Page - 618 - in Book of Full Papers - Symposium Hydro Engineering

Since most of the percentage of the sediment to be dredged is cohe- sive, to assure the correct productivity requested by total project time allowed by A2A, the pump has been coupled to two cutter heads, specifically de- signed for cohesive materials (Fig. 10). Fig. 10 Cutter heads Têtes de coupe In addition to that, according to the request of the Client to minimize the turbidity generated by dredging activity, a special anti-turbidity tool (Fig. 11) has been installed on the submersible pump. This tool allowed to mini- mize the dispersion of fine sediment around dredging area, avoiding the movement of fine sediment to right side water intake, and the ingestion of fine sediment by turbines installed at Somplago power plant. 618