Pipe Jacking
Pipe Jacking
Closed Sign
Pipe jacking enables the construction of sewers and pipelines with minimal disruption to, for example, inner-city traffic routes, thereby avoiding long traffic jams and contributing to a significant reduction in particulate matter and CO2 emissions.
Since this method requires only the removal of soil displaced by the new pipeline, this innovative construction method further significantly reduces construction site traffic and emissions compared to conventional open trench / open cut construction, and also conserves resources, as very few external construction materials need to be delivered.
These methods enable highly precise pipe laying over long distances using state-of-the-art electronic measurement techniques. The diameter ranges for pipe jacking start at the lower end of the range used in mechanical tunnel boring with tubbing lining. Existing software solutions make it possible to provide the client with real-time, online access to all relevant data regarding the tunneling process.
Procedure Description
Source: DWA-A 125 (Figure 11)
The tunneling pipes are driven from a launch pit to a target point—usually a target excavation pit—while the pipe string is continuously preloaded. At the same time, the soil is continuously excavated at the mechanically and fluid-supported working face. The material is conveyed using a slurry, which is treated by a Mud rig near the launch pit and returned to the conveying circuit. The process is controlled via control cylinders in the drill head, allowing for tunneling in a straight line or around curves.
Application Criteria
Microtunneling, Section 6.1.3.1, and Shield Tunneling, Sections 6.2.3.5 and 6.2.3.6
> 1.000 m
Vertical, horizontal, and spatial curves are possible; radii depend on pipe diameter and geology; R ≥ 150 m
Reinforced concrete, polymer concrete, fiberglass-reinforced plastic, stoneware
For sewer lines
| DN | vertical | horizontal |
| < 600 | +/- 20 | +/- 25 |
| > 600 bis < 1000 | +/- 25 | +/- 40 |
| > 1000 bis < 1400 | +/- 30 | +/- 100 |
| > 1400 | +/- 50 | +/- 200 |
Source: DWA-A 125 (table 10)
With this system, obstacles made of steel or reinforced concrete can only be removed by taking additional measures.
in all soils that have the required bearing capacity, including bedrock up to 200 MPa
Sewage pipes, protective pipes, utility tunnels
Crossing rivers, roads, highways, habitats, open areas, cuts in the terrain, narrow passages, and numerous intersecting utility lines.
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