Dredging characteristics and suitability of common dredgers
Cutter suction dredger of dredging characteristics Cutter suction dredger is one of the most common and widely used hydraulic dredgers in recent years, which can complete dredging processes such as digging, conveying, discharging, and processing mud at one time, with continuous operation, high production efficiency, and low cost. It is [...]
Reasons for leakage of dredger hydraulic system
The leakage of dredger hydraulic system usually has the following reasons: Design reasons for the leakage of dredger hydraulic system Reasons for seal design Most of the dynamic seals have been precisely designed, If the dynamic seals are qualified, installed correctly, and used reasonably, they can ensure that [...]
Selection of suction and discharge wear-resistant pipe
In order to solve the problem of the short service life of suction and discharge pipe, the wear-resisting property should be enhanced. Through understanding, take general low-alloy steel (Q345) as an example, the inner wall thickness is 18mn, the suction and discharge pipe in use 1 to 2 years later, [...]
Construction management of long discharge distance pipeline of cutter suction dredger
Land tube of cutter suction dredgers According to the topographic conditions, natural conditions, engineering geology, project quality, and construction period, the pipeline scheme is determined, and the route, structure, and location of the mud discharge pipeline are arranged. If we analyze the long construction period of this project, which [...]
Quality control in dredger construction
Direction of dredging There are two main excavation directions for dredgers: downstream construction and countercurrent construction. The main factors to be considered in the direction of excavation are: (1) reduce or avoid the completion of the siltation of the river; (2) ensure the convenience and safety of construction. Practice has [...]
Measures to improve the level of ship safety management
Based on the analysis of the existing problems and shortcomings in the safety inspection and management of cutter suction dredgers, the following measures are proposed to improve the safety management level of cutter suction dredgers. Conduct soil survey and determine construction equipment Before construction, the survey of dredged soil should be carried out, [...]
Characteristics of long discharge distance construction
The cutter suction dredger has the functions of dredging sand (soil, rock) and conveying mud, etc. It has high construction efficiency and adaptability, and is one of the most widely used engineering ships in dredging engineering. In recent years, with the gradual expansion of the construction scale of the port channel, [...]
Key Points of Sinking Operation for Pipe of cutter suction dredger
Selection Principle of Immersed Pipe Line Within the range of blowing distance of the cutter suction dredger in the construction area, the route that the terrain is relatively flat and the average water depth meets the requirements of ensuring the navigable water depth even after the discharge pipe is submerged [...]
How to improve the dredging efficiency of cutter suction dredger
The cutter suction dredger is one of the most widely used dredger types in dredging projects because of its wide range of soil adaptation and the ability to complete the excavation, transportation, and filling processes in one time. With the application of cutter suction dredger, various methods to increase the efficiency of [...]
Dredge pump selection points
1.1 Basic requirements for dredge pump selection In general, the design of dredge pump must take the needs of dredging market into account , and it must have a large range of application, and it will not be designed for specific environment. In the design of the dredge pump, the [...]
Characteristic analysis of dredge pump
Dredge pump is the main machine used by large cutter suction dredger in dredging engineering, It plays an important role in dredging engineering. and its performance directly affects the efficiency of the dredging project. Usually, large cutter-suction dredger using the centrifugal pump as a dredge pump, Its working principle is [...]
Characteristics of environmental dredging
1.1 Dredging equipment The choice of dredging equipment directly determines the form of dredging: different dredging equipment has different disturbance degree to the bottom sediment, different diffusion and leakage performance, and different inhalation concentration. Therefore, the pollution of surrounding water caused by pollutants during construction is also different. At present, the research [...]