Dam dredging with a low environmental impact system
A system consisting of three hydraulic pumps with excavators was the protagonist of a low environmental impact dam dredging.
The customer’s request was to desludge the area of the bottom drain and the intake of a dam in the province of Udine. The quantity of material to be removed was impressive (30,000 m³ of clayey silt material). Furthermore, it was necessary to preserve the surrounding ecosystem avoiding that the works made the water too cloudy, endangering life in the basin.
Dragflow proposed a low environmental impact system consisting of an anti-turbidity bell inside which three HY85/160 hydraulic pumps with side cutters were placed. The pumps were also equipped with a jet ring to break up the clay material present on the bottom. This solution made it possible to work at sustained rates (removal of 1400 m³/day) without compromising the delicate environmental balance. The system is able to work easily at a depth of 50 meters, furthermore operations can also take place with the dam in operation.