A device for dredging under the wharf and its construction method

Abstract

The invention relates to a wharf lower portion dredging device. The wharf lower portion dredging device comprises diesel oil driven equipment, two slurry pumps, a high-pressure water pump, a hydraulic pump, a conveying mechanism, a hoisting mechanism and a drag head assembly. The diesel oil driven equipment, the slurry pumps, the high-pressure water pump and the hydraulic pump are arranged on a working platform. The two slurry pumps are mounted on the rear side of the conveying mechanism. The front end of the working platform is connected with the conveying mechanism through a movable shaft. The working platform is provided with a front anchor gear, a rear anchor gear, a left anchor gear and a right anchor gear for fastening and fixing. A dredging construction method comprises the steps that firstly, equipment is mounted and debugged; secondly, the dredging device enters the construction area, and front splay anchors / cables and rear splay anchors / cables are fastened; thirdly, the dredging drag head assembly is extended into a preset coordinate point according to the tide level; fourthly, construction is conducted in a segmented and layered mode; and fifthly, after the drag head assembly is fallen, the drag head assembly is translated left and right by fastening or loosening the anchor cables, and the step is repeated to complete operation. According to the scheme, during operation, operators do not participate in operation on the wharf lower portion, and the whole implementation process is easy to operate, safe and reliable.

Description

technical field [0001] The invention belongs to the technical field of port engineering dredging, in particular to a device for dredging under a wharf and a construction method thereof. Background technique [0002] With the rapid development of my country's port construction volume, a large number of new wharves and berths have been put into operation quickly. At the same time, due to the long-term siltation of the soil near the wharf, the safety performance of the wharf structure has been reduced. especially important. There is a dense pile group structure under the high-piled wharf in the port. Under the influence of time factors, tides, wind and waves carrying mud, or wharf berthing upgrades, etc., it is necessary to clean up the silted soil and undisturbed soil under the wharf. Due to the narrow space, resulting in Some large and medium-sized mature dredging equipment cannot operate. However, professional dredging equipment imported from abroad is expensive and has a l...

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Problems solved by technology

[0003] In order to solve the technical problems existing in the known technology, the present invention provides a construction method of dredging equipment for construction in the narrow space below the wharf, which is convenient to use and improves work efficiency. Through the dredging equipment and construction method, it can be solved in relatively Under the condition of hard soil, such problems as poor construction efficiency, low safety performance, poor quality control degree, etc.

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