Hydraulic fracture

The destruction method is the innovative and most common way to rehabilitate pipelines around the world. This technology has found wide application in the replacement of cast iron, steel, reinforced concrete and other types of pipelines with polyethylene, almost perpetual pipes for water supply , sewage and heating networks .

Objectively, the need for a destruction method is due to the following reasons.

• Urban utilities throughout Russia are worn out 70-90%. The bulk of the steel and cast iron pipelines simply rotted. In these conditions, the development of housing and communal services simply requires the large-scale application of new construction technologies.
• In cramped urban environments, it is often simply nowhere to lay communications outside the old piping lines. The need for laying communications along old, worked-out routes in our cities is almost more than laying new pipelines.
• Gradually, almost everywhere, both in large and small cities, the prohibitions on opening the roadbed, on work carried out in an open way, come into force.

The main advantages of this technology:

• work takes place without opening the roadway;
• the pipe is laid along the old channel;
• diameter up to 1200 mm;
• repaired sections about 50 meters long
• high speed of the pipeline;
• the old pipe does not require flushing;
• no vibration;
• Possibility to increase pipeline throughput.

The main disadvantages of this technology:

• separation of pits and a partial additional excavation are required;
• the high cost of investing in equipment in the first stage.

1. Preparation of the receiving and starting pit.
2. The hydraulic breaker rods are progressively twisted by a special mechanism and pushed along the old channel of the pipeline until they exit into the receiving pit.
3. After the rods exit, a destructive head is installed in the receiving pit and behind it through the collet grip pipe.
4. When all the elements are connected, the unit switches to the reverse pull mode and the process of replacing the old pipe with a new one begins.

Other rehabilitation methods, such as pipe-in-pipe technology or restoration of old pipelines, are not always possible and economically feasible. And the open method takes longer, requires a larger-scale involvement of technology and significant labor costs. In the future, you will certainly need a backfill and landscaping. The main advantage of all trenchless methods of laying communications is the lack of the need to block traffic when driving under highways.

• Pipeline laying

• Horizontal directional drilling technology is an important element in the construction of underground utilities
• Hydraulic breakers for trenchless pipe replacement