Double-shaft mixing drill with effect of eliminating soil adhesion

A technology of cohesion and biaxial mixing, which is applied in the direction of earthwork drilling, drill pipe, drill pipe, etc., can solve the problems affecting the quality of piles, cement slurry can not be uniformly mixed with soft soil, etc., to ensure the amount of cement mixed , Reduce the effect of bending moment and reduce the effect of returning slurry

Pending Publication Date: 2019-07-12
BEIJING ZHONGYAN DADI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the deep mixing construction, a prominent problem is that the loosened soil around the stirring shaft rotates with the stirring shaft instrument, so that the cement slurry sprayed from the spray port cannot be uniformly mixed with the soft soil, which affects the quality of the pile.

Method used

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  • Double-shaft mixing drill with effect of eliminating soil adhesion
  • Double-shaft mixing drill with effect of eliminating soil adhesion
  • Double-shaft mixing drill with effect of eliminating soil adhesion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The model pile mixing test was carried out on the miscellaneous filling site, the pile depth was set to 5m, and the cement-soil mixing method was used for construction. Two groups of tests A and B were set up, and each group was equipped with 3 specimens. Group A was the experimental group. Stirring drill bit of the present invention; B group is a control group, adopts the general stirring drill bit in the market, and concrete technology is as follows:

[0035] like Figure 1~8 As shown, a dual-axis stirring drill bit with the effect of eliminating soil bonding includes a drill bit 1, a stirring blade, a conversion device 5, a horizontal fixed connection device 6, and a drill rod 7; the drill rod 7 is a hollow cylindrical rod body, The inner side of its lower end is provided with an internal thread, the drill rod 7 is threadedly connected with the drill bit 1, and the drill rod 7 is connected with the stirring blade by welding; the conversion device 5 is connected with ...

Embodiment 2

[0052] When carrying out test piles at a certain construction site, set up a test pile, the more test piles that are added adopt the mixing drill bit of the present invention, the design regulation pile depth is 13m, adopt cement-soil mixing method construction, wherein, the soil layer of the site is:

[0053]

[0054] The specific techniques are as follows:

[0055] like Figure 1~8 As shown, a dual-axis stirring drill bit with the effect of eliminating soil bonding includes a drill bit 1, a stirring blade, a conversion device 5, a horizontal fixed connection device 6, and a drill rod 7; the drill rod 7 is a hollow cylindrical rod body, The inner side of its lower end is provided with an internal thread, the drill rod 7 is threadedly connected with the drill bit 1, and the drill rod 7 is connected with the stirring blade by welding; the conversion device 5 is connected with the drill rod 7 through buckles; the horizontal fixed connection device 6 is connected with the con...

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Abstract

The invention discloses a double-shaft mixing drill with the effect of eliminating soil adhesion and belongs to the field of pile foundation construction equipment. The double-shaft mixing drill comprises a drill body, mixing blades, a conversion device, a horizontal fixed connection device and a drill rod. The drill rod is a hollow cylindrical rod body, the internal side of the lower end of the drill rod is provided with internal threads, the drill rod is connected with the drill body in a thread mode and is welded with the mixing blades. The conversion device is connected with the drill rodin a buckling mode. The horizontal fixed connection device is connected with the conversion device through bolts. According to double-shaft mixing drill, pressure of an overlying soil layer and friction resistance in cutting soil body are effectively reduced, the problem that soil body which is loose due to stir around a mixing shaft rotates with a mixing shaft instrument, and further cement pastewhich is ejected from a whitewashing hole cannot be mixed with soft soil uniformly and quality of built-up pile is affected. Coating body of the drill body is eliminated through the double-shaft mixing drill, cement-mixed content, and mixing uniformity of the cement paste and soil is guaranteed, and returned quantity of the cement paste is reduced.

Description

technical field [0001] The invention belongs to the field of pile foundation construction equipment, and in particular relates to a biaxial stirring drill bit capable of eliminating soil bonding. Background technique [0002] Cement-soil deep mixing pile is a method for strengthening soft soil foundation. It uses cement as a curing agent, and through a special mixing machine and a slurry pump, the soft soil and curing agent are forced to mix and mix in the depth of the foundation. A series of physical and chemical reactions between the agent and the soft soil harden the soft soil into a composite foundation with integrity, water stability and high foundation bearing capacity. Deep mixing technology has been officially put into practice in engineering since the 1970s, and has been widely used in the construction of industrial and civil buildings, subways, highways, municipalities, water conservancy, port waterways and offshore facilities. In deep mixing construction, a deep ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/46E21B10/43E21B10/61E21B17/00E21B12/06
CPCE02D5/46E21B10/43E21B10/61E21B17/00E21B12/06
Inventor 宋伟杰李建平朱庆凯刘光磊
Owner BEIJING ZHONGYAN DADI TECH CO LTD
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