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A caisson construction equipment and construction method

A technology for construction equipment and caissons, applied in caissons, infrastructure engineering, buildings, etc., can solve problems such as uneven settlement, and achieve the effects of ensuring normal sinking, high sinking efficiency, and reducing frictional resistance

Active Publication Date: 2021-07-23
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the uneven settlement that is easy to occur in the construction of caissons in the prior art, so as to provide a kind of equipment and construction method for efficient caisson construction

Method used

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  • A caisson construction equipment and construction method

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Embodiment 1

[0039] Such as figure 1 As shown, the present embodiment provides a caisson construction equipment, including:

[0040] An excavating mechanism 2 is used to excavate the shaft downwards, and the excavating mechanism can be selected as a grab excavator, a cutterhead drilling rig, etc.;

[0041] The caisson lifting mechanism is used to lift and release the caisson 1 into the vertical shaft along with the excavation mechanism;

[0042] A slurry separation mechanism 35, which is preferably a silt screen;

[0043] The slurry discharge mechanism is used to suck the mud mixture in the shaft to the slurry separation mechanism for separation;

[0044] The grouting mechanism is used to inject the slurry separated by the slurry separation mechanism back into the shaft;

[0045] The high-pressure water flushing mechanism is used for impacting and softening the part of the shaft blocking the sinking of the caisson, and diluting the density of the mud in the shaft.

[0046] The caisson ...

Embodiment 2

[0059] This embodiment provides a caisson construction method, using the caisson construction equipment described in Embodiment 1. This caisson construction method comprises the steps:

[0060] Excavating a shaft: excavating a shaft and transporting the soil out of said shaft;

[0061] Mud separation cycle: After the mud mixture in the shaft is sucked and separated, the separated mud is injected into the shaft;

[0062] Sinking of the caisson: sink the caisson into the vertical shaft. If the caisson is blocked during the sinking process, spray high-pressure water to the blocked place and stop the grouting work.

[0063] In this construction method, through the steps of mud separation and circulation, and spraying high-pressure water to the blocked place, when the caisson is unevenly lowered, the high-pressure water flushing mechanism can be used to impact the sinking resistance point of the caisson to reduce the frictional resistance at the lower end of the wellhead, thereby ...

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Abstract

The invention relates to the technical field of water conservancy and hydropower engineering, in particular to caisson construction equipment and a construction method. Among them, it includes an excavating mechanism for digging down the vertical shaft; a caisson lifting mechanism for lifting and releasing the caisson in the vertical shaft along with the excavating mechanism; a slurry separation mechanism; and a grouting and grouting mechanism; A high-pressure flushing mechanism that impacts and softens the part of the shaft that blocks the sinking of the caisson, and dilutes the density of the mud in the shaft. Through the setting of two sets of grouting systems, the grouting and grouting circulation mechanism, and the high-pressure flushing mechanism, when the caisson is unevenly lowered, the high-pressure flushing mechanism can be used to impact the sinking resistance point of the caisson to reduce the lower end of the wellhead. frictional resistance, so as to ensure that the caisson descends evenly.

Description

technical field [0001] The invention relates to the technical field of water conservancy and hydropower engineering, in particular to caisson construction equipment and a construction method. Background technique [0002] In the construction of water conservancy and hydropower projects, the caisson construction method is one of the important construction methods used in the construction of sluices, pumping station projects and deep buried foundation projects. It has the advantages of simple construction technology, large buried depth, good integrity and stability, etc. , and has less impact on adjacent buildings and the surrounding environment. Carrying out caisson construction, compared with large-scale excavation construction, can greatly reduce the amount of earthwork for excavation, transportation, and backfilling, so it can speed up the construction progress and reduce construction costs. [0003] In the caisson construction equipment of the prior art, when the caisson...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D23/08
CPCE02D23/08E02D2250/0061
Inventor 李嗣勤李宗华高翔
Owner STATE GRID CORP OF CHINA
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