With the vigorous development of dredgers and rapid progress in science and technology, in order to meet the construction requirements of different projects, various dredger companies have developed different types of dredgers and put them into use. The more common dredgers in the project can be divided into There are two major categories: mechanical and hydraulic. Mechanical dredgers mainly use excavating tools for underwater excavation, and use the tools themselves to perform vertical lifting to achieve engineering purposes. They mainly include grab dredgers, bucket dredgers and chain bucket dredgers; hydraulic dredgers Mud boats use mechanical rotation to cut the underwater soil layer, mix the sand and water to form a certain concentration of mud, which is transported ashore through the mud pipeline, including suction dredgers, cutter suction dredgers and trailing suction dredgers For dredgers, etc., when choosing a dredger, it depends on the nature of the project and the meteorological, hydrological, and geographical conditions of the construction area.
In coastal and estuary areas with heavy wind and waves and no cover, self-propelled trailing suction dredgers should be used; cutter suction dredgers with mud pipelines are often used in combination with dredging and filling; bucket dredging for hard soil under water Ship: In the case of a small working surface, such as at the front of a port, a grab dredger should be used. When the dredger is operating, it is necessary to avoid obstructing the navigation of the transport vessel, and pay attention to safe operation and complete facilities. At the site, it is necessary to calibrate the exact position of the trench, lay out water level signals, dredging and unloading area signs, and conduct frequent water depth measurements to improve the safety of the dredger.
