Pipe Jacking Shoring - Slide Rail

Coates Hire's Slide Rail Shoring System (from SBH in Germany) is perfect for projects with a combination of difficult conditions and can be used in most instances when conventional systems fail. The Slide Rail System is designed to handle deep trench excavations, close to existing buildings and adjacent to active roadways, without settlement. It is also good for use in soft ground conditions. This is important especially in ground conditions don't allow you to excavated to full depth prior to dropping in a conventional shoring/trench box. Always consult a Geotechnical Engineer for assessment of the ground conditions.

The Inner Track of the Double Slide Rail System has been modified to accept the inner panels without loading them from the top as in older systems. This feature improves installation time. The compact size and centre position of the ”H“ shaped rolling strut offers optimum working room during all operations. In every phase of the installation and removal process, the movable rolling strut is situated in such a low position that an excavator even with a short boom is always able to work free and unhindered. As you see - all along the line. This feature makes this system much easier to use than any double strut slide rail system. The unique rolling strut insures that opposing slide rails always remain parallel even when they are sliding past one another. Because of this, the slide rail panels can be installed easily even in deep cuts.

Soil movement outside the trench is minimised during the lining process. The horizontal soil movement which occurs when using conventional systems due to the shifting or tilting of slide rail panels during the lowering process is eliminated. The trench width remains constant during the entire excavation and back-fill operation.

The removal process is improved as well, and is just as problem-free as the installation. Much less pulling force is required to remove panels as compared to old style slide rail systems. There is no horizontal movement of the shoring and thus no pressure against the soil.

Step 1: This launch pit / pipe jacking task starts off by digging a pilot hole to 1.5m depth. The H frame post/strut is created on the ground before it's lifted into position.

Step 2: Shoring panels guided into the channel section in the post.

Step 3: After installing the panels, the end H frame can be attached.

Step 4: This system being an 'Dig & Push' process, required the contractor to excavate/undermine the soil under the panels whilst with the dig bucket pushing the panels to the required depth incrementally.

Step 5: The final panel or lower panel can be guided within the internal channel, this allows it to be pulled up to run a bore through and allows the extraction process take place in reverse order so the upper part of the shoring system continues to shore the excavation until it's the last panel to be extracted.