CN109235426A - A kind of construction process for bored pile - Google Patents
A kind of construction process for bored pile Download PDFInfo
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- CN109235426A CN109235426A CN201811155477.1A CN201811155477A CN109235426A CN 109235426 A CN109235426 A CN 109235426A CN 201811155477 A CN201811155477 A CN 201811155477A CN 109235426 A CN109235426 A CN 109235426A
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- cofferdam
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- bored pile
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- 238000010276 construction Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000005553 drilling Methods 0.000 claims abstract description 18
- 238000005516 engineering process Methods 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 230000002787 reinforcement Effects 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 239000004927 clay Substances 0.000 claims abstract description 10
- 239000011449 brick Substances 0.000 claims abstract description 6
- 239000002893 slag Substances 0.000 claims abstract description 6
- 238000012546 transfer Methods 0.000 claims abstract description 6
- 239000002002 slurry Substances 0.000 claims abstract description 5
- 239000004575 stone Substances 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 9
- 239000011435 rock Substances 0.000 claims description 7
- 238000007689 inspection Methods 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 4
- 230000002262 irrigation Effects 0.000 claims description 3
- 238000003973 irrigation Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 231100000241 scar Toxicity 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000005266 casting Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012913 prioritisation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
Abstract
The invention discloses a kind of construction process for bored pile, the construction technology includes the following steps: that (1) cofferdam is set up: carrying out cofferdam using several fore shaft steel-pipe piles and sets up；(2) basement process: cofferdam lower part backfills clay, and top backfills brick slag, carries out Reinforcement with Cement-mixed Piles in the side wall weir of river；(3) casing sinking: the vibration of outer casing is sink to by former mud face using vibration hammer, is then drilled using churning driven to stablizing clay layer and transfers interior casing again；(4) Completion of Drilling Hole: interior casing decentralization finishes, and is normally crept into using impact drill, and data is surveyed in base area, uses small stroke instead when creeping into 2m above to Upper Plate of Karst Cave and continues to creep into, and mends slurry backfill in time if solution cavity spillage；(5) lower section steel reinforcement cage and concreting pile；It after above-mentioned pore-forming, carries out a borehole cleaning and transfers steel reinforcement cage, secondary pile hole cleaning is simultaneously poured concrete, until pile.Construction technology of the present invention is simple, construction cost is low, high-efficient.
Description
Technical field
The present invention relates to filling pile construction technical fields, and in particular to a kind of construction process for bored pile.
Background technique
Karst refers to that solution cavity is widely distributed in China because karsitification is formed by the underground space in solublerock,
The especially ground such as Yunnan, Guangxi, Guizhou, Hunan.Bridge, which is built, in these areas inevitably encounters karsts developing area condition
The problem how lower bridge pile foundation effectively constructs.
Wang Haihuai emphasizes that geological mapping early period grasps the importance of solution cavity parameter by taking the bridge of Zhaoqing as an example, and it is more to take brill to bury
Layer casing becomes the heavy technique of grade vibration and guarantees pile quality [1]；Bedrock fracture development and solution cavity shape when Xia Lin et al. is directed to pile foundation construction
The problem of formula multiplicity proposes impervious grouting, the first-class solution of reamer [2]；Fang little Rui et al. is to slight solution cavity, general molten
Hole, complicated solution cavity propose the technical essential of bored pile respectively, and especially its design emphasis of complicated solution cavity is full casing with proceeding to
Rock stratum prevents dew slurry from leading to coating collapse hole [3]；Dai Zusheng et al. uses stake week coating whirl spraying curtain for special solution cavity location
Curtain Dispose by grouting technique prevents coating collapse hole accident [4]；Li Wu army et al. divides solution cavity according to solution cavity feature and filling situation
For four classes, and for different types of solution cavity proposes clay backfill, fills the solutions [5] such as sand mud jacking, casing follow-up；Wang little Dong
Et al. analyze the construction Difficulties of Karst Geological Landscape bored pile, solution is to control mud balance and backfill square piece stone is
Main [6]；The main reason for Zhang Ye et al. is for sea area Karst Geological Landscape analysis spillage collapse hole, and take hole-specifically Advance Drilling, control
Mud index keeps the measures [7] such as head height difference, the long casing of setting；It triumphant et al. is mentioned by taking Zhuankou Changjiang River Highway Bridge as an example by auspicious
The installation method of guide table is gone out, and the processing method [8] that burying occurs for solution cavity condition impact holing is discussed in detail.
Above-mentioned document benefits our pursuits to Karst Geological Landscape bored pile technology, but for bridge foundation operation near water
How erection construction platform be related to it is less, and under solution cavity developmental condition construction drill bored concrete pile not only to guarantee safety also need
Want more efficient, more economical prioritization scheme.
Summary of the invention
The drilling that the technical problem to be solved in the present invention is to provide a kind of construction technologies is simple, construction cost is low, high-efficient
Construction process of bored concrete pile.
In order to achieve the above objectives, technical scheme is as follows:
A kind of construction process for bored pile, the construction technology include the following steps:
(1) cofferdam is set up: being carried out cofferdam using several fore shaft steel-pipe piles and is set up；
(2) basement process: cofferdam lower part backfills clay, and top backfills brick slag, carries out Reinforcement with Cement-mixed Piles in the side wall weir of river；
(3) casing sinking: the vibration of outer casing is sink to by former mud face using vibration hammer, is then drilled using churning driven to stablizing clay layer
Interior casing is transferred again；
(4) Completion of Drilling Hole: interior casing decentralization finishes, and is normally crept into using impact drill, is changed when creeping into 2m above to Upper Plate of Karst Cave
Continue to creep into small stroke, mends slurry backfill in time if solution cavity spillage；
(5) lower section steel reinforcement cage and concreting pile；After above-mentioned pore-forming, carries out a borehole cleaning and transfer steel reinforcement cage, it is secondary clear
Hole is simultaneously poured concrete, until pile.
In one embodiment of the invention, the diameter in the cofferdam in step (1) is 40m, and support dress is equipped with inside cofferdam
It sets.In one embodiment of the invention, diameter 500mm cement mixing pile, stake bottom need to be locally applied in cofferdam in step (2)
Deeply original mud face is no less than 0.5m.
In one embodiment of the invention, outer casing is sunk down by former mud face 1m using vibration hammer in step (3), used
Churning driven drill in advance to stablize farinose argillic horizon 2m transfer in casing, outer casing diameter 3.4m, interior casing diameter 3.2m.
In one embodiment of the invention, in step (4), if the wirerope appearance left and right of impact drill is shaken in boring procedure
Pendulum, shows to encounter inclined-plane rock or vertical demifacet rock, should backfill loess, slabstone in time, and is beaten repeatedly with drill bit close, squeezes stone on one side and makes
Wall eliminates scar on one side, until all creeping into horizon d.
In one embodiment of the invention, throwing loess, slabstone fill solution cavity gap, and rapid supplementary irrigation when solution cavity backfills
Mud continues the compacted drilling of short stroke after mud liquid level stabilizing and no longer after decline.
In one embodiment of the invention, loess, slabstone are backfilled according to 1:1 to 3:1 ratio, elder generation's washer stone when throwing,
Loess, last washer stone again are filled out again.
In one embodiment of the invention, solution cavity occur spillage when also need to use divide into interior casing supporting pile peripheral earth with
It keeps stablizing, interior casing is transferred to farinose argillic horizon 2m.
In one embodiment of the invention, also need to carry out inspection hole before a borehole cleaning in step (5), using visit cage into
Row carries out inspection hole, will visit cage and is put into hole to be subject to and visit cage and can pass through up and down, if hole deviation seriously answers throwing loess, slabstone weight
New drilling.
In one embodiment of the invention, borehole cleaning, a secondary pile hole cleaning are all made of mud separator, need to ensure sand factor
≤ 2%, mud balance 1.15.
Through the above technical solutions, the beneficial effects of the present invention are:
Using substep drilling substitution impact drill synchronous construction when basement process, impact drill synchronous construction can be reduced to cofferdam structure
It impacts and dramatically speeds up construction speed, shorten the construction period；Single layer steel pile casting is used to transfer in solution cavity spillage viscous to silty is stablized
Soil layer 2m, and loess, slabstone are backfilled, silty sand ground spillage collapse hole is further prevented, and improve the place of silty sand ground spillage collapse hole
Manage efficiency；Using single layer steel pile casting rather than multilayer steel pile casting, this scheme substantially reduce working measure under the premise that security is guaranteed
Take.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is cofferdam scheme of installation of the present invention；
Fig. 2 is Reinforcement with Cement-mixed Piles floor plan in cofferdam of the present invention；
Number and corresponding component title represented by letter in figure:
10, cofferdam 11, fore shaft steel-pipe pile 20, support component 21, support stake 22, horizontal support bar 23, strut
24, railing 25, brace.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to tool
Body diagram, the present invention is further explained.
Referring to figure 1 and figure 2, the invention discloses a kind of construction process for bored pile, construction technology includes as follows
Step: (1) cofferdam is set up；(2) basement process；(3) casing sinking；(4) Completion of Drilling Hole and (5) lower section steel reinforcement cage and concrete
Pour pile.
(1) cofferdam is set up: cofferdam is carried out using fore shaft steel-pipe pile and is set up, the top mark for setting cofferdam according to actual needs is high,
Bottom absolute altitude, diameter；The diameter in cofferdam is 40m, cofferdam top mark height+36.0m, bottom absolute altitude+10.0m, the diameter in cofferdam in the present invention
It need to guarantee that adjacent pile foundation construction clear distance is 5m or more, so that not interfering between each pile foundation when construction, improve construction efficiency；Again
Person is equipped with support device to improve the stability in cofferdam inside cofferdam 10, and support device is made of 4 support components 20,
It is vertical setting between every adjacent supports component；Several support stakes 21 of support component, the setting horizontal support bar in support stake
22, several struts 23, several railings 24 and several braces 25 form, and the lower end of several support stakes 21 is arranged on ground,
And be arranged in straight line, the setting of horizontal support bar 22 is in support stake, the both ends fore shaft steel-pipe pile 11 with cofferdam 10 respectively
Connection, railing 24 are arranged on the inner wall of cofferdam and are arranged along cofferdam circumferencial direction, and one end of strut 23 is arranged on railing 24, separately
One end is arranged on horizontal support bar 22；One end of brace 25 is arranged on railing 24, and the other end is arranged in horizontal support bar 22
On, brace 25 is between two adjacent struts 23；4 horizontal support bars 21 are joined together to form square structure；It is horizontal
Support rod 21, strut 23 form triangular support configurations between brace 25, and strut 23, brace 25 form triangle branch between railing 24
Support structure；Above-mentioned triangular support configurations improve the stability of support device, have further securely fixed cofferdam, improve cofferdam
Stability.Cofferdam is divided into land area and region waterborne, according to live land and water position by steel-pipe pile be divided into marine piling area and
The land piling area region Liang Ge；It is waterborne unidirectionally to be set using 100t crane ship cooperation APE200-6 vibration hammer along circular arc, it is land to adopt
It being set with 120t crawler crane cooperation APE200-6 vibration hammer along circular arc opposite direction, last ten pile is rectified a deviation in time according to pile position deviation,
Guarantee that steel-pipe pile is smoothly closed.Simultaneously to guarantee closure quality, two rows of diameter 800mm high-pressure rotary-sprays are applied closing up a position
Stake, pile center spacing 600mm, stake top absolute altitude+33.0m, stake bottom absolute altitude+10.0m amount to 19.Then it installs first in cofferdam
Road Two bors d's oeuveres H400 purlin and backfill of drawing water.Cofferdam lower inside backfills clay, backfills brick slag or sand gravel within the scope of the 2m of top；It encloses
Brick slag or sand gravel are filled on the outside of weir to+27.0m, not filling clay prevents immersion from sinking.So far, operation platform fore shaft steel is completed
It sets up in tubular pole cofferdam.
(2) basement process: cofferdam lower part backfills clay, and top backfills brick slag, carries out cement mixing pile in the side wall weir of river and add
Gu；Diameter 500mm cement mixing pile is locally applied in cofferdam, stake bottom is deeply no less than 0.5m in former mud face.
(3) casing sinking: first transferring several outer casings, outer casing diameter 3.4m, using exempting from the DZP150 vibration hammer that resonates
Former mud face 1m is sunk down into, to reduce the heavy influence to cofferdam structure of casing vibration, former mud face is original ground；Then in outer casing
Interior casing is transferred in side, and interior casing diameter 3.2m is drilled in advance using XR60D churning driven to farinose argillic horizon 2m is stablized, and mud protects
Wall (mud pit selection closes on outer casing), then it is aided with casing decentralization in 80t crawler crane or the completion of 100t crane ship.
(4) Completion of Drilling Hole: interior casing decentralization finishes, and is normally crept into using impact drill, when drilling to the above 2m of Upper Plate of Karst Cave
The small stroke of Shi Gaiyong continues to creep into, and mends slurry backfill in time if solution cavity spillage, since bedrock surface rises and falls greatly in cofferdam, boring procedure
In when impact drill wirerope appearance be significantly swung left and right, show to encounter inclined-plane rock or vertical demifacet rock, Huang should be backfilled in time
Soil, slabstone (based on slabstone, diameter 15-30cm), and beaten repeatedly with drill bit close, stone wall building is squeezed on one side, eliminates scar on one side, directly
To all drilling horizon ds；When impact drill normally creeps into 2m above to Upper Plate of Karst Cave, impact drill should be hammered into shape gently at this time beats strictly slowly
Stroke and drilling depth are controlled, requires stroke in 50cm or so, generally to achieve the effect that hole wall is round and smooth firm；When the small stroke of impact drill
When serious spillage occurs for drilling to solution cavity, throwing loess, slabstone, loess, slabstone it should backfill, throw according to 3:1 or 2:1 ratio at once
Elder generation's washer stone when filling out fills out loess, last washer stone again, and supplementary irrigation premium mud (1.3-1.5) rapidly again；To mud liquid level stabilizing
And after no longer declining, continue the compacted drilling of short stroke, until creeping into designed elevation；If solution cavity is developed in bead string type, need
Aforesaid operations are repeated until designed elevation.
The conventional process mode of bead string type solution cavity is the follow-up of multilayer casing, i.e., multilayer different-diameter is transferred in drilling process
Steel pile casting, prevent solution cavity spillage cause collapse hole accident.And this engineering is transferred using interior casing to stablizing farinose argillic horizon 2m,
Main prevention silty sand ground spillage collapse hole；Consider that solution cavity buried depth and pile foundation aperture are larger, mud is sufficient in hole and solution cavity hole wall is compacted
Well, as long as so a possibility that collapse hole occurs for Bu Jiang lower layer soil property in time very little.Therefore, in construction using single layer steel pile casting and
Non-multilayer casing, this scheme substantially reduce working measure expense under the premise that security is guaranteed.
(5) lower section steel reinforcement cage and concreting pile；After above-mentioned pore-forming, it is greater than steel reinforcement cage diameter 5cm, length with outer diameter
Inspection hole is carried out for the spy cage (inspection hole device) in 5 times of aperture, is subject to and visits cage and can pass through drilling up and down, if hole deviation seriously answers throwing
Loess, slabstone are crept into again；Borehole cleaning uses mud separator, it is ensured that sand factor≤2%, mud balance 1.15(prevent solution cavity from newly making
Wall collapse hole)；Sediment thickness is checked with plummet method, steel reinforcement cage is installed after meeting the requirements, and carries out second of borehole cleaning；The underwater coagulation of pile foundation
Soil, which pours, should meet first filling amount requirement, use 3m in the present invention3Hopper continuously uninterruptedly pours, and depth of tremie is controlled in 2-6m,
End batch concreting face should be higher than that stake top absolute altitude 1m；So far, the bored pile construction of Karst Geological Landscape is completed.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Bibliography
[1] Wang Hai cherishes construction technology [J] marine traffic engineering of Pile In Drill In Karst Terrain, 2000 (3): 34-37.
[2] design and construction scheme of Xia Lin, Li Zhi honor Pile In Drill In Karst Terrain studies [J] Wuhan University of Technology
Journal, 2000,22 (1): 41-43.
[3] construction [J] highway of Fang little Rui, Shen Diandong, Xu Chang Techniques of Bored Cast-in-Place Piles of Bridges in Karst Area, 2003 (12):
23-25.
[4] karst area Dai Zusheng, Chen Qing China thick-covering cast-in-situ bored pile Treatment technology of karst cave [J] construction technology,
2013, 42(5):75-77.
[5] Li Junwu, Wei Zhi roc karst Construction technology of bored pile inquire into [J] highway, 2013 (7): 165-168.
[6] Wang little Dong, Liu Xianwei, Jiang Longhua wait karst, soil cave to develop regional large airport pile foundation construction technology
[J] construction technology, 2014 (19): 54-56.
[7] Zhang Ye, Lu Feng neritic zone Karst Geological Landscape impact holing construction technology [J] highway, 2015 (10): 121-
124.
[8] by auspicious triumphant, Li Fangwu, Zhang Yanhe wait the karst region Engineering Technology of Large Diameter Boring Cast-in-place Piles [J] construction skill
Art, 2017 (20).
Claims (10)
1. a kind of construction process for bored pile, which is characterized in that the construction technology includes the following steps:
(1) cofferdam is set up: being carried out cofferdam using several fore shaft steel-pipe piles and is set up；
(2) basement process: cofferdam lower part backfills clay, and top backfills brick slag, carries out Reinforcement with Cement-mixed Piles in the side wall weir of river；
(3) casing sinking: the vibration of outer casing is sink to by former mud face using vibration hammer, is then drilled using churning driven to stablizing clay layer
Interior casing is transferred again；
(4) Completion of Drilling Hole: interior casing decentralization finishes, and is normally crept into using impact drill, is changed when creeping into 2m above to Upper Plate of Karst Cave
Continue to creep into small stroke, mends slurry backfill in time if solution cavity spillage；
(5) lower section steel reinforcement cage and concreting pile；After above-mentioned pore-forming, carries out a borehole cleaning and transfer steel reinforcement cage, it is secondary clear
Hole is simultaneously poured concrete, until pile.
2. a kind of construction process for bored pile according to claim 1, which is characterized in that cofferdam in step (1)
Diameter is 40m, is equipped with support device inside cofferdam.
3. a kind of construction process for bored pile according to claim 1, which is characterized in that need to be in cofferdam in step (2)
Interior part applies diameter 500mm cement mixing pile, and stake bottom is deeply no less than 0.5m in former mud face.
4. a kind of construction process for bored pile according to claim 1, which is characterized in that using vibration in step (3)
Outer casing is sunk down into former mud face 1m original ground by hammer, is drilled in advance using churning driven to stablizing farinose argillic horizon 2m in decentralization
Casing, outer casing diameter 3.4m, interior casing diameter 3.2m.
5. a kind of construction process for bored pile according to claim 1, which is characterized in that in step (4), boring procedure
If the wirerope of impact drill is swung left and right in, shows to encounter inclined-plane rock or vertical demifacet rock, should backfill loess, piece in time
Stone, and beaten repeatedly with drill bit close, stone wall building is squeezed on one side, eliminates scar on one side, until all creeping into horizon ds.
6. a kind of construction process for bored pile according to claim 1, which is characterized in that throwing is yellow when solution cavity backfills
Soil, slabstone fill solution cavity gap, and it is compacted to continue short stroke after mud liquid level stabilizing and no longer after decline for supplementary irrigation mud rapidly
Drilling.
7. a kind of construction process for bored pile according to claim 6, which is characterized in that loess, slabstone according to 1:1 extremely
The backfill of 3:1 ratio, elder generation's washer stone when throwing fill out loess, last washer stone again again.
8. a kind of construction process for bored pile according to claim 6, which is characterized in that solution cavity occurs also to need when spillage
It uses and divides into interior casing supporting pile peripheral earth to keep stable, interior casing is transferred to farinose argillic horizon 2m.
9. a kind of construction process for bored pile according to claim 1, which is characterized in that primary clear in step (5)
Also need to carry out inspection hole before hole, carry out inspection hole using cage is visited, will visit cage be put into hole with visit cage can pass through up and down for
Standard, if hole deviation seriously answers throwing loess, slabstone to creep into again.
10. a kind of construction process for bored pile according to claim 1, which is characterized in that borehole cleaning, a secondary pile hole cleaning
It is all made of mud separator, need to ensure sand factor≤2%, mud balance 1.15.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109914397A (en) * | 2019-03-19 | 2019-06-21 | 重庆建筑工程职业学院 | Bridge Pile Foundation Construction method |
| CN111608174A (en) * | 2020-06-11 | 2020-09-01 | 湖北鄂东桩基工程有限公司 | Karst area karst cave treatment method based on punched cast-in-place pile |
| CN113090192A (en) * | 2021-04-26 | 2021-07-09 | 中铁一局集团有限公司 | Complex stratum rotary drilling steel sleeve matched hole forming method |
| CN113585242A (en) * | 2021-08-03 | 2021-11-02 | 珠海市建安集团有限公司 | Construction method for long spiral drilling of overlong sleeve through pebble bed |
| CN116255095A (en) * | 2023-02-09 | 2023-06-13 | 泰安中联水泥有限公司 | Equipment for accurately positioning surface mine drilling and use method |
| CN117052293A (en) * | 2023-08-21 | 2023-11-14 | 江苏建院营造股份有限公司 | Improved construction equipment and construction method for square bored pile |
| CN117145389A (en) * | 2023-10-31 | 2023-12-01 | 山东港口烟台港集团有限公司 | Foundation impact type drilling device for ocean engineering construction |
| CN117145389B (en) * | 2023-10-31 | 2024-04-12 | 山东港口烟台港集团有限公司 | Foundation impact type drilling device for ocean engineering construction |
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| CN109914397A (en) * | 2019-03-19 | 2019-06-21 | 重庆建筑工程职业学院 | Bridge Pile Foundation Construction method |
| CN111608174A (en) * | 2020-06-11 | 2020-09-01 | 湖北鄂东桩基工程有限公司 | Karst area karst cave treatment method based on punched cast-in-place pile |
| CN113090192A (en) * | 2021-04-26 | 2021-07-09 | 中铁一局集团有限公司 | Complex stratum rotary drilling steel sleeve matched hole forming method |
| CN113585242A (en) * | 2021-08-03 | 2021-11-02 | 珠海市建安集团有限公司 | Construction method for long spiral drilling of overlong sleeve through pebble bed |
| CN116255095A (en) * | 2023-02-09 | 2023-06-13 | 泰安中联水泥有限公司 | Equipment for accurately positioning surface mine drilling and use method |
| CN116255095B (en) * | 2023-02-09 | 2023-11-17 | 泰安中联水泥有限公司 | Equipment for accurately positioning surface mine drilling and use method |
| CN117052293A (en) * | 2023-08-21 | 2023-11-14 | 江苏建院营造股份有限公司 | Improved construction equipment and construction method for square bored pile |
| CN117052293B (en) * | 2023-08-21 | 2024-04-12 | 江苏建院营造股份有限公司 | Improved construction equipment and construction method for square bored pile |
| CN117145389A (en) * | 2023-10-31 | 2023-12-01 | 山东港口烟台港集团有限公司 | Foundation impact type drilling device for ocean engineering construction |
| CN117145389B (en) * | 2023-10-31 | 2024-04-12 | 山东港口烟台港集团有限公司 | Foundation impact type drilling device for ocean engineering construction |
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