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Slurry wall is a common solution practiced in engineering, whether in civil or hydraulics works. The conventional solution for the slurry wall execution is very limited in its application for excavation in rock. In this case, the solution is traditionally made with the use of trepanation, which has major executive limitations and difficulties. Consequently, it also has a very low production.

As a result, an excavation system was developed, composed of a heavy steel frame to the bottom of which are mounted two gear boxes. This gear boxes, are in turn, composed by two wheels mounted with special bits around it. This tool is known worldwide as "Hydromill", and this is being introduced in Brazil.

Advantages

• System used to drill up to 120m in depth;
• The quality of joints between panels is improved, due to the overcutting that is created at the time of excavation of the secondary panel;
• Allows rock drilling that has an unconfined compressive strength of more than 100 MPa.

Applications

• Cut-off walls - waterproof barrier;
• Retaining walls;
• Foundation elements (diaphragm piles).

Execution methodology