Cutter suction dredger construction foundation
1.The maximum digging width of the steel pile dredger: the maximum digging width is limited by the length of the ship, generally, it is the total horizontal length of the ship during the construction (please remember that the vertical distance between the steel pile and the cutter head [...]
Development trend of the CSDs
Since the first CSD was born in the US in 1884, after 100-year development, the CSD has become the largest ship type in the dredger kingdom. At present, the CSDs are widely used in dredging constructions and land reclamation projects in ports and channels. With the rapid development of [...]
Construction Features of Large Cutter Suction Dredgers with Large Discharge Distance
Cutter suction dredgers are currently widely used in dredging constructions, which are using the front end of the suction pipe to install rotary reamer device around it to cut and stir the sediment at the bottom of the river, and then the twisted sediment material is transported to disposal [...]
History of the World Dredging Industry
With the continuous development of science and technology, dredging equipment and technology have been developed rapidly in the past hundred years, which can roughly be divided into three stages. The invention of the steam engine by Watt in Englandattheendof the 18th century triggered the industrial revolution in Europe and [...]
Preparation before dredging construction
Before dredging, we should first carry out a soil survey and understand the local hydrological and meteorological conditions. And we should also apply the theory of dredging and mud transportation, which mainly includes the setting of reamer excavation parameters and the matching of key parameters of centrifugal pump, mud pump, [...]
The dredging cutter teeth
The dredging cutter teeth, because of different dredging forms, can be divided into four categories: reamer cutter teeth, bucket-wheel cutter, knife flywheel cutter teeth, and environment-friendly cutter teeth. Among them, reamer cutter tooth and bucket wheel cutter tooth are the most common, while knife flywheel cutter tooth is more [...]
The significance of soil exploration in the dredging process
To choose proper dredgers and reasonably arrange the construction, it is necessary to confirm the soil quality and classify them, which is the main evidence of confirming production efficiency and calculating the cost. So, at the beginning of dredging, we should have a deep exploration of the soil. And the [...]
What is dredging？
Dredging is referring to those engineering measures using dredger equipment to excavate those underwater soil and stones to increase the depth of water and remove the silt, which is a significant part of hydraulic engineering and transportation. Now it is used in constructing and maintaining the channel and port, land [...]
Advantages and Characteristics of HANSEL Cutter Suction Dredger (Epi 1)
Hansel Marine is a leading Chinese manufacturer of Cutter Suction Dredger (CSD). Distinguished from some other Chinese manufacturers, HANSEL is a shipyard with rich experiences in building kinds of marine vessels, which makes HANSEL very familiar and adaptable to the shipbuilding standard, rules, and regulations. Cutter Suction Dredger characteristics and [...]
Construction combination of large and special projects
How to choose construction combination Large projects can be divided into several construction sections with different construction conditions, and they need both excavation and filling, according to the characteristics of the above construction composition, choose the appropriate combination of construction, such as approach channel select self-propelled trailing suction hopper dredger, [...]
Construction combination for the purpose of excavation
1.Water depth of construction areas On navigable rivers, vessels frequent traffic, or there are large wind waves on the approach channel of the seaport and estuarine port. if the construction area has enough water depth, there are waters at both ends for the dredger to turn head and throw mud [...]
Cutting system——transformation of the cutter
The performance of cutter Cutter is a cutting tool for cutter suction dredger to cut underwater soil. Driven by the prime mover, it rotates to cut the soil layer and causes the soil layer separated by cutting to be deformed, broken, and mixed with water to form a slurry, which [...]