This form of dredging is best when working with fine materials because they can easily be held in suspension. The material is sucked by a centrifugal pump. This type of dredger is used in harbors.ĭredgers in this category lift the loosened material through a pipe system. The shells are mounted on a dragline of the backhoe type. The grab dredger is made of two shells that are operated by wires. This is an immobile dredger that is secured on anchors. It got its name from the fact that it is equipped with an endless chain of buckets that fill while scraping over the bottom. Its movement is facilitated by winches that swing the platform in semi-arcs around the anchor. It is a stationary dredger which is fixed on anchors. This is one of the oldest dredgers in existence. This type of dredging is conducted in a full column of water and does not involve draining the water body. Mechanical typically dredging takes place at the shoreline or off a barge. It transports the loosened material to the surface through the use of a bucket, clamshell, or other means. Mechanical dredges work by mechanically digging sediment from the bottom surface of a water body. The two main types of dredgers are mechanical and hydraulic dredgers. This classification is dependent on the method by which the specialized equipment transports sediment and other materials. Dredging Methodsĭredging processes can be split into two main groups or types. This brief video presents an overview of various dredging methods including mechanical, hydraulic, and hydrodynamic dredging. Mechanical methods presented include clamshell, backhoe, bucket ladder, and dragline hydraulic dredging methods presented include cutter head and plain suction. This video demonstrates various dredging methods including mechanical dredging, hydraulic dredging, and hydrodynamic dredging.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |