Technology also allows the renovation and clearing of the existing, damaged sewage pipes, without the need to interfere with the surface, similar to the method of static cracking. The solution is used wherever urgent intervention is needed. In the event of a failure in densely built-up urban spaces, where interference with the existing infrastructure would generate high social costs. The broken installation is filled with injection leaven and drilling is performed in the same way as in the case of trenchless laying of the installation in the ground.
It is possible to renovate old networks even in the event of a complete failure and obstruction of the sewage system. As in the case of a new installation, the repair of damaged ducts begins with a pilot drilling of an existing, blocked installation.
The system of radio location of the drilling head allows you to control the route while drilling through obstacles. In the case of an obstruction caused by a hard and stubborn fraction, e.g. a fragment of a rock, the technology allows for drilling through it without losing the original route of the existing installation.The old, blocked pipeline is reamed.
The method of reaming the pipes enables any change in the diameter of the pipe, adapting it to the new design requirements. This is of particular importance when the existing network is expanded and the diameter of the existing connections between the collectors needs to be increased.
During renovation, there is no need to block the flow of sewage in the adjacent installations.