CN105178858B - A kind of drilling tool for two-tube high-pressure rotary-spray technique - Google Patents
A kind of drilling tool for two-tube high-pressure rotary-spray technique Download PDFInfo
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- CN105178858B CN105178858B CN201510650078.2A CN201510650078A CN105178858B CN 105178858 B CN105178858 B CN 105178858B CN 201510650078 A CN201510650078 A CN 201510650078A CN 105178858 B CN105178858 B CN 105178858B
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- drilling rod
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- core pipe
- drill
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Abstract
The invention discloses a kind of drilling tool for two-tube high-pressure rotary-spray technique, it is included into slurry assembly, drilling rod, drill bit, it is described to enter to starch assembly and include slurry intake channel, the first height and be pressed into slurry core pipe, inlet channel, the first tracheae, second is provided with drilling rod and enters to starch core pipe, the second tracheae, drill bushing is provided with the lower end of drilling rod, three-way connection is provided with drill bushing, the exit of lower end two of three-way connection is respectively provided with high-pressure mortar spraying mouth, and venthole is provided with the lower end of drill bushing.The present invention is by setting slurry intake channel and inlet channel, water under high pressure mud and air two media injection stream transverse jet are projected simultaneously with two pipes, the impact failure soil body, with the rotation, swing and lifting of drilling tool, in high pressure slurries and under the collective effect of its outer ring circling gas flow, the energy for destroying the soil body significantly increases, slurries are mixed with grogs action of forced stirring, a cylindric induration is formed after solidification, to reach the purpose of consolidated subsoil or sealing antiseepage, efficiency of construction and the quality of pile are effectively increased.
Description
Technical field
The present invention relates to a kind of drilling tool for two-tube high-pressure rotary-spray technique.
Background technology
Currently in construction of soft soil treatment field, the method for common foundation stabilization is cement injection method, is by cement grout
It is injected into ground, to strengthen the bearing capacity of ground.During cement injection, constructed, adopted frequently with single channel drilling tool
With dry spray or wet shot stirring technique, but then have that function is single using above-mentioned single channel drilling tool equipment construction, bad adaptability lacks
Point, in the case where having undercurrent or the larger Soft Clay environment of humidity（Such as coastal, riverine area）During construction, injection slurries are easily with dark
Stream flows away, and pile-forming effect is poor.And the drilling rod of existing drilling tool is connected by joint by multistage drilling rod and formed, man-hour requirement weight is being applied
Drilling rod is dismounted again, is wasted time and energy.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of pile effect for above-mentioned the shortcomings of the prior art
Fruit is good, and the drilling tool for two-tube high-pressure rotary-spray technique of dismounting drilling rod need not be repeated in construction.
The technical solution adopted in the present invention is：A kind of drilling tool for two-tube high-pressure rotary-spray technique, it includes total into slurry
Into, with entering to starch the drilling rod that assembly is connected and the drill bit being connected with drilling rod lower end, it is characterised in that it is described enter starch assembly include into
Slurry passage, first be tightly connected with slurry intake channel enter to starch core pipe, inlet channel, the first gas being tightly connected with inlet channel
Pipe, first air pipe sleeve enters to starch outside core pipe mounted in first, second is provided with drilling rod enters to starch core pipe and first and enter to starch core pipe
Connection, enters to starch and is provided with the second tracheae being connected with the first tracheae between core pipe in drilling rod with second, connects in the lower end of drilling rod
Drill bushing is connected to, three-way connection is provided with drill bushing, the upper end endoporus of the three-way connection and second enter to starch core pipe sealed connection,
The exit of lower end two of three-way connection is respectively provided with high-pressure mortar spraying mouth, is provided between drill bushing and three-way connection and the second tracheae phase
The air chamber of connection, the lower end of drill bushing is provided with the blowing air venthole that is connected with air chamber.
By above-mentioned technical proposal, it is connected in the drill bushing by Conic thread rod with drilling rod.
By above-mentioned technical proposal, spray set is provided with the lower end of drill bushing, the venthole is arranged on spray and put.
By above-mentioned technical proposal, the air chamber includes upper chamber and lower chamber, is set between the second tracheae and three-way connection
Certain axial spacing is equipped with, forms upper chamber, radial direction spacing is provided between spray set and high-pressure mortar spraying mouth, forms lower gas
Room, axially eccentric hole is provided with three-way connection, axially eccentric hole connection upper chamber and lower chamber.
By above-mentioned technical proposal, the drill bit is taper bit.
By above-mentioned technical proposal, it is connected with more second in turn in drilling rod and enters to starch core pipe, adjacent second enters to starch core pipe and lead to
Transit joint sealed connection is crossed, in the centrally disposed flowing hole of the transit joint.
By above-mentioned technical proposal, multiple second tracheaes are provided with drilling rod, each second tracheae is sequentially connected, and adjacent
Two tracheaes are connected by dead joint, and the dead joint is welded and fixed with drill pipe slip.
It is described to enter to starch assembly and by drilling rod flange with drilling rod be connected by above-mentioned technical proposal.
By above-mentioned technical proposal, the drilling rod is replaced successively by sleeve pipe with drill pipe slip to be welded.
Having the beneficial effect that acquired by the present invention：1st, the present invention is by setting high pressure slurry intake channel and low-pressure admission bilateral
Road, behind the precalculated position of drill bit drilling soil layer, while water under high pressure mud and low-pressure air two media transverse jet are projected, its
In, the pressure of the slurries in high pressure slurry intake channel is up to 20~40MPa, and it forms jet action, for being punched, disturbing, destroying
The soil body, with the rotation, swing and lifting of drilling tool, in high pressure slurries and under the collective effect of its outer ring circling gas flow, destroy
The energy of the soil body is significantly increased, and slurries are mixed with grogs action of forced stirring, and after grout cures, formation one is cylindric solid in soil
Knot body（That is rotary churning pile）, to reach the purpose of consolidated subsoil or sealing antiseepage, effectively increase efficiency of construction and the quality of pile.
2nd, the present invention is mixed using jet action cutting stirs stratum, need not set stirring vane again in bit exterior, further simplify
The structure of drill bit；3rd, drilling rod of the invention is replaced successively by sleeve pipe with drill pipe slip is welded, and makes the height of drilling rod integrally solid
Fixed, it is driven in work progress by dynamical system, and dismounting drilling rod need not be repeated in construction, time saving and energy saving；4th, this hair
It is bright by soil layer, soil granularity, soil density, curing agent viscosity, curing agent firm time influenceed it is small, can be widely applied to mud,
Muck soil, cohesive soil, silty clay,（Lam）, silt（Sandy loam）, sand, the plain fill in loess and artificial earth fill
Even a variety of soil layers such as gravelly soil, can be used as the foundation stabilization of existing building and new building, also can based on antiseepage
It is used；Can be as the interim measure in construction（Such as deep-foundation side wall earth-retaining or dash, water protecting curtain）, can also be used as and forever build
Build foundation stabilization, the Anti-seeping technology of thing.
Brief description of the drawings
Fig. 1 is the structure chart of the present invention.
Fig. 2 is to enter to starch the structure chart of assembly in the present invention.
Fig. 3 is the structure chart of drilling rod upper end in the present invention.
Fig. 4 is the structure chart of drill bit in the present invention.
Fig. 5 is the outline drawing of drill bit in the present invention.
Fig. 6 is the main sectional view of three-way connection in the present invention.
Fig. 7 is the top view of three-way connection in the present invention.
In figure, 1, enter to starch elbow, 2, seal, 3, air inlet elbow, 4, core pipe, 5, double flanges, 6, seal assembly, 7, vat
Set, 8, first enters to starch core pipe, the 9, first tracheae, and 10, drilling rod upper flange, 11, drilling rod lower flange, 12, second enters to starch core pipe, 13,
Second tracheae, 14, drilling rod, 15, dead joint, 16, transit joint, 17, fixed cover, 18, drill pipe slip, 19, Conic thread rod, 20, side
Set, 21, bit sub, 22, drill bushing, 23, three-way connection, 24, high-pressure mortar spraying mouth, 25, spray set, 26, spray block set, 27 drill bits, 28, on
Air chamber, 29, lower chamber, 30, venthole, 31, axially eccentric hole.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, 2, 3, a kind of drilling tool for two-tube high-pressure rotary-spray technique is present embodiments provided, it is included into slurry
Assembly, with entering to starch assembly pass through the upper and lower drilling rod 14 being connected of flange 10,11 of drilling rod and the tapered bur being connected with drilling rod lower end
First 27.
It is described enter starch assembly include by enter to starch elbow 1, air inlet elbow 3, seal 2, double flanges 5, core pipe 4, big cylinder sleeve 7,
First tracheae 9 and seal assembly 6, bearing composition.Seal pipe 2, big cylinder sleeve 7 are linked together by double flanges 5 by bolt, close
Air inlet elbow 3 is installed on the side of tube sealing 2, top is installed into slurry elbow 1, first enters to starch and is used between core pipe 8 and seal pipe 2
UN types sealing ring seals.In the inside of big cylinder sleeve 7, core pipe 4 is set, core pipe 4 is sleeved on first and enters to starch outside core pipe 8, its upper end with it is close
Inlet channel in envelope body 2 is connected, and has both also functioned to the effect that protection first enters to starch core pipe 8 as inlet channel, under core pipe 4
End is connected with the first tracheae 9.Rolling bearing is housed between the big tracheae 9 of cylinder sleeve 7 and first, makes the first tracheae 9 relative to vat
Set 5 can rotate.First, which enters to starch core pipe 8, uses integral solder form, ensures the sealing effectiveness of high pressure slurries.
The drilling rod 14 is replaced successively by sleeve pipe with drill pipe slip 18 to be welded, and the height of drilling rod is integrally fixed, its
Driven in work progress by dynamical system, dismounting drilling rod need not be repeated in construction, it is time saving and energy saving.Set in drilling rod 14
It is equipped with second and enters to starch core pipe 12 and enter to starch core pipe 8 with first to connect, each core pipe 12 is sequentially connected, and adjacent second enters to starch core pipe and pass through
Transit joint 16 is tightly connected, and in the centrally disposed flowing hole of the transit joint 16, enters to starch core for connecting adjacent second
The centre bore of pipe；Enter to starch with second in drilling rod 14 and be provided with the second tracheae 13 being connected with the first tracheae between core pipe 12, respectively
Individual second tracheae 13 is sequentially connected, and adjacent second tracheae is connected by dead joint 15, and the dead joint 15 welds with drill pipe slip 18
Connect fixation.The lower end of drilling rod 14 is connected with bit sub 21, drill bushing 22 in turn by Conic thread rod 19, in Conic thread rod 19 and bit sub 21
Square set 20 is provided with outside, three-way connection 23 is provided with drill bushing 22, the upper end endoporus of the three-way connection 23 and second enter slurry
Core pipe is tightly connected, and the exit of lower end two of three-way connection is sealedly connected with high-pressure mortar spraying mouth 24, connected in drill bushing 20 with three
The plenum chamber being connected with the second tracheae is provided between first 23, spray block set 26 is provided with the lower end of drill bushing 22, in nozzle
Spray set 25 is provided with seat 26, wherein, spray set 25 is corresponding with high-pressure mortar spraying mouth 24, and air venthole is provided with spray set 25
30 are connected with air chamber.The air chamber includes upper chamber 28 and lower chamber 29, is provided between the second tracheae and three-way connection
Certain axial spacing, upper chamber 28 is formed, radial direction spacing is provided between spray set 25 and high-pressure mortar spraying mouth 24, form lower gas
Room 29, axially eccentric hole 31 is provided with three-way connection 23, the axially eccentric hole 31 connects upper chamber and lower chamber.
The present invention in drilling tool by setting high pressure slurry intake channel and low-pressure admission passage, when making a reservation for for drill bit drilling soil layer
Behind position, at the same by water under high pressure mud and low-pressure air two media respectively out of high-pressure mortar spraying mouth 24 and air venthole 30 it is horizontal
To ejecting, wherein, the pressure of the slurries in high pressure slurry intake channel is up to 20~40MPa, and it forms jet action, for rushing
Cut, disturb, destroying the soil body, low-pressure air plays mixing effect, with the rotation, swing and lifting of drilling tool, in high mud jacking
Liquid and under the collective effect of its outer ring circling gas flow, the energy for destroying the soil body significantly increases, by slurries and grogs action of forced stirring
Mix, after grout cures, a cylindric induration is formed in soil（That is rotary churning pile）, to reach consolidated subsoil or sealing antiseepage
Purpose.
Claims (6)
1. a kind of drilling tool for two-tube high-pressure rotary-spray technique, it includes into slurry assembly, with enter to starch drilling rod that assembly is connected and with
The drill bit that drilling rod lower end is connected, it is characterised in that described to enter to starch what assembly was tightly connected including slurry intake channel, with slurry intake channel
First enters to starch core pipe, inlet channel, the first tracheae being tightly connected with inlet channel, and first air pipe sleeve enters slurry mounted in first
Outside core pipe, second is provided with drilling rod and enters to starch core pipe and enter to starch core pipe with first to connect, between drilling rod and second enter to starch core pipe
The second tracheae being connected with the first tracheae is provided with, drill bushing is connected with the lower end of drilling rod, three is provided with drill bushing and is connected
Head, the upper end endoporus of the three-way connection and second enter to starch core pipe sealed connection, and the exit of lower end two of three-way connection is respectively provided with
High-pressure mortar spraying mouth, the air chamber being connected with the second tracheae is provided between drill bushing and three-way connection, is set in the lower end of drill bushing
There is the venthole that is connected with air chamber, the air chamber includes upper chamber and lower chamber, set between the second tracheae and three-way connection
There is certain axial spacing, form upper chamber, be provided with radial direction spacing between spray set and high-pressure mortar spraying mouth, form lower chamber,
Axial passage is provided with three-way connection, axial the passage connection upper chamber and lower chamber, is connected with turn in drilling rod
More second are entered to starch core pipe, and adjacent second enters to starch core pipe and be tightly connected by transit joint, is set at the center of the transit joint
Flowing hole is put, multiple second tracheaes are provided with drilling rod, each second tracheae is sequentially connected, and adjacent second tracheae is by extremely connecing
Head is connected, and the dead joint is welded and fixed with drill pipe slip.
2. drilling tool according to claim 1, it is characterised in that the drill bushing is connected by Conic thread rod with drilling rod.
3. drilling tool according to claim 1 or 2, it is characterised in that spray set, the venthole are provided with the lower end of drill bushing
Spray is arranged on to put.
4. drilling tool according to claim 1 or 2, it is characterised in that the drill bit is taper bit.
5. drilling tool according to claim 1 or 2, it is characterised in that described to enter to starch assembly and pass through drilling rod flange and drilling rod phase
Connection.
6. drilling tool according to claim 1 or 2, it is characterised in that the drilling rod is replaced successively by sleeve pipe with drill pipe slip
It is welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510650078.2A CN105178858B (en) | 2015-10-10 | 2015-10-10 | A kind of drilling tool for two-tube high-pressure rotary-spray technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510650078.2A CN105178858B (en) | 2015-10-10 | 2015-10-10 | A kind of drilling tool for two-tube high-pressure rotary-spray technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105178858A CN105178858A (en) | 2015-12-23 |
| CN105178858B true CN105178858B (en) | 2018-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988306B (en) * | 2017-03-09 | 2021-06-01 | 山东省建筑科学研究院 | Drilling tool for stirring rotary jetting |
| CN110424890A (en) * | 2019-08-11 | 2019-11-08 | 叶江清 | A kind of percussion mechanism and multi-functional down-the-hole device |
| CN114622540B (en) * | 2022-03-11 | 2024-04-19 | 浙江新盛建设集团有限公司 | High-pressure punching construction device for top of forming constructional column |
| CN115488144A (en) * | 2022-09-23 | 2022-12-20 | 同济大学 | In-situ repair device and equipment for double-pipe double-channel liquid adding, powder spraying and stirring |
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