关键词: 超大型自航绞吸挖泥船, 总体布置, 挖掘, 输送, 柔性钢桩, 全电力驱动

Abstract: The ultra-large self-propelled cutter suction dredger not only has the operating capacity of the ultra-strong excavation and the long-distance efficient transportation of the seabed rock, but also has the adaptability to high sea state and the ability of high autonomy. It has become the irreplaceable equipment for major infrastructure constructions, such as port, artificial island and land reclamation, which is the preferred ship type to be developed for large dredging companies. This paper analyzes the development of the international ultra-large self-propelled cutter suction dredger, and reviews the development history of the large cutter suction dredger in China. The operating principle and system composition of the cutter suction dredger are briefly described to analyze the key factors to be considered in the design of the cutter dredger regarding the dredging soil quality, capacity, digging depth, discharge distance and environmental conditions. It comprehensively analyzes the key technologies of the design scheme of the “HAO HAI LONG”, such as the ship type and general arrangement, the cutter drive, the structure design of the bridge, the mud and sand transportation, the flexible steel pile, the full electric drive and the vibration reduction of the accommodation. The technologies of the long-shaft drive with double motor for cutters, the double shell box type bridge structure, the combination of three dredging pumps, the flexible steel pile and the full electric drive are very suitable for the ultra large cutter suction dredger. The design principle of the cutter suction dredger and the design technology of the “HAO HAI LONG” can provide references for the development of the ultra large self-propelled cutter suction dredger.

Key words: ultra-large self-propelled cutter suction dredger, general arrangement, excavation, transportation, flexible steel pile, full electric drive