Dredging machine under wharf and dredging method thereof

Abstract

The invention discloses a dredging machine under a wharf and a dredging method thereof, and relates to dredging equipment and a construction method thereof. The dredging machine comprises a high-pressure water pump, a submersible mud pump, a dredging head and a nozzle, and is characterized in that: the high-pressure water pump is mounted above the submersible mud pump; the lower end of the submersible mud pump is connected with the dredging head; a sucking port is arranged at the bottom of the dredging head; a transition water tank is arranged at the upper part of the dredging head; a water outlet of the high-pressure water pump is connected with a water inlet of the transition water tank through a connection pipe; the transition water tank is connected with a high-pressure flushing watertank arranged at the middle part of the dredging head through a connection pipe; the nozzle is arranged at the lower end of a water pipe of the high-pressure flushing water tank vertically going to the bottom of the dredging head; high-pressure flushing nozzles forming an angle of 45 degrees with the horizontal plane are uniformly distributed along the edge of the high-pressure flushing water tank; after the dredging machine is placed on the soil surface by a dredging platform with hoisting equipment, the high-pressure water pump is started to perform vertical and horizontal high-pressure flushing to break soil; and then the submersible mud pump sucks mud, and the mud is sucked in through the dredging head and discharged to a mud boat through a mud pipe of the submersible mud pump.

Description

technical field [0001] The invention relates to port dredging equipment and a construction method thereof. Background technique [0002] The siltation of the dock basin will affect the utilization rate of the dock berths. For the silt at the front of the wharf, traditional dredging equipment can be used for dredging, but the silt at the bottom of the pile-based wharf cannot be removed with traditional dredging equipment. Dredging between pile groups under the high-piled wharf platform is a special dredging project that requires special dredging equipment. The dredging equipment imported from abroad is expensive, and its comprehensive performance is obviously not suitable for the soil structure in different regions. The current dredging equipment generally has defects such as high energy consumption, low work efficiency, low mud concentration, single function, poor adaptability to water depth, and poor adaptability to soil quality. Currently used wharf dredging equipment m...

AI Technical Summary

Problems solved by technology

The dredging vessel with a micro-cutter soil-breaking end is suitable for shallow water conditions with a water depth of less than 10m, but once it encounters the problem of underwater dredging with a water depth greater than 10m, the equipment will encounter complex structures, difficult control, and low efficiency and high construction costs, therefore, it is necessary to use larger equipment to support deep water dredging

Although the use of submersible mud pumps for dredging has the advantages of simple and flexible equipment, no limitation of water depth conditions, and relatively low unilateral cost, it also has the problems of poor soil-breaking ability and difficult control of underwater flatness.

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