Secondary hole clearing method of cast-in-place pile

Abstract

The invention relates to the technical field of cast-in-place pile secondary hole clearing, and discloses a secondary hole clearing method of a cast-in-place pile. A pile hoe passing through one-timehole clearing, a submersible electric pump, whirlcone, and a settling box are included, the method includes the following steps that (1) the submersible electric pump is mounted; (2) the whirlcone iserected; (3) the whirlcone separates small particle slurry and large particle slurry, the large particle slurry is discharged from a slag-drip opening, and the small particle slurry overflows from anoverflow outlet through a second transporting pipe to the settling box; (4) a return pipe communicates with the pile hole, and high-quality thick liquid flows back to the pile hole through the returnpipe; and (5) the submersible electric pump and slurry whirlcone are started. The submersible electric pump and whirlcone are used, the weight is light, connection is convenient, loads applied to a platform by second hole clearing construction is lowered, safety and reliability are realized, the hole clearing efficiency is high, the adverse effect of hole collapse caused by hole clearing for a long time is avoided, the quality of pile forming is guaranteed, in addition, hole clearing time is short, the slurry using amount is small, and second hole clearing construction of the cast-in-place pile of an over water work platform is met.

Description

technical field [0001] The patent of the present invention relates to the technical field of secondary hole cleaning of cast-in-situ piles, in particular, to a method for secondary hole cleaning of cast-in-situ piles. Background technique [0002] Secondary hole cleaning of cast-in-situ piles is a key process in the pile construction process. Traditional secondary hole cleaning methods include positive circulation, pump suction reverse circulation, and gas lift reverse circulation. The secondary hole cleaning system includes mud Circulation trenches, sedimentation tanks, mud tanks, etc. [0003] Positive cycle secondary hole cleaning requires 3PN mud pump suction to generate mud circulation, pump suction reverse cycle hole cleaning requires a large 6BS gravel pump to generate vacuum to form reverse cycle, gas lift reverse cycle hole cleaning requires air compressor suction to generate vacuum Form a reverse cycle. [0004] The mud sedimentation tank and mud circulation tank...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for secondary hole cleaning of cast-in-place piles, aiming to solve the problem in the prior art that the above-water work platform cannot realize secondary hole cleaning of cast-in-place piles

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