Standard Intermediate Jacking Stations
Intermediate Jacking Stations (IJSs) as inserted in the tunnel string at appropriate intervals to enhance and distribute thrust loads and facilitate longer drives. IJSs are designed to match a project’s exact pipe outside diameter. IJSs are custom built to match common RCP, steel casing, or CCFRPM pipe joints.
An IJS is recommended when the thrust pressure reaches one‐third of the pump unit’s maximum pressure capacity or half of the IJS thrust capacity. The IJS assembly comprises a non‐recoverable steel housing with multiple ram segments that each exerts additional thrust and is positioned on the steel housing’s interior ring.
IJS cylinders are controlled by the pump unit operator with a line holder cable, connected to hydraulic hoses and spool valves in the tunnel. IJS function can also be controlled through the ABIS system Monitor for automated injection.
FEATURES:
- Used to extend drive length by distributing thrust load for longer drives.
- Sealed to prevent ground intrusion into the tunnel.
- Non‑recoverable steel housing with multiple ram segments, each exerting additional hydraulic pressure.
- Customized to match the outside diameter of the project pipe.
SPECIFICATIONS
Print This Page| Length of Stroke Cylinders | Qty. of Thrust Rams | Capacity Per Ram @ 8,000 psi |
|---|---|---|
| 7‐in. | 5‐18 Segments | 55 tons |
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I have spent the majority of my career working in the trenchless construction industry. This has allowed me to work with Akkerman equipment and personnel, from field level all the way to my current General Manager role with The Tunneling Company USA, LLC. I have always found their equipment and their employees to be capable and up for the challenge. Whether it is working in the torturous climates or meeting urgent timelines, Akkerman can be relied on to help us achieve our goals.