Bore cleaning device for cast-in-place bored piles

Abstract

The invention provides a bore cleaning device for cast-in-place bored piles, which comprises a drill stem and an externally hung steel wire rope disposed on the same. The bore cleaning device enables the steel wire rope on the drill stem to rotate with the drill stem, such as an impeller to rotate, so that firstly, large mud pies in a cast-in-place bored pile can be broken to facilitate sludge settling and bore cleaning, and the efficiency of hole cleaning can be improved greatly; and secondly, under rotation of the impeller, such as the steel wire rope, the mud is mixed fully and generates impact to sweep the wall of a bore, the effect of mud wall protection is improved greatly, and bore forming quality and pile forming quality are improved. The bore cleaning device is simple to operate and saves construction period, so that the pile forming quality can be improved, and considerable economic benefit and social benefit are created for engineering.

Description

technical field [0001] The invention relates to the technical field of building construction devices, in particular to a hole cleaning device for bored piles under muddy soil conditions. Background technique [0002] In the pile forming process of bored filling piles, hole cleaning is an important process. The sediment at the bottom of the hole is one of the main factors affecting the bearing capacity of the bored pile. Cleaning the hole can remove the sediment at the bottom of the hole and reduce the mud density in the hole. [0003] In the geological environment of silty soft soil, the traditional hole cleaning method is the mud change method, and its principle is as follows: use the mud pump to press the mud to the bottom of the hole through the drill pipe at a medium speed, and replace the slag mud suspended in the hole . [0004] The disadvantages of the pulp change method are: [0005] (1) If a large mud mass falls into the bottom of the hole, it is difficult to rem...

AI Technical Summary

Problems solved by technology

[0005] (1) If a large mud mass falls into the bottom of the hole, it is difficult to remove;

[0006] (2) When the mud with low relative density is injected into the hole from the bottom of the hole, the light and heavy mud will generate convective movement in the hole, and it will take a long time to reduce the relative density of the mud in the hole, and it will take a long time to clean the hole; and

[0008] If the hole is not cleaned thoroughly and the bottom of the hole is too thick, the concrete poured underwater will cause interlayer, broken piles, or even waste piles, causing serious losses

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