Trench Backfilling


padding creation


Creation of padding


Backfilling and the creation of padding at the bottom of a trench are second
in importance only to welding.

Rocks that remain at the bottom of the trench as well as the rocks that have not been removed from the soil used to backfill the trench can damage the pipe coating and lead to corrosion.

Specialized machines that operate directly inside the trench grind the soil and crush the rocks at the bottom of the trench, leaving behind uniform ground soil  — otherwise known as padding.

This minimizes the danger of damaging the coating of the pipe while it is being laid in the trench.


Soil grinding and trench back filling

For backfilling, it is preferable to use soil that was removed from
the trench and sifted in order to remove rocks that may damage
the pipe.

Machines equipped with hammersvibro–screens work on back filling the trench in dry and wet weather by sifting the soil. that have

If the geological conditions are such that there is not enough ground soil, then it is necessary to crush the soil.


backfilling with soil sifted by the vibro–screen


The most effective way of solving this problem is directly
at the construction site. The first step involves the sifting
of the soil, after which the remaining rocks are ground.

Crushing machines can grind stones and other materials to create a uniform backfilling material directly on site. They collect the material located at the edge of the trench, grind it and use it to backfill.


grinding the soil and backfilling


For safety reasons and to increase productivity, each machine is equipped with a remote control system.