Pipe Jack Eye Mean?
A pipe jack eye is a sealing device located in the thrust pit and reception shaft to allow the cutter shield and product pipes to enter and exit the borehole without allowing lubricant slurry, soil or water to flow into the shaft.
Microtunneling and pipe jacking are trenchless construction techniques that allow for pipe installation beneath the ground surface without disturbing surface vehicular or pedestrian traffic. The operation can be carried out with two excavations at the entry and exit locations of the proposed pipeline.
Trenchlesspedia Explains Pipe Jack Eye
During microtunneling or pipe jacking operations, consideration has to be given to the stability of the ground surrounding the pipe jack eyes at the entry and exit locations. This can be achieved by pressure grouting, using gland assemblies or by dewatering. The machine is launched through the pipe jack eye at the entry pit and the product pipes are pushed in behind the machine. The process is repeated until the machine exits at the reception shaft.