South Africa, Pipe Bursting and Cracking
Pipe Bursting and Cracking
Pipe bursting, also known as pipe cracking, is a trenchless method used for replacing
buried pipelines without the need for extensive excavation. It’s often employed when
traditional methods of pipeline replacement are impractical or too disruptive.
Pipe Bursting and Cracking
Our well trained operators uphold the highest standard of Trenchless Technology services, specialising in Big Bore pipelines for example: Optic Fibre services, Sewer, Water and Electricital conduits.
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PIPE BURSTING / CRACKING
Pipe bursting, also known as pipe cracking, is a trenchless method used for replacing buried pipelines without the need for extensive excavation. It’s often employed when traditional methods of pipeline replacement are impractical or too disruptive.
Pipe bursting is commonly used for replacing various types of underground pipelines, including water, sewer, and gas lines. However, it may not be suitable for all situations, such as when existing pipe materials are unsuitable for bursting or when there are significant obstacles in the path of the new pipeline.
Benefits
Reduced Disruption:
Since it doesn’t require extensive trenching, pipe bursting minimizes disruption to surface infrastructure, traffic, and landscaping.
Faster Installation:
The process is generally quicker than traditional excavation, reducing the time required to complete the pipeline replacement.
Cost-Effectiveness:
While the initial equipment costs may be higher, pipe bursting can often be more cost-effective overall due to reduced labour and restoration expenses.
Minimal Environmental Impact:
Because it minimizes soil disturbance and surface disruption, pipe bursting is often considered more environmentally friendly than traditional excavation methods.
Here's how the process generally works:
Preparation
First, access pits are dug at each end of the section of pipe to be replaced. These pits provide entry points for the equipment.
Insertion of New Pipe
A specialized bursting head, attached to a hydraulic pulling machine, is inserted into the existing pipeline. This bursting head is larger than the diameter of the existing pipe and has cutting blades attached to its surface.
Bursting
The bursting head is then pulled through the old pipe, breaking it apart as it progresses. This is typically achieved through hydraulic force exerted by the pulling machine.
Simultaneous Installation of New Pipe
Behind the bursting head, a new pipe, typically made of high-density polyethylene (HDPE) or another suitable material, is simultaneously pulled into place. The bursting action effectively fragments the old pipe, making way for the new one.
Connection and Restoration
Once the new pipe is in place, it is connected to the existing pipeline at both ends. Access pits are backfilled, and any surface disturbances are repaired.
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