ACTIVITIES

Hydromill

The conventional solution for the diaphragm wall execution is very limited in its application for excavation in rock.

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

Rio de Janeiro Subway - Jardim de Alah Station - Rio de Janeiro/ Brazil
Diaphragm wall with the use of hydromill.

BRASFOND HAS ONE OF THE MOST MODERN FLEET OF HYDROMILLS IN THE AMERICAS

Advantages

The use of hydromill in the excavation of soil or rock panels has significant advantages over conventional methods:

  • System can be used to drill panels to depths of up to 390ft (120m);
  • 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 excavations in very high strength rocks;
  • Verticality control on the X and Y axis.

Applications

The main applications of hydromill in foundation engineering are:

  • Cutoff walls - waterproof barrier;
  • Retaining walls;
  • Foundation elements (diaphragm piles).
Rio de Janeiro Subway - Jardim de Alah Station - Rio de Janeiro/ Brazil
Diaphragm wall with the use of hydromill.

Learn more about the Hydromill

Specifications, construction sequence, monitoring and control, case studies.

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