Pipe roofing machine
Inquire NowDescription
The Pipe Roofing Machine is an innovative trenchless construction technology designed to support soil on the periphery of tunnel faces by constructing pipe roofs. This state-of-the-art machine ensures safe excavation, especially in challenging environments like those intersecting existing highways or railways. Utilizing a pipe jacking technique, steel tubes are inserted into the ground, forming a protective structure that allows for secure tunneling operations.
Working Principles: The machine operates by jacking steel tubes into the soil from a launching shaft to a reception shaft. These tubes interconnect through lock mouths, creating a complete tube system. Waterproofing additives are then injected into the gaps to prevent water ingress, allowing for safe tunnel excavation under the protection of the pipe roofs.
Specifications
| Attribute | Details |
|---|---|
| Project | Chongqing Railway East Loop Project |
| Machine Type | Pipe roofing machine with slurry support |
| Geology | Artificial fill, clay, mudstone, sandstone |
| Machine Data | 3 * pipe roofing machines |
| Excavation Diameter | 720 mm |
| Length of Shield + Back-up | 12 m |
| Weight | 63 t |
| Installed Power | 93 kW |
| Nominal Torque | 25 kNm |
| Maximum Thrust | 4000 kN |
| Performance | Average daily advance rate: 15 m Maximum daily advance rate: 18 m |
Additional Information
Features of CRCHI’s Pipe Roofing Machine:
- Composite cutterhead capable of handling various complex geologies.
- Pull-out functionality allows for multiple uses and access to address obstacles.
- Slurry balance method for precise control of tunnel face pressure and reduced ground settlement.
- Automatic measurement system for accurate posture feedback.
- Articulation device for precise deviation correction and direction adjustment.
