They are crucial in long-distance pipe jacking operations. Their main function is to relay the pushing force from the main jacking cylinder, overcoming soil friction resistance and extending the single jacking distance. The relay cylinders enhance the efficiency of thrust transfer, ensuring that the pipeline maintains a stable pushing force during continuous jacking, thereby accelerating construction progress and reducing downtime. Additionally, they feature excellent sealing and pressure resistance, allowing them to work stably under high pressure, ensuring the safety and efficiency of the pipe jacking operation.
In large-scale pipe jacking and microtunneling projects, where jacked pipes must travel long distances or navigate curved tunnels, Hydraulic Intermediate Jacking Cylinders (IJS) play a crucial role. Installed inside specially designed intermediate jacking stations (IJS), these cylinders provide additional thrust to overcome friction and ground resistance, ensuring smooth progress of the pipe jacking machine or micro tunnel boring machine (MTBM).
Typically used with AVN machines (where AVN stands for Automatic, Vortrieb, Nass in German, meaning automatic excavation under slurry-supported conditions), intermediate jacking enables the construction of longer and larger underground tunnels without compromising alignment, even in difficult soils. The soil cutting machines and slurry nozzles assist in reducing face pressure, while the hydraulic cylinders push forward from jacking shafts through jacking frames, maintaining continuous advance.
Whether for microtunneling, pipe jacking, or specialized size enlargement equipment, selecting the right hydraulic intermediate jacking cylinder is essential for managing dia tunnels of varying sizes and ensuring project success. Today, with increasing demands for mini tunnel boring machines, microtunneling machines for sale, and precision in tbm survey work, understanding the role of intermediate jacking is more critical than ever for modern tunnel boring machine operations.
