CN103046552B - High-pressure vibro-grouting basement process drill tool assembly - Google Patents

High-pressure vibro-grouting basement process drill tool assembly Download PDF

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Publication number
CN103046552B
CN103046552B CN201310035780.9A CN201310035780A CN103046552B CN 103046552 B CN103046552 B CN 103046552B CN 201310035780 A CN201310035780 A CN 201310035780A CN 103046552 B CN103046552 B CN 103046552B
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drilling rod
pressure
tool assembly
pressure chamber
grouting
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CN103046552A (en
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张绍虎
徐少华
董传明
滕浙良
白彦平
叶飞
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Anhui Water Resources Development Co Ltd
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Anhui Water Resources Development Co Ltd
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  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Earth Drilling (AREA)

Abstract

The present invention gives a kind of high-pressure vibro-grouting basement process drill tool assembly, comprise drill bit and drilling rod, separative tracheae and material pipe are set in drilling rod, material pipe is communicated with the material spraying hole of opening on drilling rod lower sides, drilling rod lower end is fixedly connected with drill bit, equal pressure chamber is provided with in drilling rod bottom, tracheae communicates with equal pressure chamber, equal pressure chamber sidewall has two or more and the fumarole communicated outside drilling rod, after adopting this drill tool assembly, pressure-air can be made more fully to cut soil layer, pressure during inject high pressure air evenly, and can fully Forced Mixing soil and cement grout.

Description

High-pressure vibro-grouting basement process drill tool assembly
Technical field
The present invention relates to a kind of drill tool assembly, particularly a kind of high-pressure vibro-grouting basement process drill tool assembly.
Background technology
The method of current geotechnical engineering impervious consolidation is for boring spray integrated high-pressure jet grouting, a kind of reciprocating high-pressure injection grouting foundation anti-seepage reinforcement method, melt boring to be integrated with high spray, water is installed in drilling rod or starches gentle high-pressure injection pipeline, outfit conveying is starched and water is gentle and lifting means, bore position is moved to by boring the walking chassis of filling with one, carry out drilling construction, high pressure slurry pump conveying high-pressure medium when creeping into, air compressor machine conveying high-pressure gas is opened when needing, high-pressure medium sprays prime stratum around boring, cutting forms boring, from bottom to top high pressure jet grouting is carried out again after arriving projected depth, and make mixing material, cement grout finally forms cement-soil curtain in soil layer.
Its drill tool assembly structure comprises drill bit and drilling rod, separative tracheae and material pipe are set in drilling rod, material pipe is communicated with the material spraying hole of opening at drilling rod lower sides, tracheae is communicated with the fumarole of opening at drilling rod lower sides, drilling rod lower end is fixedly connected with drill bit, chisel edge has cutting tip, is used for cutting stratum.
Because above-mentioned drill tool assembly only has a single fumarole, the blind area of cutting is there is when cuts formation, and during spray operation, the pressure-air ejected from fumarole needs agitate water slurry liquid and the soil layer cutting, form mixed serum, existing drill tool assembly is difficult to make the cement grout in boring and the abundant Forced Mixing of soil layer, can form soil layer block, affect cement-soil curtain intensity in boring of being everlasting.
Summary of the invention
Technical problem to be solved by this invention be to provide pressure when a kind of pressure-air more fully cuts soil layer, inject high pressure air evenly, and can the high-pressure vibro-grouting basement process drill tool assembly of fully Forced Mixing soil and cement grout.
For solving the problems of the technologies described above, the invention provides high-pressure vibro-grouting basement process drill tool assembly, comprise drill bit and drilling rod, separative tracheae and material pipe are set in drilling rod, material pipe is communicated with the material spraying hole of opening on drilling rod lower sides, and drilling rod lower end is fixedly connected with drill bit, it is characterized in that: be provided with equal pressure chamber in drilling rod bottom, tracheae communicates with equal pressure chamber, and equal pressure chamber sidewall has two or more and the fumarole communicated outside drilling rod.
After adopting such structure, pressure-air is delivered in equal pressure chamber by the tracheae of drilling rod, then spray outward along multiple fumarole on equal pressure chamber sidewall towards drilling rod, make pressure-air along with soil layer around drill bit rotational cutting bit, the pressure of the pressure-air that equal pressure chamber can eject evenly, by the feature that atmospheric density is little, the rising that the air in boring can more disperse is until discharge boring, in the process that air rises, abundant Forced Mixing soil and cement grout
There are 45 ° of inclination angles in the anterior direction of fumarole deflection drill bit of this drilling tool, and soil layer pressure-air being acted on do not cut or cutting, utilizes the pressure of pressure-air to facilitate drill bit to cut soil layer, and can increase the effect of Forced Mixing soil and cement grout.
The fumarole section area sum of this drilling tool is not more than tracheae section area, adopts such structure can ensure the atmospheric pressure that fumarole sprays.
The drilling rod cross section of this drilling tool is square, and square drilling rod has space in rotary course and between boring to adopt such structural advantages to be, the pressure-air that conveniently makes fumarole eject discharges boring, and accelerates mixing of cement grout and soil layer.
The equal pressure chamber interior shape of this drilling tool is corresponding square in drilling rod cross section, the four sides sidewall of equal pressure chamber is uniform-distribution with respectively three fumaroles, adopt such structure, three, every face fumarole can make that the pressure-air sprayed more disperses, pressure evenly, stir soil layer effect best.
Below conveniently understand and high-pressure vibro-grouting basement process drill tool assembly is simply called drill tool assembly.
Accompanying drawing explanation
Fig. 1 is the front view of this drill tool assembly.
Fig. 2 is the sectional view that this drill tool assembly prolongs A-A direction.
Fig. 3 is the sectional view that this drill tool assembly prolongs B-B direction.
Detailed description of the invention
As Figure 1-3, drill tool assembly comprises drill bit 2 and drilling rod 1, the cross sectional shape of drilling rod 1 is square, drilling rod 1 includes separative two carrier pipes, two carrier pipes are the tracheae 11 of conveying high-pressure air, conveying high-pressure water or the material pipe 12 of high pressure cement slurries respectively, the radial direction of drilling rod 1 lower sides has material spraying hole 12a, and material pipe 12 is communicated with material spraying hole 12a;
The diameter of the tracheae 11 in drilling rod 1 is 31mm, the square equal pressure chamber 13 that drilling rod 1 bottom has cross sectional shape corresponding with drilling rod 1 cross section, tracheae 11 is communicated with equal pressure chamber 13, the four sides sidewall of equal pressure chamber 13 has 12 fumarole 11a, below fumarole 11a axial direction deflection drill bit 2, there are 45 ° of inclination angles in direction, make pressure-air can prolong fumarole 11a to spray below drill bit 2 with 45 ° of inclination angles, each sidewall of equal pressure chamber 13 is dispersed with three fumarole 11a uniformly, the diameter of each fumarole 11a is 2mm, 12 fumarole 11a section area sums are less than tracheae 11 section area, the internal projecting ring 14 that the lower end of drilling rod 1 is extending in drilling rod, the inwall of internal projecting ring 14 there is screw thread.
Drill bit 2 bottom is cutting tip 21, and drill bit 2 top cross sectional shape is the square connecting portion 22 identical with drilling rod cross section, and there is circular boss 23 connecting portion 22 upper end, boss 23 outer wall has the screw thread that drilling rod 1 internal projecting ring 14 agrees with.
The boss 23 of drill bit 2 is fixedly connected with by screw thread with the internal projecting ring 14 of drilling rod 1, and drilling rod 1 is less than the projection of drill bit 2 horizontal plane in horizontal plane projection.
During use, first brill spray one chassis is moved to bore position, drill bit 2 is arranged on above bore position, ordering about transmission system drives drilling rod 1 and drill bit 2 to horizontally rotate sinking, cutting tip 21 cuts formation of drill bit 2, in the process, water under high pressure prolongs the material spraying hole 12a of drilling rod 1 bottom to drilling rod 1 radial direction cutting drilling rod 1 surrounding formation, and the soil layer around the die-cut drilling rod 1 of water under high pressure becomes stream to mould shape; Pressure-air first arrives equal pressure chamber 13 by tracheae 11, prolongs fumarole 11a afterwards with 45 ° of inclination angle cutting drilling rod 1 surrounding formation, until desired depth forms boring, stops conveying high-pressure water;
Then, material pipe 12 conveying high-pressure cement grout in drilling rod 1, the material spraying hole 12a that high pressure cement slurries prolong drilling rod 1 bottom sprays to the radial direction of drilling rod 1, the soil layer of high pressure cement slurries secondary injection, cutting drilling inwall, make the soil layer of drill hole inner wall evenly, compactness is improved; This process mesohigh air still prolongs fumarole 11a with 45 ° of Jet with downward flow directions, three, every face fumarole 11a can make spray pressure-air evenly, do not spray blind area, and by the feature that atmospheric density is little, air in boring can rise until discharge boring, in the process that air rises, abundant Forced Mixing soil and cement grout;
Ordering about transmission system drives drilling rod 1 and drill bit 2 upwards to promote, and drill bit 2 rises to and exceeds drill hole, stops conveying high-pressure air, when cement grout is full of boring, stops conveying high-pressure cement grout, bores spray integrated high-pressure jet grouting and terminates.
Above-described is only one embodiment of the present invention; should be understood that; for the person of ordinary skill of the art; under the premise without departing from the principles of the invention; some modification and improvement can also be made; these also should be considered as belonging to protection scope of the present invention, and such as, the number of fumarole 11a, fumarole 11a are partial to angle below drill bit etc.

Claims (3)

1. high-pressure vibro-grouting basement process drill tool assembly, comprise drill bit and drilling rod, separative tracheae and material pipe are set in drilling rod, material pipe is communicated with the material spraying hole of opening on drilling rod lower sides, drilling rod lower end is fixedly connected with drill bit, it is characterized in that: be provided with equal pressure chamber in drilling rod bottom, tracheae communicates with equal pressure chamber, and equal pressure chamber sidewall has two or more and the fumarole communicated outside drilling rod;
There are 45 ° of inclination angles in the described anterior direction of fumarole deflection drill bit;
Described fumarole section area sum is not more than tracheae section area.
2. high-pressure vibro-grouting basement process drill tool assembly according to claim 1, is characterized in that: described drilling rod cross section is square.
3. high-pressure vibro-grouting basement process drill tool assembly according to claim 2, is characterized in that: described equal pressure chamber interior shape is corresponding square in drilling rod cross section, the four sides sidewall of equal pressure chamber is uniform-distribution with respectively three fumaroles.
CN201310035780.9A 2013-01-30 2013-01-30 High-pressure vibro-grouting basement process drill tool assembly Active CN103046552B (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105545217A (en) * 2015-12-08 2016-05-04 四川大学 Prismatic pneumatic fracturing soil loosening device
CN106639915A (en) * 2017-01-11 2017-05-10 中国化学工程重型机械化公司 Construction device for long-spiral filling pile and construction process thereof
CN110820789A (en) * 2019-11-21 2020-02-21 太原理工大学 Synchronous water injection humidifying device for lime-soil compaction pile
CN113622413B (en) * 2021-09-22 2022-11-18 山东源基建设工程有限公司 Rotary-spraying expanding spiral soil-squeezing combined cast-in-place pile and pile forming method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5950742A (en) * 1997-04-15 1999-09-14 Camco International Inc. Methods and related equipment for rotary drilling
CN2890313Y (en) * 2006-04-28 2007-04-18 靳宇男 Internal-combustion jet-flow hole digger
CN201184149Y (en) * 2008-04-24 2009-01-21 西南石油大学 Deposition crumbs-proof drilling tool
CN202017209U (en) * 2011-03-10 2011-10-26 上海城地建设发展有限公司 Middle-digging novel high-pressure slurry spraying head structure
CN203080527U (en) * 2013-01-30 2013-07-24 安徽水利开发股份有限公司 Drilling and spraying integrated foundation treating drilling tool assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5950742A (en) * 1997-04-15 1999-09-14 Camco International Inc. Methods and related equipment for rotary drilling
CN2890313Y (en) * 2006-04-28 2007-04-18 靳宇男 Internal-combustion jet-flow hole digger
CN201184149Y (en) * 2008-04-24 2009-01-21 西南石油大学 Deposition crumbs-proof drilling tool
CN202017209U (en) * 2011-03-10 2011-10-26 上海城地建设发展有限公司 Middle-digging novel high-pressure slurry spraying head structure
CN203080527U (en) * 2013-01-30 2013-07-24 安徽水利开发股份有限公司 Drilling and spraying integrated foundation treating drilling tool assembly

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Effective date of registration: 20190628

Address after: 233010 No. 5183 Donghai Avenue, Bengbu City, Anhui Province

Patentee after: Anhui Water Resources Development Co., Ltd.

Address before: 233010 South of Zhanggongshan Road, Donghai Avenue, Bengbu City, Anhui Province

Patentee before: Anhui Water Resources Development Co., Ltd.