Pipe Bursting
Pipe bursting is a trenchless method for replacing underground pipelines with minimal surface disruption. The process begins with pre-construction planning, including site surveys, utility mapping, and obtaining necessary permits. Excavation of entry and exit pits follows, ensuring proper depth and alignment.
How it works:
Initial setup: A bursting head (a cone-shaped or cylindrical tool) is inserted into the old pipe through a small access point at each end of the pipeline.
Breaking the old pipe: The bursting head is pulled through the old pipe, using hydraulic or pneumatic force, breaking it apart as it moves forward. The fragments of the old pipe are pushed outward into the surrounding soil.
New pipe installation: As the bursting head moves through, it pulls a new pipe into place behind it. The new pipe is usually made of a more durable material (like HDPE – high-density polyethylene), which is resistant to corrosion and cracking.
Completion: Once in place, the new pipe is inspected for alignment and integrity before being connected to the existing system. The access pits are then backfilled, and the surface is restored. Finally, pressure and leak tests are conducted to ensure the system is functional before it is put into service.
One key benefit of pipeline bursting:
Minimized disruption to the surrounding area: Since trenchless bursting requires minimal excavation, there’s much less surface disruption compared to traditional open-cut methods. This is especially beneficial for urban environments or locations where preserving the landscape (such as roads, sidewalks, or landscaping) is important. It helps reduce traffic delays, damage to existing structures, and restoration costs.