High-Performance Cutter Suction Dredger for Precise Dredging Operations

Product Description
The cutter suction dredger is a common and widely used dredging vessel. Its main working principle is to use the rotating auger to loosen the soil on the riverbed or seabed, mix it with water to form mud, and then suck it into the pump body through the mud suction pipe, and transport the mud to the mud discharge area through the mud discharge pipe.
From a structural point of view, the cutter suction dredger is mainly composed of the hull, auger system, mud suction system, mud discharge system, positioning and displacement system, etc. The hull provides the entiredredger with an operating platform and buoyancy support to ensure stability when operating on the water surface;the auger system is installed at the front end of the mud suction pipe, and the highspeed rotating auger is used to cut and stir the bottom soil for subsequent mud suction operations. There are various types of cutters, such as ordinary cutters for soft soil, and cutters equipped with teeth for digging harder soil such as clay; the mud suction system consists of a mud suction pipe and a mud pump. The powerful mud pump generates suction to suck the loosened mud through the mud suction pipe; the mud discharge system includes a mud discharge pipe and related connecting equipment, which is responsible for transporting the sucked mud to the designated mud discharge area over a long distance. The length of the mud discharge pipe can be adjusted and spliced according to actual operation requirements. The positioning and shifting system ensures that the dredger can accurately fix its position during operation and move according to the predetermined dredging trajectory.

Common methods include steel pile positioning, anchor cable positioning, and three-cable positioning.

Product Parameters

Operation process
Before dredging, the construction area must be surveyed in detail, including measuring the water depth,topography, and understanding the soil conditions, and a reasonable construction plan must be formulated based on the survey results. Then, the cutter suction dredger is moved to the construction area, and the shipis accurately fixed at the starting position through the positioning and displacement system. The auger system is started, the auger speed and cutting depth are adjusted, and the underwater soil is loosened. At the same time, the mud pump is turned on to generate suction to suck the loosened mud through the mud suction pipe and transport it to the mud discharge area through the mud discharge pipe. During the dredging process, it is necessary to pay close attention to the operating parameters of various equipment, such as the torque of the auger, the pressure and flow of the mud pump, etc., and adjust the construction parameters in time according to the actual situation. As the dredging work progresses, the dredger is gradually moved according to the predetermined dredging trajectory through the positioning and displacement system to complete the dredging operation of the entire construction area.

Detail photos

Application areas
Inland river and lake dredging: It can effectively clean up the silt in inland rivers and lakes, improve the navigation capacity of rivers, improve water flow conditions, and prevent floods caused by river siltation. For example, in the inland river regulation projects in some cities, the cutter suction dredger can accurately remove the silt accumulated on the riverbed for many years, restore the normal water section of the river, and improve the ecological environment around the inland river.
Coastal port dredging: It is used to maintain and widen the port channel to ensure that large ships can enter and exit the port safely and smoothly. With the development of international trade, the port throughput continues to increase, and the requirements for the depth and width of the channel are also increasing. The cutter suction dredger meets the navigation needs of large ships and improves the operating efficiency of the port by deepening and widening the channel.
Land reclamation: In coastal areas, the cutter suction dredger is used to excavate the seabed silt and transport it to the designated area through the sludge pipe for filling operations, thereby forming new land. This provides valuable land resources for urban development in areas with limited land resources, such as some coastal cities,and can be used to build industrial development zones, port supporting facilities, coastal tourist resorts, etc.
Special rock stratum excavation (when equipped with high-power auger equipment): Under special circumstances, when a high-power auger equipment is installed on the cutter suction dredger, rock strata such as basalt and limestone can be excavated without blasting. This has important application value in some small rock stratum excavation projects, or in areas with strict requirements on the construction environment and where blasting operations are not allowed.

Company profile

Shandong yongsheng dredging machinery Co.,LTD.is located in Huanglou Street, Qingzhou City, Shandong Province, China. It has 2 production bases , total area near 2000m2, and more than 20 years manufacturing experience in water area environmental protective equipment. It is a professional supplier of integrated with R&D, consultation, manufacturing and after-sale service. Yongsheng now has obtained certification: ISO9001.