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Hole-cleaning method for washing pile hole and pumping sand

A pile hole and hole bottom technology, which is applied in wellbore flushing, earthwork drilling, wellbore/well components, etc., can solve the problems of high investment in equipment, slow pile hole cleaning speed, and large amount of mud drilling slag transported outside , to achieve the effects of ensuring construction quality, saving construction costs, and good social and economic benefits

Active Publication Date: 2015-06-10
CCCC FOURTH HIGHWAY ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a pile hole clearing method, which is suitable for clearing the pile foundation of large-diameter end-bearing piles in the whole rock formation or pa

Method used

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  • Hole-cleaning method for washing pile hole and pumping sand
  • Hole-cleaning method for washing pile hole and pumping sand
  • Hole-cleaning method for washing pile hole and pumping sand

Examples

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Example Embodiment

[0018] After the pile hole is formed, the pile hole needs to be drilled before pouring concrete. The hole drilling process includes sand screening, slurry pumping, and washing. Such as figure 1 , figure 2 , image 3 As shown, the implementation steps of the present invention are as follows:

[0019] (1) A mud cylinder 2 for storing mud is set near the pile hole 1, and a filter screen 3 is set above the mud cylinder 2, and the filter screen 3 is fixed on a filter screen bracket 4, and one end of the filter screen is higher. Low-inclined setting, and the edge of the lower end of the filter screen 3 is located outside the edge of the mud cylinder 2;

[0020] (2) A slurry suction pump 6 is suspended on the handlebar of the percussion drill 5 by a chain hoist, the slurry suction pump 6 is suspended in the pile hole 1, and the slurry suction pump 6 is connected to a slurry outlet pipe 7;

[0021] (3) A tripod 8 is provided on one side of the mud cylinder 2, a slurry pump 9 is suspended...

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Abstract

The invention provides a hole-cleaning method for washing a pile hole and pumping sand. During the hole cleaning, gravel-containing slurries are sucked and filtered by a slurry sucking pump, and then recycled, so that the workload for the outward transport of the slurries is reduced, and the number of the slurries is reduced; then the clear water is used for replacing the slurries according to the replacement principle, so that the concentration of the slurries is quickly reduced; the fine sand precipitating speed is increased; the clear water is used for flushing the precipitated residues on the bottom of the hole; the precipitated residues are directly pumped out of the hole by the slurry sucking pump; the floating and precipitating processes are eliminated; the hole cleaning speed is increased.

Description

technical field [0001] The invention relates to a construction device for pile holes of bridge pile foundations, in particular to a method for clearing pile holes before pouring concrete. Background technique [0002] Percussion drill is a traditional hole-forming equipment for geological pile foundations in rock strata. It is mainly suitable for pile foundation construction in small and medium-diameter rock formations. It is used in super-large-diameter pile foundation holes. There are problems such as large amount of slag transported abroad, large investment in equipment, etc., and the thickness of the bottom of the ultra-large-diameter end-bearing pile hole is easy to exceed the standard. However, under certain geological conditions, such as a suspension bridge across the river, the pile foundation of the main tower is close to the river, and the pile foundation of the main tower is a super-large-diameter pile foundation rock pile with a diameter of more than 2.5 meters. ...

Claims

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Application Information

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IPC IPC(8): E21B21/01E21B21/06
CPCE21B21/00E21B21/01E21B21/065E21B21/12
Inventor 王志强孟祥源向远航郝明钱育强单晓东梁紫艳张金翠庞庆蔡悬
Owner CCCC FOURTH HIGHWAY ENG
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