CN108798528A - Abolish the drill bit of waste and old pile pile and the method abolished waste and old pile pile and new pile is perfused - Google Patents
Abolish the drill bit of waste and old pile pile and the method abolished waste and old pile pile and new pile is perfused Download PDFInfo
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- CN108798528A CN108798528A CN201810862809.3A CN201810862809A CN108798528A CN 108798528 A CN108798528 A CN 108798528A CN 201810862809 A CN201810862809 A CN 201810862809A CN 108798528 A CN108798528 A CN 108798528A
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- drill bit
- connector
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- 239000002699 waste material Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 20
- 210000002435 tendon Anatomy 0.000 claims abstract description 27
- 230000002787 reinforcement Effects 0.000 claims abstract description 15
- 238000004140 cleaning Methods 0.000 claims description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 238000005553 drilling Methods 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 210000005069 ears Anatomy 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 238000009987 spinning Methods 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 13
- 230000001360 synchronised effect Effects 0.000 abstract description 5
- 239000011435 rock Substances 0.000 description 7
- 230000007704 transition Effects 0.000 description 4
- 206010008190 Cerebrovascular accident Diseases 0.000 description 2
- 208000006011 Stroke Diseases 0.000 description 2
- 238000004380 ashing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 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
- E21B10/00—Drill bits
- E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/005—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof removing the top of placed piles of sheet piles
-
- 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
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of drill bit for abolishing waste and old pile pile and the methods abolished waste and old pile pile and new pile is perfused, the drill bit includes mandrel, mandrel excircle is equipped with helical blade, the interconnecting piece for being docked with borer drill rod is equipped at the top of mandrel, helical blade at least middle part is to have multiple picks, mandrel bottom is equipped with the vertical reinforcement beam being welded by more bar dowels, and tendon is less than or equal to the internal diameter for being intended to broken waste and old pile pile with the outer diameter of mandrel coaxial line and tendon；The key of its method is：Old stake is crushed and two steps of new pile pore-forming are combined into one, it is synchronous to carry out.The drill bit and method can effectively abolish that depth is more than 20 meters of waste and old pile pile and old stake is abolished and synchronous can be carried out with new stake holes pore-forming so that construction efficiency is accelerated, construction cost reduces.
Description
Technical field
It is especially a kind of drill bit that abolishing waste and old pile pile and using should the present invention relates to construction foundation working technical field
The method that drill bit abolishes waste and old pile pile and new pile is perfused.
Background technology
In urban construction, it is often necessary to by the short demolishing buildings broken always, then build higher more on the base of once visited place
New building.This relates to the problem of dismounting of old stake and new pile pouring construction.And what the application was directed to, it is waste and old pile pile
Dismounting, certainly, pile pile here should make the understanding of broad sense, that is, refer to stake boring and pile-type that periphery is concrete, it was both
Include the PHC pile piles of hollow pipe stake such as high intensity, and includes hollow square pile.
The prior art waste and old stake transformation work progress be：It will be waste and old on ground using the pile-drawing machine with pile pulling casing
Pile pile is extracted, and is then carried out reaming to remaining stake holes after pile pulling and is deepened, forms it into the deeper stake holes of bigger, then is carried out clear
Hole is put into steel reinforcement cage, pours into a mould concrete, is allowed to form new cast-in-situ bored pile.In this way, the small pile pile of old, bearing capacity is pulled out
Go out, pours and be poured in new, stake diameter bigger, deeper, the stronger cast-in-situ bored pile of bearing capacity.
The work progress of the prior art has the following defects：First, the length of the pile pulling casing of pile-drawing machine is limited, one
As be no more than 20 meters, therefore the pile pile within 20 meters of depth can only be extracted, more than 20 meters, then existing pile pulling device is helpless；
Moreover, for unit in charge of construction, it is also a no small cost to be specially equipped with a set of pile pulling device, if purchasing, utilization rate is low
Not cost-effective, if renting, rent is again very high, but also must be born by the expense of equipment transition, economically also very not cost-effective, and
And equipment transition is time-consuming and laborious and easy schedule delays not in time；Moreover above-mentioned old stake is pulled out and is drilled through bigger and deeper bores
The process in hole is that substep carries out, and construction efficiency is not high.
Invention content
The invention solves a technical problem be to provide a kind of waste and old pipe that can effectively abolish depth and be more than 20 meters
Stake and old stake are abolished synchronous can carry out with new stake holes pore-forming so that construction efficiency quickening, construction cost reduced abolishes waste and old pipe
The drill bit of stake.
The technical solution of the present invention is to provide a kind of drill bit for abolishing waste and old pile pile, it includes mandrel, mandrel
Excircle is equipped with helical blade, is equipped with the interconnecting piece for being docked with borer drill rod at the top of mandrel, helical blade at least middle part with
Multiple picks are had, mandrel bottom is equipped with the vertical reinforcement beam being welded by more bar dowels, tendon and mandrel coaxial line
And the outer diameter of tendon is less than or equal to the internal diameter for being intended to broken waste and old pile pile.
After using the above structure, the drill bit that the present invention abolishes waste and old pile pile has the following advantages：Old stake is crushed by the device
It is combined into one with two steps of new pile pore-forming so that two steps, which synchronize, to be carried out, and construction efficiency is accelerated；And the depth that old stake is broken
Degree is no longer influenced by the constraint of the pile pulling casing of pile-drawing machine, lower as needed can bore different depth, be more than 20 meters with grinding depth
Waste and old pile pile；It is combined with drill bit moreover, equipment is removed in above-mentioned old stake, so there is no need to be further provided with dedicated pile pulling
Equipment reduces cost of carry, lease expenses and the transition expense of pile pulling device, and on-demand, without as the prior art one
Sample waits for special pile pulling device transition, therefore avoids delay the duration；Moreover since helical blade is crushed old stake surrounding soil,
So that the aperture of new pile is much larger than old stake diameter, and the helical blade with pick even can be in sandstone, mud stone, apoplexy ashing rock etc.
It is directly crept into compared in incompetent bed, and waste and old pile pile sinks by bobbing machine vibrations, can not enter rock certainly, therefore increase effectively new pile
Depth and stake diameter, to obtain the bearing capacity of bigger, meet the needs of modernization high building that is, so that new pile is thicker deeper；Moreover it cuts
Tooth is other than breaking concrete, moreover it is possible to hook old stake reinforcing bar, and be cut with scissors broken belt and go out ground, realize concrete and reinforcing bar
Perfection is broken；Finally, the steel tendon being welded by more bar dowels can be targetedly inserted into softer in waste and old pile pile one step ahead
Central area, the breaking concrete and blade and pick follow up again, that is to say, that in blade and pick breaking concrete and reinforcing bar
When, steel tendon has been inserted into waste and old pile pile center one step ahead, and guided bearing is provided to it, it is ensured that vertical in entire pore forming process
Lower brill；Moreover and although the guide post of drill bit of the present invention is vulnerable part, tendon can augment welding at any time, such as outer ring mill
It is welded with a circle after damage, then a circle is welded with again after wearing, the process of adding reinforcement is convenient and efficient, and cost is also low, therefore easy to maintain,
It is sturdy durable, it is easy to spread.
Further, mandrel is equipped with the core pipe for being connected to hollow drill pipe along axis, and the under shed of core pipe is equipped with interior spiral shell
Line, core pipe under shed are combined with externally threaded stud, and stud lower end is welded with connector, whole bar dowels of vertical reinforcement beam
It is welded with connector upper end；The direction that stud screws is consistent with the direction bored under drill bit；In this way, first, when lower brill, due to stud
The direction screwed is identical as direction is bored under drill bit, therefore successfully avoids loosening for stud in going down process, connector and steel tendon；
Moreover, when needing borehole cleaning after pore-forming, it is only necessary to unscrew the stud of drill bit lower part, so that it may to remove connector and tendon, make
Drill bit is hollow, is recycled convenient for follow-up borehole cleaning mud.
Further, connector sidewall symmetry is set there are two blind hole, and being slidably matched in each blind hole, there are one jacking block, jacking blocks
Compression spring is connected between the bottom hole of blind hole；The drill bit is additionally provided with the auxiliary device for replacing connector, the auxiliary device packet
Two driving cylinders for being located at aperture are included, the piston rod of each driving cylinder fixes an anchor ear for holding connector tightly, each to embrace
The arc inner wall of hoop sets that there are one for blocking the fan ring notch of jacking block；Need to dismantle drill bit substructure when, it is only necessary to drive
Two anchor ears clamp connector, under normal condition, two jacking blocks of connector can be resisted by the arc inner wall of anchor ear and in retraction blind hole,
By bit certain angle so that the fan ring notch of jacking block face anchor ear, jacking block pop up under compression spring effect, stuck in fan ring
One end of notch thereby realizes the circumferential limit of connector and screw rod, continues rotary drilling-head, so that it may quickly and easily will
Connector and tendon screw off so that drill bit core pipe lower openings are convenient for follow-up borehole cleaning.
The invention solves another technical problem be to provide a kind of waste and old pipe that can effectively abolish depth and be more than 20 meters
Stake and old stake are abolished synchronous can carry out with new stake holes pore-forming so that construction efficiency quickening, construction cost reduced utilizes the present invention
The method that drill bit abolishes waste and old pile pile and new pile is perfused.
Another technical solution of the present invention is to provide a kind of utilization drill bit of the present invention and abolishes waste and old pile pile and be perfused
The method of new pile, step include：
A, the size of the waste and old pile pile internal diameter obtained according to prospecting, more bar dowels are welded on connector, are allowed to be formed
The outer diameter of tendon be less than or equal to and be intended to the internal diameter of broken waste and old pile pile；And connector and tendon spinning are entered into drill bit；
B, it drives under drilling rod and bores, the tendon touched at first with old staking is inserted into the centre bore of waste and old pile pile, is risen to be oriented to and be made
With, it is ensured that vertical lower brill；When drilling, the concrete of the pick energy broken worn-out pile pile on helical blade, and be attached to broken useless
The soil body around old pile pile, concrete disintegrating slag and periphery hack take ground out of by helical blade rotation；And pick is in drilling process
It is middle the reinforcing bar of waste and old pile pile winding hinge to be broken, so that reinforcing bar and the steel reinforcement cage of waste and old pile pile is detached from；It will be bored after lower brill certain depth
It is carried on bar, autogenous cutting is used in combination to cut away the reinforcing bar being wrapped on drill bit pick, under then continuing after the reinforcing bar on drill bit pick is clear clean
Bore certain depth, then on pull out cleaning, and so on, until by waste and old pile pile completely be crushed, then proceed to down get into setting for new pile
Count depth；At this point, old stake is broken and new pile pore-forming is completed；
C, borehole cleaning, sink to steel reinforcement cage and pour new pile concrete.
After above step, the method for the present invention has the following advantages：The synchronous waste and old pile pile of progress is crushed and new pile pore-forming,
Accelerate construction efficiency；Waste and old pile pile grinding depth is unrestricted, and grinding depth is more than 20 meters；Without special pile pulling device, save
Cost；New stake holes is thicker deeper, and bearing capacity is stronger；Reinforcing bar that is disconnected and taking waste and old pile pile out of can be cut with scissors, is realized thoroughly broken；When drilling
Tendon is first oriented to, and blade and pick follow up broken, the formation time difference, it is ensured that verticality again；Tendon is easily replaced, and gas is grounded.
As a further improvement, before borehole cleaning, it will be pulled out on drill bit to aperture, drive two driving cylinders, make two anchor ears by drill bit
Connector hold tightly, rotary drilling-head so that two jacking blocks of connector eject and stuck in corresponding fan ring notch, continuation rotary drilling
Head so that drill bit core pipe is unscrewed with the stud on connector, and the two is detached from；Anchor ear, driving cylinder and connector are removed again, will be laid down
The drill bit insertion bottom hole of connector, lower openings carries out mud using the hollow core pipe of drill bit and recycles with borehole cleaning；The above method,
The automatic dismantling of drill bit lower rebar beam is realized, it is convenient and efficient, both it is convenient for follow-up borehole cleaning, also allows for significantly breaking in tendon
The connector and tendon more renewed after damage.
Description of the drawings
Fig. 1 is the main structure diagram for the drill bit that the present invention abolishes waste and old pile pile.
Fig. 2 is that the core pipe for the drill bit that the present invention abolishes waste and old pile pile docks the section view enlarged structure schematic diagram at place with stud.
Fig. 3 is the schematic cross-sectional view of bowing after the connector for the drill bit that the present invention abolishes waste and old pile pile is held tightly by anchor ear.
As shown in the figure 1, mandrel, 2, helical blade, 3, interconnecting piece, 4, pick, 5, tendon, 6, core pipe, 7, stud, 8, even
Connector, 9, blind hole, 10, jacking block, 11, compression spring, 12, driving cylinder, 13, anchor ear, 14, arc inner wall, 15, fan ring notch.
Specific implementation mode
As shown, the present invention abolishes the drill bit of waste and old pile pile, it includes mandrel 1, and 1 excircle of mandrel is equipped with helical blade
2,1 top of mandrel is equipped with the interconnecting piece 3 for being docked with borer drill rod.At least middle part of helical blade 2 is to have multiple picks
4, it is of course also possible to be in helical blade 2 from top to bottom all equipped with pick 4.Moreover, even, can be substituted with cutter teeth
Pick 4, to obtain better rock breaking efficiency.
1 bottom of mandrel is equipped with the vertical reinforcement beam 5 being welded by more bar dowels, tendon 5 and 1 coaxial line of mandrel and steel
The outer diameter of muscle beam 5 is less than or equal to the internal diameter for being intended to broken waste and old pile pile.Above-mentioned whole bar dowels be close to each other be welded into it is whole
Body, to reinforce its intensity and bearing performance.
Specifically, mandrel 1 is equipped with the core pipe 6 for being connected to hollow drill pipe along axis, and the under shed of core pipe 6 is equipped with interior
Screw thread, 6 under shed of core pipe are combined with externally threaded stud 7, and 7 lower end of stud is welded with connector 8, vertical reinforcement beam 5 it is complete
It is welded with connector 8 portion bar dowel upper end；The direction that stud 7 screws is consistent with the direction bored under drill bit.As stud 7 screws
Direction is counterclockwise, and the direction bored under drill bit is also counterclockwise.Bar dowel is a relative concept, be for normal reinforcing bar come
It says, general length is blade pitgh between two blade pitghs, i.e. 12~36cm.
8 sidewall symmetry of connector is set there are two blind hole 9, is slidably matched in each blind hole 9 there are one jacking block 10, jacking block 10 with
Compression spring 11 is connected between the bottom hole of blind hole 9；11 both ends of compression spring are fixed with 9 bottom end of blind hole and 10 inner end of jacking block respectively.
The drill bit is additionally provided with the auxiliary device for replacing connector 8, and the collocation of connector 8 of the auxiliary device and drill bit makes
With.Specifically, which includes the driving cylinder 12 in two apertures for being located at drilling, and the piston rod of each driving cylinder 12 is solid
Fixed one anchor ear 13 for holding connector 8 tightly, the arc inner wall 14 of each anchor ear 13 set that there are one for blocking jacking block 10
Fan ring notch 15.Certainly, two above-mentioned driving cylinders 12 can be fixed on a trolley, and trolley is snug fit at
It on track, after dismantling convenient for connector 8, moves anchor ear 13 away, gets out of the way drilling orifice, carried out clearly so that drill bit sinks to bottom hole again
Hole.
As shown, the method abolished waste and old pile pile using the drill bit of the present invention and new pile is perfused, its step are as follows.
A, the size of the waste and old pile pile internal diameter obtained according to prospecting, more bar dowels are welded on connector 8, are allowed to be formed
The outer diameter of tendon 5 be less than or equal to and be intended to the internal diameter of broken waste and old pile pile；And connector 8 and 5 spinning of tendon are entered to bore
Head.
B, it drives under drilling rod and bores, the tendon 5 touched at first with old staking is inserted into the centre bore of waste and old pile pile, is risen to be oriented to and be made
With, it is ensured that vertical lower brill；When drilling, the concrete of the 4 energy broken worn-out pile pile of pick on helical blade 2, and be attached to broken
The soil body around waste and old pile pile, concrete disintegrating slag and periphery hack take ground out of by the rotation of helical blade 2；And pick 4 is being crept into
Can the reinforcing bar of waste and old pile pile be wound hinge in the process to break, reinforcing bar and the steel reinforcement cage of waste and old pile pile is made to be detached from；After lower brill certain depth
Drilling rod is above carried, autogenous cutting is used in combination to cut away the reinforcing bar being wrapped on drill bit pick 4, after the reinforcing bar on drill bit pick 4 is clear totally
Then continue that lower brill certain depth is lower as to bore 2 meters, then on pull out cleaning, and so on, until waste and old pile pile is crushed completely.So
The projected depth of new pile is got under continuing afterwards；At this point, old stake is broken and new pile pore-forming is completed.
Be still in the step, under normal condition using the drill bit with pick 4, encounter softer rock stratum for example sandstone, mud stone,
When apoplexy ashing rock, can directly it creep into.But when suffering from harder rock stratum such as granite, basalt, then replaceable band cutter teeth
Drill bit, to obtain stronger rock breaking capacity.
C, borehole cleaning, sink to steel reinforcement cage and pour new pile concrete.
And in the step, it before borehole cleaning, will be pulled out on drill bit to the aperture of drilling, drive two driving cylinders 12, make two anchor ears
13 hold the connector 8 of drill bit tightly, rotary drilling-head make connector 8 two jacking blocks 10 eject and it is stuck in corresponding fan ring notch
15, continue rotary drilling-head so that drill bit core pipe 6 is unscrewed with the stud 7 on connector 8, and the two is detached from；Anchor ear 13 is removed again, is driven
The drill bit for laying down connector 8, lower openings is inserted into bottom hole, is carried out using the hollow core pipe 6 of drill bit by dynamic cylinder 12 and connector 8
Mud is recycled with borehole cleaning.
Claims (5)
1. a kind of drill bit for abolishing waste and old pile pile, it includes mandrel (1), and mandrel (1) excircle is equipped with helical blade (2), mandrel
(1) top is equipped with the interconnecting piece (3) for being docked with borer drill rod, it is characterised in that：Helical blade (2) at least middle part is to divide into
There are multiple picks (4), mandrel (1) bottom to be equipped with the vertical reinforcement beam (5) being welded by more bar dowels, tendon (5) and core
The outer diameter of axis (1) coaxial line and tendon (5) is less than or equal to the internal diameter for being intended to broken waste and old pile pile.
2. the drill bit according to claim 1 for abolishing waste and old pile pile, it is characterised in that：Mandrel (1) is equipped with along axis and is used for
The under shed of the core pipe (6) being connected to hollow drill pipe, core pipe (6) is equipped with internal thread, and core pipe (6) under shed is combined with band external screw thread
Stud (7), stud (7) lower end is welded with connector (8), whole bar dowel upper ends and the connector (8) of vertical reinforcement beam (5)
Welding；The direction that stud (7) screws is consistent with the direction bored under drill bit.
3. the drill bit according to claim 2 for abolishing waste and old pile pile, it is characterised in that：Connector (8) sidewall symmetry is equipped with
Two blind holes (9), being slidably matched in each blind hole (9), there are one jacking blocks (10), connect between jacking block (10) and the bottom hole of blind hole (9)
It is connected to compression spring (11)；
The drill bit is additionally provided with the auxiliary device for replacing connector (8), which includes two drivings for being located at aperture
The piston rod of cylinder (12), each driving cylinder (12) fixes an anchor ear (13) for holding connector (8) tightly, each anchor ear (13)
Arc inner wall (14) set that there are one for blocking the fan ring notch (15) of jacking block (10).
4. the method abolished waste and old pile pile using the drill bit described in any one of claims 1 to 33 and new pile is perfused, feature
It is, step includes：
A, the size of the waste and old pile pile internal diameter obtained according to prospecting, welds more bar dowels on connector (8), is allowed to be formed
The outer diameter of tendon (5) is less than or equal to the internal diameter for being intended to broken waste and old pile pile；And by connector (8) and tendon (5) spinning
Enter drill bit；
B, it drives under drilling rod and bores, the tendon (5) touched at first with old staking is inserted into the centre bore of waste and old pile pile, is risen to be oriented to and be made
With, it is ensured that vertical lower brill；When drilling, the concrete of pick (4) the energy broken worn-out pile pile on helical blade (2), and be attached to
The soil body around broken worn-out pile pile, concrete disintegrating slag and periphery hack take ground out of by helical blade (2) rotation；And pick
(4) can be disconnected by the reinforcing bar winding hinge of waste and old pile pile in drilling process, so that reinforcing bar and the steel reinforcement cage of waste and old pile pile is detached from；It is lower to bore one
Drilling rod is above carried after depthkeeping degree, autogenous cutting is used in combination to cut away the reinforcing bar being wrapped on drill bit pick (4), the steel on drill bit pick (4)
Then continue lower brill certain depth after muscle is clear clean, then on pull out cleaning, and so on, until waste and old pile pile is crushed completely, then
The projected depth of new pile is got under continuing；At this point, old stake is broken and new pile pore-forming is completed；
C, borehole cleaning, sink to steel reinforcement cage and pour new pile concrete.
5. the method according to claim 4 abolished waste and old pile pile and new pile is perfused, it is characterised in that：Before borehole cleaning, it will bore
It is pulled out on head to aperture, drives two driving cylinders (12), two anchor ears (13) is made to hold the connector (8) of drill bit tightly, rotary drilling-head makes
Obtain two jacking blocks (10) ejection of connector (8) and stuck in corresponding fan ring notch (15), continuation rotary drilling-head so that drill bit core
It manages (6) to unscrew with the stud (7) on connector (8), the two is detached from；Anchor ear (13), driving cylinder (12) and connector are removed again
(8), the drill bit for laying down connector (8), lower openings is inserted into bottom hole, mud cycle is carried out using the hollow core pipe of drill bit (6)
With borehole cleaning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810862809.3A CN108798528B (en) | 2018-08-01 | 2018-08-01 | Drill bit for breaking waste pipe piles and method for breaking waste pipe piles and filling new piles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810862809.3A CN108798528B (en) | 2018-08-01 | 2018-08-01 | Drill bit for breaking waste pipe piles and method for breaking waste pipe piles and filling new piles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108798528A true CN108798528A (en) | 2018-11-13 |
| CN108798528B CN108798528B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810862809.3A Active CN108798528B (en) | 2018-08-01 | 2018-08-01 | Drill bit for breaking waste pipe piles and method for breaking waste pipe piles and filling new piles |
Country Status (1)
| Country | Link |
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| CN (1) | CN108798528B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706260A (en) * | 2020-07-04 | 2020-09-25 | 邹城兖矿泰德工贸有限公司 | Special drill bit for preventing rock burst |
| CN115213647A (en) * | 2022-08-30 | 2022-10-21 | 山东兖矿智能制造有限公司 | Cutting tooth forming method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111706260A (en) * | 2020-07-04 | 2020-09-25 | 邹城兖矿泰德工贸有限公司 | Special drill bit for preventing rock burst |
| CN115213647A (en) * | 2022-08-30 | 2022-10-21 | 山东兖矿智能制造有限公司 | Cutting tooth forming method |
| CN115213647B (en) * | 2022-08-30 | 2024-02-09 | 山东兖矿智能制造有限公司 | Cutting pick molding method |
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