Hole cleaning device for spun-digging pile hole and construction method thereof

Abstract

The invention discloses a hole cleaning device for a spun-digging pile hole and a construction method thereof. The hole cleaning device comprises a cylindrical hole cleaning device casing pipe with a water filtering hole, a slag extracting pump, a filter screen, a center slag discharge hole, a first slag outlet, a second slag outlet, a compressed gas pipeline, a foaming agent pipeline, a sediment collection chamber, a steel plate, a spring, a rubber sheet, a fastening bolt, a rotating bolt, a compressed gas outlet, a foaming agent outlet, a gas flow dividing body, a blocking device, a filter screen fastening bolt, a round insertion rod, a filter screen rotating bolt, a steel cable, a guide wheel and a fixed shaft. The construction method comprises the following construction steps: 1, arranging the hole cleaning device for the spun-digging pile hole at the end part of a rotary drill rod; 2, inserting the hole cleaning device for the spun-digging pile hole to the bottom of the pile hole and fixing the hole cleaning device for the spun-digging pile hole after rotating the hole cleaning device for the spun-digging pile hole by a plurality of circles at a low speed; 3, inputting compressed gas to the compressed gas pipeline and simultaneously inputting a foaming agent; 4, starting the slag extracting pump to extract slags; 5, repeatedly circulating the operation to complete slag removal, pulling out the hole cleaning device to discharge the slags. The hole cleaning device for the spun-digging pile hole and the construction method thereof have the advantages of low manufacturing and use cost and high slag removing and hole cleaning efficiency and solve the problem of difficulty in removal of the sediments of a mechanical hole and particularly a spun-dug mechanical form.

Description

technical field [0001] The invention relates to a pile foundation engineering machine in the construction industry and a construction method thereof, in particular to a rotary digging pile hole clearer and a construction method thereof. Background technique [0002] With the development of underground space and the development of high-rise buildings, the construction of deep foundation pits is increasing day by day, and the pile foundation engineering is developing towards deeper and larger methods. Grouting piles, static pressure sinking pipe grouting piles, rotary digging hole-forming piles, double-rotary DTH hammer grouting piles, etc. Among them, the rotary drilling rig, as an efficient and high-quality drilling machine, has a wide range of applicable soil layers and construction With the advantages of low cost, flexible movement, low noise, and high drilling efficiency, it is more and more widely used in pile foundation engineering. Although the rotary drilling rig has...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a rotary excavation pile hole clearer and its construction method with low production and use costs and high efficiency of slag and hole cleaning, so as to solve the problem of difficult cleaning of mechanical holes, especially the sediment cleaning of rotary drilling mechanical holes

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