Dredge pump harbour freight8/28/2023 The most common way is dumping the material.ĭumping - This is done by simply opening the doors that close the hopper. There are several ways to discharge a TSHD. Harder substances such as rock or ironbased rock must be destroyed by a cutter. A trailing suction hopper dredger can only suck relatively loose substance because the steel teeth are not so big. Once the mixture is loaded inside the hopper, the substance will sink and the water is discharged overboard, saving on storage space. If the head is lowered, more material will be sucked but this risks damaging the installation because the material can get stuck inside the pipes. It is possible to regulate the density of the sucked substance. The vessel should always have a positive speed over the ground. Due to lower pressure in the pipe, the material will be sucked inward and discharged in the hopper. In the head there are nozzles connected to a high pressure water installation that are capable of loosening the material on the seabed. This head is comparable to a large vacuum cleaner and is trailed along the seabed. On the end of the pipe a so-called trailing drag head is connected. This is made possible by large powerful pumps and engines able to suck sand, clay, silt and gravel.Ī trailing suction hopper dredger is self-loading/unloading and sometimes equipped with a pressurized discharging system.įrom the side of the ship one or two suction pipes descend to the bottom of the seabed. Trailing suction hopper dredger is a ship that has a full sailing capacity used to maintain navigable waterways, deepening the maritime canals that are threatened to become silted, to construct new land elsewhere or to replace sand eroded by storms or wave action on the beaches.
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