Water knife mud suction device applied to hardened soil body structure

Abstract

The invention belongs to the technical field of underwater dredging construction, and particularly relates to a water knife mud suction device applied to a hardened soil body structure. The device aims to solve the problem that a common mud suction device is low in mud suction efficiency. The water knife mud suction device applied to the hardened soil body structure comprises a mud discharge pipe, a water pressure system and an air pressure system are arranged on the periphery of the lower section of the mud discharge pipe, a high-pressure water outlet is formed in the bottom of the water pressure system, the air pressure system is provided with a high-pressure air inlet which is inclined upwards and communicated with the interior of the mud discharge pipe, and the upper end and the lower end of the mud discharge pipe are of open structures. Firstly, the hardened soil body structure is cut into fragments or slurry suitable for being discharged through the water pressure system, and the aim of damaging the hardened soil body structure is achieved; then, the fragments or the slurry is pumped out through the mud discharge pipe by means of the air pressure structure, pertinence to riverbed geology with the clay property is higher, iron-manganese nodules mixed in a clay layer can also be cleaned away and discharged, mud suction efficiency is improved, and meanwhile construction cost is controlled.

Description

technical field [0001] The invention belongs to the technical field of underwater dredging construction, and in particular relates to a water jet mud suction device applied to compacted soil structures. Background technique [0002] With the development of the national economy and the large-scale launch of national infrastructure projects, there are more and more bridges across large rivers, and the technology of bridge foundation construction has also been greatly developed and improved. However, my country has a vast territory, complex hydrology and geology, and many unforeseen factors in the construction of underwater foundation projects, making construction difficult. Therefore, the construction technology of underwater foundations of bridges under complex hydrogeological conditions has become an important part of the construction of large-scale cross-river and cross-river bridges. key technologies. Steel cofferdam is a commonly used structure in deep water foundation co...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of low efficiency of common mud suction measures in the sinking area of ​​the steel cofferdam of the compacted soil due to the poor fluidity of the riverbed such as clay or silt, the present invention provides a water jet applied to the compacted soil structure Suction equipment

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