Hole cleaning device and method for cleaning boring-cast-in-situ-pile hole bottom sediments

Abstract

The invention discloses a hole cleaning device and method for cleaning boring-cast-in-situ-pile hole bottom sediments. The hole cleaning device for cleaning the boring-cast-in-situ-pile hole bottom sediments comprises a main rod body, stirring blades, a filtering net structure, a driving mechanism and a high-pressure-air generation device, wherein the main rod body is a hollow transmission shaft,and is used for transferring the torque and extending to the boring-cast-in-situ-pile hole bottom to output high pressure air to the boring-cast-in-situ-pile hole bottom, the high pressure air disturbs slurry to form turbulent flow at the hole bottom, and therefore the hole bottom sediments are turned up and suspended in slurry; the stirring blades are located at the lower portion of the main rodbody and arranged on the main rod body in the radial direction, are used for extending into the sediments of the boring-cast-in-situ-pile hole bottom, and rotate along with the main rod body to stir the sediments, and the sediments are loosed through shear force generated through stirring and suspended; the filtering net structure is located at the upper portions of the stirring blades and installed on the stirring blades and / or the main rod body, and is used for collecting the sediments suspended in the slurry; the driving mechanism is used for driving the main rod body to rotate; the high-pressure-air generation device is used for introducing the high pressure air into the main rod body.

Description

technical field [0001] The invention relates to the technical field of hole cleaning of perforated cast-in-place piles, in particular to a hole-cleaning device for cleaning the bottom sediment of perforated cast-in-situ piles. In addition, the present invention also relates to a method for cleaning the sediment at the bottom of the punched cast-in-place pile, which includes the above-mentioned hole cleaning device for cleaning the bottom sediment of the punched cast-in-place pile. Background technique [0002] The punching rig can penetrate various complex strata, and has the advantages of low cost, wide application range, large single pile bearing capacity, good pile quality, etc. It is especially suitable for forming holes in hard rock strata and maintaining structures in urban viaducts and subway stations. It has been widely used in engineering construction. [0003] In the construction of percussion drilling, the drill bit repeatedly smashes the bedrock, turning the bed...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a hole cleaning device and method for cleaning the sediment at the bottom of the hole of the perforated pile, so as to solve the existing technical problems of low efficiency of sediment removal and a large amount of waste mud generated during percussion drilling construction

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