced Trenchless Tunneling Technology
This pipe roofing machine represents a specialized trenchless construction solution designed for pre-supporting soil on the periphery of tunnel faces. By installing a protective canopy of steel tubes before excavation, it ensures safe tunneling operations, particularly when passing beneath existing infrastructure like highways or railways. The system utilizes slurry balance technology for precise pressure control, effectively minimizing ground settlement during construction.
Technical Specifications
- Excavation Diameter
- 720 mm
- Machine Weight
- 63 t
- Installed Power
- 93 kW
- Nominal Torque
- 25 kNm
- Maximum Thrust
- 4000 kN
- Total Length (Shield + Back-up)
- 12 m
Performance Metrics
Daily Advance Rate
15 m
Average
18 m
Maximum
Operational Features
System Capabilities
- Composite cutterhead for complex geologies
- Retractable design for projects without reception shafts
- Slurry balance method for high-precision pressure control
- Automatic measurement system for posture feedback
- Articulation device for deviation correction
- Suitable Geologies
- Artificial fillClayMudstoneSandstone
Project Reference
Reference Project Data
| Parameter | Details |
|---|---|
| Project Name | Chongqing Railway East Loop Project |
| Machine Type | Pipe roofing machine with slurry support |
| Quantity Used | 3 units |
