CN106481289B - Auger stem, drilling machine and by the molding stake holes of auger stem and VDS bored concrete pile - Google Patents
Auger stem, drilling machine and by the molding stake holes of auger stem and VDS bored concrete pile Download PDFInfo
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- CN106481289B CN106481289B CN201611145464.7A CN201611145464A CN106481289B CN 106481289 B CN106481289 B CN 106481289B CN 201611145464 A CN201611145464 A CN 201611145464A CN 106481289 B CN106481289 B CN 106481289B
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- 238000005553 drilling Methods 0.000 title claims abstract description 47
- 238000000465 moulding Methods 0.000 title claims abstract description 7
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 51
- 230000015572 biosynthetic process Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 description 12
- 238000010276 construction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 241001074085 Scophthalmus aquosus Species 0.000 description 4
- 239000003570 air Substances 0.000 description 3
- 238000005056 compaction Methods 0.000 description 3
- 230000010412 perfusion Effects 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 238000012407 engineering method Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000010410 reperfusion Effects 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B6/00—Drives for drilling with combined rotary and percussive action
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structural Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Paleontology (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to auger stem, drilling machine and by the molding stake holes of auger stem and VDS bored concrete pile, auger stem includes the intermediate body of rod and the helical blade for being set to intermediate bar external week, helical blade is constituted by least two along the blade unit that the hand of spiral of helical blade is sequentially arranged, wherein at least one blade unit is with along the hand of spiral, by the narrow reducer to broaden, there is reducer width the reducer for squeezing corresponding boring mud and/or concrete to squeeze circumferential surface from the bottom to top.The present invention solves the problems, such as that the stake holes hole wall that existing auger stem molds cannot provide higher collateral resistance for concrete-pile bar.
Description
Technical field
The present invention relates to auger stem, the drilling machines and by the molding stake holes of auger stem and VDS bored concrete pile in stake work field.
Background technique
Auger stem is the common drilling rod in a work field, and existing auger stem includes the intermediate body of rod and is set to centre
The helical blade of body of rod periphery, helical blade are isometrical equal wall thickness structure.In the operation of stake work, auger stem is by the power of drilling machine
Head drives and Auger drilling, and in drilling process, the boring mud generated due to drilling is transported to along the upper surface of helical blade
Earth's surface, after stake holes is formed, the concrete perfusion into stake holes, cured concrete, that is, concrete-pile bar and stake holes hole wall, stake holes
Bottom hole is formed together bored concrete pile.The purpose of pile foundation construction is that raising bearing capacity, bearing capacity derive from stratum, and stratum is that have solid
Particle, air and water composition, improve density of solid particles discharge air and stratum bearing capacity desirable parameters can be improved in water.Stake by
Power is sufficiently closed from the collateral resistance on stake holes hole wall stratum and the bottom bearing of stake holes bottom hole supporting course according to the Force principle of stake
It is the problem of pile foundation industry is inquired into always that reason, which is called and improves stratum desirable parameters with the bearing capacity for improving stake,.
And in the prior art, conventional auger stem is only capable of playing the purpose for conveying boring mud from the bottom to top, drilling
Hole wall cannot obtain compacted plus real, and stake holes hole wall cannot be for concrete-pile bar provides higher collateral resistance and leads to the carrying of bored concrete pile
Power is not very high.The major technique for improving stake week collateral resistance and stake bottom end load to improve bearing capacity is surrounded in the prior art
Have: withstanding forces area using the end that support disk pile and DX are intended to increase stake, although bearing capacity effect is ideal, moved again after pore-forming
Machine is put into the expanding pile after fishing out slag telephone-moving again of expander, construction technology very complicated.Pass through reserved note after post -grou ting -filling -pile
Slurry pipe is intended to improve a bottom end load and stake week collateral resistance to stake bottom and side wall mud jacking, and bearing power increase effect is obvious, but cement
Slurry pressure filling poor controllability stake easily occurs and pile bearing capacity difference is big.Certainly there are also some other to increase stake week collateral resistance and stake bottom
Engineering method for the purpose of end resistance, but all there is construction complexity for these engineering methods, and mating drill configuration is complicated, drilling machine high failure rate
Etc. various problems.
Summary of the invention
The purpose of the present invention is to provide a kind of auger stem, to solve stake holes hole wall that existing auger stem molds not
The problem of higher collateral resistance capable of being provided for concrete-pile bar；The object of the invention is also to provide a kind of using the auger stem
Drilling machine and the stake holes molded by the auger stem and VDS bored concrete pile.
To solve the above-mentioned problems, the present invention in drilling machine technical solution are as follows:
Drilling machine includes the intermediate body of rod and sets including power mechanism and the auger stem driven by power mechanism, auger stem
It is placed in the helical blade in intermediate bar external week, the leaf that helical blade is sequentially arranged by least two along the hand of spiral of helical blade
Blade unit is constituted, and wherein at least one blade unit is with along the hand of spiral, width is become by the narrow reducer to broaden from the bottom to top
There is diameter section the reducer for squeezing corresponding boring mud and/or concrete to squeeze circumferential surface.
The thickness of some or all of reducer blade unit gradually thickens spaced apart in the axial direction two from the bottom to top
Spacing between a blade unit gradually becomes smaller from the bottom to top, so that boring mud or more running track change is reached allotment boring mud up and down and arrives
The compacted purpose in the relatively small position of hole wall lateral confinement power.
Blade unit further includes isometrical section along hand of spiral equivalent width from the bottom to top in reducer upper end, isometrical
Section has the isometrical section of extruding circumferential surface for squeezing the boring mud and/or concrete, some or all of isometrical section blade unit
Thickness gradually thicken from the bottom to top.
The technical solution of auger stem in the present invention are as follows:
Auger stem including the intermediate body of rod and is set to the external all helical blades of intermediate bar, and helical blade is by least two
The blade unit that a hand of spiral along helical blade is sequentially arranged is constituted, and wherein at least one blade unit has along spiral side
To width from the bottom to top by the narrow reducer to broaden, reducer has the reducer for squeezing corresponding boring mud and/or concrete
Squeeze circumferential surface.
The thickness of some or all of reducer blade unit gradually thickens spaced apart in the axial direction two from the bottom to top
Spacing between a blade unit gradually becomes smaller from the bottom to top, so that boring mud or more running track change is reached allotment boring mud up and down and arrives
The compacted purpose in the relatively small position of hole wall lateral confinement power.
Blade unit further includes isometrical section along hand of spiral equivalent width from the bottom to top in reducer upper end, isometrical
Section has the isometrical section of extruding circumferential surface for squeezing the boring mud and/or concrete, some or all of isometrical section blade unit
Thickness gradually thicken from the bottom to top.
The technical solution of VDS bored concrete pile in the present invention are as follows:
VDS bored concrete pile, including stake holes and the concrete-pile bar being placed in stake holes, the hole wall of stake holes by with the concrete-pile
The compacted body of annular of bar contact is constituted, and the compacted body of annular includes annular ground layer, is had in annular ground layer for by blade unit
Reducer squeeze circumferential surface and squeeze and submerge the boring mud and/or concrete in the annular ground layer.
The thickness that the compacted body of annular corresponds to soft formation is greater than the thickness that the compacted body of annular corresponds to hard formation.
The technical solution of stake holes in the present invention are as follows:
Stake holes, the hole wall of stake holes are made of the compacted body of annular, and the compacted body of annular includes annular ground layer, in annular ground layer
Have and submerges the boring mud and/or concrete in the annular ground layer for squeezing circumferential surface extruding by the reducer of blade unit.
The thickness that the compacted body of annular corresponds to soft formation is greater than the thickness that the compacted body of annular corresponds to hard formation.
The invention has the benefit that using the auger stem in the present invention in drilling construction, auger stem rotary drilling
Into since the boring mud that drilling process generates then is conveyed along helical blade upward, since at least one blade unit has along spiral shell
Revolving direction, width is by the narrow reducer to broaden from the bottom to top, therefore boring mud can fall into the outer of reducer at the variable diameter fragment position
Side, with the rotation of helical blade, boring mud squeezes circumferential surface extruding by the reducer of reducer and carries out the centrifugation outside by center
Formula movement, the reducer of reducer squeeze circumferential surface and boring mud are squeezed into annular ground layer and is formed and is used to constitute stake holes hole wall
The compacted body of annular, by the extruding of boring mud, annular ground layer is squeezed close plus reality, moisture and air and is excluded, annular ground layer
Density is increased, so that stake holes hole wall can provide higher collateral resistance for concrete-pile bar.
Further, the thickness of some or all of reducer blade unit gradually thickens from the bottom to top, this aspect meeting
Increase the area that reducer squeezes circumferential surface, extruding efficiency is improved, in addition but also two blade lists spaced apart in the axial direction
Spacing between member gradually becomes smaller from the bottom to top, that is to say, that and the correspondence lead of helical blade becomes narrow gradually from the bottom to top,
This is conducive to more boring muds or concrete is pressed against on the outside of helical blade, is conducive to boring mud or concrete preferably centrifugal fortune
It is dynamic, be conducive to boring mud and deploy operation reinforcing up and down to the lesser soft formation of opposite side limiter.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment 1 of drilling machine in the present invention；
Fig. 2 is the cooperation schematic diagram of helical blade and the intermediate body of rod in Fig. 1；
Fig. 3 is the top view of Fig. 2；
Fig. 4 is the structural schematic diagram of the embodiment 2 of drilling machine in the present invention；
Fig. 5 is the structural schematic diagram of the embodiment 1 of VDS bored concrete pile in the present invention；
Fig. 6 is the structural schematic diagram of the embodiment 2 of VDS bored concrete pile in the present invention.
Specific embodiment
The embodiment 1 of drilling machine is as shown in Fig. 1 ~ 3: including power mechanism and the auger stem driven by power mechanism, spiral
Drilling rod includes the intermediate body of rod 2 and the helical blade 3 for being set to intermediate bar external week, and the intermediate body of rod is one and vertically extends
Isometrical hollow bar structure.Power mechanism includes the power head 1 of outputting rotary power and exports the impactor for vibrating power, wherein
The structure of power head and impactor and Publication No. CN103277044A, application are entitled " SDL work driving methods and to be exclusively used in
Power head is identical with impactor in the patent publication of the pile work drilling machine of implementation this method ", and this will not be detailed here.
Helical blade 3 is made of the sequentially connected blade unit 31 of multiple hands of spiral along helical blade, each leaf
Blade unit 31 all have along the hand of spiral from the bottom to top width by the narrow reducer 32 to broaden and the edge for being set to reducer upper end
A indicates the line of demarcation of reducer 32 with isometrical section 33 to the hand of spiral in isometrical section of 33, Fig. 2 of equivalent width from the bottom to top.Variable diameter
Section 32 squeezes circumferential surface 34 with the reducer for squeezing corresponding boring mud and/or concrete, and isometrical section 33 has for squeezing brill
Isometrical section of extruding circumferential surface 35 of slag and/or concrete.The thickness of the upper end blade unit of reducer gradually thickens from the bottom to top, etc.
The consistency of thickness of the upper end of diameter section, the thickness of rest part gradually thicken from the bottom to top, the variation of blade unit thickness so that
Spacing between two blade units 31 spaced apart in the axial direction gradually becomes smaller from the bottom to top.
In drilling construction, auger stem rotary drilling under power head driving, the drill bit of auger stem lower end can be drilled out
Boring mud, boring mud are delivered up along the upper surface of helical blade, when boring mud is delivered to the upper end of each blade unit, because of phase therewith
There are reducers for adjacent blade unit, therefore boring mud can be fallen on the outside of the reducer extruding circumferential surface of reducer, with auger stem
Continue rotate, reducer squeezes circumferential surface and squeezes boring mud outwardly, and finally boring mud is extruded onto annular ground layer, isometrical section of extruding
Circumferential surface, which plays, consolidates compacted effect.In addition, the thickness of the body position of blade unit gradually increases, in this way to the extruding of boring mud
Area is also being gradually increased, so as to play to the better squeezing effect of boring mud, while but also more boring mud carry out from
The heart moves and moves to the outside of helical blade, when the boring mud amount that annular ground layer can submerge reaches capacity, extra brill
Slag can be easily discharged out of the hole.Reducer is exactly there are one effect, and in auger stem percussion drilling, reducer squeezes circumferential surface and stake holes
There is sufficient space to receive the vertical impact force from power head between hole wall, reduce boring mud to the vertical impact force of helical blade,
Working efficiency is improved, reduces the kinetic energy loss to impactor, while guaranteeing the service life of helical blade.When drilling arrives bottom hole
It stops rotating, the vertical impact force of impactor is transmitted downwards by auger stem, to tamp compacted bottom hole supporting course.Then may be used
With the inner hole using drilling rod, into drilling, concrete perfusion, one side concrete perfusion above mention auger stem on one side, while making spiral
Drilling rod rotation, should during, reducer squeezes circumferential surface and isometrical section of extrudings circumferential surface can will be there are no cured concrete extrusion
Into annular ground layer, ground layer annular in this way and the boring mud and concrete that are extruded into annular ground layer constitute annular together
Compacted body, that is, stake holes hole wall, the concrete in concrete and annular ground layer after concrete curing in stake holes, in stake holes
It is solidified into overall structure, ultimately forms bored concrete pile, substantially increases the bearing capacity of bored concrete pile, because of the molding mode of the bored concrete pile,
The bored concrete pile can be described as VDS bored concrete pile again, and alphabetical V is the first letter of English word " Variety " (variation), alphabetical D
It is the first letter of English word " Diameter " (diameter), S is the first letter of English word " Stick " (bar),
That is VDS bored concrete pile means the drilling rod using diameter change and the bored concrete pile that processes.It is broadened on the intermediate body of rod by narrow
Helical blade form the circular trace changed from small to big with the rotation of the intermediate body of rod, blade is by thin to changing lead thicker than crossing
Become, boring mud and concrete form variable flow-disturbing motion profile in lead and squeeze into borehole wall conducive to reinforcement material.Work as respective layer
The compacted body of annular to certain limit when, boring mud is delivered up and is reinforced to the lesser soft stratum of opposite side limiter, if
The absorbability on stratum is that can squeeze into more boring mud in stratum more by force, then full soil compaction drilling is realized, if the amount of boring mud is super
The absorbability on stratum is crossed, extra boring mud will be transported to earth's surface, realize half soil compaction drilling.The more existing bored concrete pile of the pile-type
Bearing capacity can be improved, reduce boring mud discharge, squeezed drilling compacting bottom hole of constructing once is completed, it can be achieved that soil compaction drilling, half squeeze entirely
Earth boring auger into etc. a variety of Construction Modes, simple for process, reliable in quality, energy conservation and environmental protection, that is, realize it is economical, quickly, energy conservation and environmental protection
Integration objective.
In the other embodiments of this drilling machine: the power mechanism of drilling machine, which is also possible to only have, is capable of outputting rotary power
Power head；The number of blade unit, which can according to need, carries out selection, adjacent blade unit can have it is certain between
Every, certainly also and not all blade unit is required with reducer, such as the blade unit being spaced has reducer, or
Any position that there is person the blade unit of reducer to be in entire helical blade；The blade unit of reducer can also all by
Under supreme thickness gradually thicken；Isometrical section of blade unit all can also gradually thicken from the bottom to top；Certain isometrical section can also
Not set；The auger stem can also be only used in boring procedure, or be only used in slip casting drilling process, when auger stem only
When in boring procedure, the intermediate body of rod is also possible to solid construction.
The embodiment 2 of drilling machine is as shown in Figure 4: unlike the first embodiment, the intermediate body of rod is ladder to the embodiment 2 of drilling machine
Axle construction, the intermediate body of rod of stepped shaft structure include major diameter section 21 and the path section 22 for being set to major diameter section lower end, helical blade 3
It is set to 22 in path section, the outer diameter of major diameter section is consistent with isometrical section of blade unit of outer diameter.
The implementation of auger stem is for example shown in Fig. 1 ~ 4: institute in the specific structure of auger stem and above-mentioned each drilling machine embodiment
The auger stem stated is identical, and this will not be detailed here.
The embodiment 1 of VDS bored concrete pile is as shown in Figure 5: this VDS bored concrete pile, that is, above-mentioned drilling machine VDS as described in the examples is filled
Stake is infused, which includes stake holes and the concrete-pile bar 11 being placed in stake holes, and the hole wall of stake holes with concrete-pile bar by connecing
The compacted body 10 of annular of touching is constituted, and Fig. 5 middle term 9 indicates that the influence body of the compacted body periphery of annular, the compacted body 10 of annular include annular
Ground layer has in annular ground layer and squeezes and submerge in the annular ground layer for squeezing circumferential surface by the reducer of blade unit
Boring mud and concrete.The thickness that the compacted body of annular corresponds to soft formation 7 is greater than the thickness that the compacted body of annular corresponds to hard formation 5
Degree, figure middle term 8 indicate the general stratum in top, and item 6 indicates the general stratum in lower part, and the hardness on general stratum is between hard formation and soft
Between layer.The forming process of the VDS bored concrete pile is already described in above-mentioned drilling machine embodiment, and this will not be detailed here, 4 table of figure middle term
Show the bottom hole compacting body being compacted due to impact, it is and soft because soft formation can squeeze into more boring muds and concrete
The thickness of the corresponding compacted body of annular in stratum will be thicker than the thickness of the compacted body of annular corresponding with hard formation.Of the invention other
In embodiment, if auger stem after drilling if propose drilling, then Reperfu- sion concrete, or when grouting mentions brill,
Auger stem does not rotate, and boring mud will have only been squeezed into annular ground layer；If auger stem is only the use when tank will mention brill, that
Concrete will have only been squeezed into annular ground layer.
The embodiment 2 of VDS bored concrete pile is as shown in Figure 6: the embodiment 2 of VDS bored concrete pile is different from VDS bored concrete pile embodiment 1
, the bottom of concrete-pile bar 11 extends to lithosphere 12, therefore it is closely knit in the bottom hole of stake holes not have the bottom hole that is compacted
The construction of the bored concrete pile can be completed in layer, the drilling machine for only capableing of outputting rotary power.
The implementation of stake holes is for example shown in Fig. 5 ~ 6: the specific structure of stake holes and above-mentioned each VDS bored concrete pile are as described in the examples
Stake holes is identical, and this will not be detailed here.
Claims (8)
1. auger stem including the intermediate body of rod and is set to the external all helical blades of intermediate bar, it is characterised in that: helical blade
It is constituted by least two along the blade unit that the hand of spiral of helical blade is sequentially arranged, wherein at least one blade unit has
Along the hand of spiral, width is by the narrow reducer to broaden from the bottom to top, and reducer is with for squeezing corresponding boring mud and/or concrete
Reducer squeeze circumferential surface；The thickness of some or all of reducer blade unit is gradually thickend from the bottom to top so that in the axial direction
Spacing between spaced apart two blade units gradually becomes smaller from the bottom to top.
2. auger stem according to claim 1, it is characterised in that: blade unit further includes the edge in reducer upper end
Isometrical section of hand of spiral equivalent width from the bottom to top, isometrical section has for squeezing the isometrical of the boring mud and/or concrete
Section squeezes circumferential surface, and the thickness of some or all of isometrical section blade unit gradually thickens from the bottom to top.
3. drilling machine, including power mechanism and the auger stem driven by power mechanism, auger stem includes the intermediate body of rod and setting
In the helical blade in intermediate bar external week, it is characterised in that: helical blade by least two along helical blade the hand of spiral it is suitable
The blade unit of secondary setting is constituted, and wherein at least one blade unit has that width is broadened by narrow from the bottom to top along the hand of spiral
There is the reducer for squeezing corresponding boring mud and/or concrete to squeeze circumferential surface for reducer, reducer；
The thickness of some or all of reducer blade unit is gradually thickend from the bottom to top so that spaced apart in the axial direction two
Spacing between a blade unit gradually becomes smaller from the bottom to top.
4. drilling machine according to claim 3, it is characterised in that: blade unit further includes in reducer upper end along spiral
Isometrical section of direction equivalent width from the bottom to top, isometrical section of isometrical section had for squeezing the boring mud and/or concrete squeeze
Circumferential surface is pressed, the thickness of some or all of isometrical section blade unit gradually thickens from the bottom to top.
5. by the molding VDS bored concrete pile of auger stem described in claim 1, including stake holes and the concrete-pile being placed in stake holes
Bar, it is characterised in that: the hole wall of stake holes is made of the compacted body of annular contacted with the concrete-pile bar, and the compacted body of annular includes
Annular ground layer has in annular ground layer and squeezes for squeezing circumferential surface by the reducer of blade unit and submerge the annular ground
Boring mud and/or concrete in layer.
6. VDS bored concrete pile according to claim 5, it is characterised in that: the thickness that the compacted body of annular corresponds to soft formation is big
Correspond to the thickness of hard formation in the compacted body of annular.
7. by the molding stake holes of auger stem described in claim 1, it is characterised in that: the hole wall of stake holes is by the compacted body structure of annular
At the compacted body of annular includes annular ground layer, has in annular ground layer and squeezes for squeezing circumferential surface by the reducer of blade unit
And submerge the boring mud and/or concrete in the annular ground layer.
8. stake holes according to claim 7, it is characterised in that: the thickness that the compacted body of annular corresponds to soft formation is greater than annular
Compacted body corresponds to the thickness of hard formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611145464.7A CN106481289B (en) | 2016-12-13 | 2016-12-13 | Auger stem, drilling machine and by the molding stake holes of auger stem and VDS bored concrete pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611145464.7A CN106481289B (en) | 2016-12-13 | 2016-12-13 | Auger stem, drilling machine and by the molding stake holes of auger stem and VDS bored concrete pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106481289A CN106481289A (en) | 2017-03-08 |
| CN106481289B true CN106481289B (en) | 2018-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611145464.7A Active CN106481289B (en) | 2016-12-13 | 2016-12-13 | Auger stem, drilling machine and by the molding stake holes of auger stem and VDS bored concrete pile |
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| CN (1) | CN106481289B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1085497A (en) * | 1964-11-04 | 1967-10-04 | Patents Invest And Licenses | Augers for forming holes in the ground |
| CA2061841A1 (en) * | 1991-03-28 | 1992-09-29 | H. Milton Hoff | Helical rod guide |
| JP4026170B2 (en) * | 2001-08-20 | 2007-12-26 | 日本テクノ株式会社 | Screw rod for drilling |
| CN201024891Y (en) * | 2007-04-13 | 2008-02-20 | 中国京冶工程技术有限公司 | Long spiral replaced and compacted driller |
| CN102162248B (en) * | 2011-04-26 | 2012-08-29 | 武汉高铁桩工科技有限公司 | Method for forming variable-cross-section compaction thread pile and compaction drilling tool |
| CN206346718U (en) * | 2016-12-13 | 2017-07-21 | 邵金安 | A kind of auger stem, rig and the stake holes being molded by auger stem and VDS bored concrete piles |
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2016
- 2016-12-13 CN CN201611145464.7A patent/CN106481289B/en active Active
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| CN106481289A (en) | 2017-03-08 |
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