CN106812473A - Churning drilling tool with helical blade and pressure injection displacement stiffening pile anchor construction method - Google Patents

Churning drilling tool with helical blade and pressure injection displacement stiffening pile anchor construction method Download PDF

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Publication number
CN106812473A
CN106812473A CN201710072767.9A CN201710072767A CN106812473A CN 106812473 A CN106812473 A CN 106812473A CN 201710072767 A CN201710072767 A CN 201710072767A CN 106812473 A CN106812473 A CN 106812473A
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China
Prior art keywords
helical blade
drilling
drilling rod
churning
drilling tool
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CN201710072767.9A
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Chinese (zh)
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CN106812473B (en
Inventor
张衡
范君宇
张扬
王冰冰
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Shanghai Qiangjin Foundation Engineering Co Ltd
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Shanghai Qiangjin Foundation Engineering Co Ltd
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Priority to CN201710072767.9A priority Critical patent/CN106812473B/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/44Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00Handling building or like materials for hydraulic engineering or foundations
    • E02D15/02Handling of bulk concrete specially for foundation or hydraulic engineering purposes
    • E02D15/04Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/46Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/60Drill bits characterised by conduits or nozzles for drilling fluids
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00Production methods
    • E02D2250/003Injection of material

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Physics & Mathematics (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Piles And Underground Anchors (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Abstract

The present invention provides a kind of churning drilling tool with helical blade, and the drilling tool is made up of hollow polish drill rod, the drilling rod of hollow belt helical blade, drill bit, churning mouth and reducing drill bit;Hollow screw drilling rod front end carries drill bit, and chisel edge carries nozzle.Hole is drawn using the drilling tool with helical blade, the soil body in hole is outwards conveyed through helical blade;After creeping into projected depth, rotation in the same direction when keeping drilling rod and drawing hole above carries drilling rod, and helical blade displacement is portalled the interior soil body, while rotary jet grouting forms anchoring body.Using the reducing drill bit for drawing dowel, dowel is brought into having pressed the drilling for filling slurries, is sent to design attitude and forms piled anchor of putting more energy into.The anchoring body formed using the construction method, has the features such as intensity is high, deformation is small.

Description

Churning drilling tool with helical blade and pressure injection displacement stiffening pile anchor construction method
Technical field
The present invention relates to ground foundation engineering technical field, be specifically related to a kind of foundation ditch and slope retaining structure with The anti-float anchor rod of underground structure.
Background technology
Conventional foundation pit stope support structure or underground structure anti-floating anchor, general to draw hole slip casting shape using three-wing bit at present Into anchoring body.After in sludge soft, silt or pore-forming in the grittiness soil body, if do not used hole wall safeguard measure, collapsed after drawing hole Hole, will be unable to be put into anchoring piece after collapse hole, and the anchoring body diameter that slip casting is formed cannot also ensure.Therefore, being bored using tiretube process more Hole, i.e., in the additional steel pipe dado sleeve pipe of drill bit, again take out sleeve pipe after anchoring piece and slip casting is put into, so as to generate compared with Construction cost high, increased difficulty of construction.Because the slip casting anchoring body diameter that tiretube process retaining wall can be resulted in is smaller, pull out Disturbance after sleeve pipe to stratum is larger, and have impact on the quality of slip casting anchoring body, and then reduces the anchor of foundation ditch and slope retaining Gu power, causes Support Deformation increase or excavation slope to cave in.As anti-floating anchor, can also make the reduction of its resistance to plucking anchor force, cause ground Lower structure floating or unstability.
Jet mixing construction technology is used in sludge soft, a churning soil cement anchoring for major diameter can be formed Body, but mud cannot be compared with the Behavior of Hardened Cement Paste that cement paste is formed with the soil-cement body intensity formed after cement mortar stirring mixing; In silt and the grittiness soil body, the uniformity that the cement soil pile that rotary jet grouting is formed there is also pile body is poor, formation of pile Disturbance to closing on the soil body is larger, not only have impact on the environment on periphery, and cement grout can be made to spread excessive, the cement of formation Native pile body diameter change is larger, reduces anchor force, causes supporting construction or the degree of safety of anti-floating anchor to substantially reduce, bring compared with Many potential safety hazards.
Therefore, being directed to soft soil layer, one intensity of formation is higher, and uniformity is preferable, and efficiency of construction anchoring body higher, To meet the safety requirements of foundation pit stope support and structure resistance to plucking (floating), invention is a kind of reliably to be anchored drilling tool and forms high-strength anchor The technology of solid seems very urgent.
The content of the invention
The technical problems to be solved by the invention are to overcome problems of the prior art, there is provided a kind of spiral spray Penetrate drilling tool and displacement mud jacking forms the construction method of piled anchor of putting more energy into.
In order to solve the above problems this, the technical scheme of invention is such:
A kind of churning drilling tool with helical blade, it is characterized in that:Drilling tool is by hollow polish drill rod, hollow light drilling rod front end Drilling rod and reducing the drill bit composition of blanking bar helical blade;Hollow screw drilling rod front end carries drill bit, and chisel edge is with spray Mouth;Churning drilling tool with helical blade can draw hole and fetch earth;Reducing churning chisel edge passes through anchor disk, and anchor disk is withstood in rear end, draws Dowel is in place.
Further, the run of steel with helical blade is 1-8m.
The method for replacing piled anchor of putting more energy into using the churning drilling tool construction pressure injection with helical blade, its step is as follows,
1) hole, is drawn using the drilling tool with helical blade, the soil body in hole is outwards conveyed through helical blade;
2), drilling to after projected depth, keep drilling rod and draw hole when rotation in the same direction, above carry drilling rod, helical blade displacement Portal the interior soil body, while rotary jet grouting;
3) cement mortar or soil body curing agent slurries Fast Filling for, being sprayed by bit nozzle displace empty in the hole of the soil body Between;
4), in the range of anchoring section, drilling rod can be moved back and forth, and the press-in that readvances of the drilling rod of rollback has been filled with the brill of slurries Kong Zhong, while churning injection slurries, make the aperture of anchoring section become big, the diameter of the anchoring body of formation also accordingly increases;
5) after pressing grouting liquid in, drilling, drilling tool is exited into drilling, replaces with reducing drill bit, the drill bit of minor diameter is inserted Enter in anchor disk mesopore, the perpendicular anchor disk in drilling rod top of major diameter, traction dowel to design attitude.
Further, the drilling rod with helical blade takes out the soil body in hole in back off procedure, while grouting methol liquid Or soil body curing agent slurries;The slurries for replacing pressure injection form the anchoring body of piled anchor of putting more energy into.
Further, traction dowel process and also sprayable slurries during drilling rod are extracted out.
Beneficial effect:A kind of churning drilling tool with helical blade of the present invention and the piled anchor construction of putting more energy into of pressure injection displacement Method, the soil that the drilling rod with helical blade will be taken out of in drilling, while pressure pours into cement mortar or soil body curing agent slurries, is replaced Efficiency high, the anchoring body effect of formation is good;The anchoring body that the method is made has intensity higher.
Brief description of the drawings
Describe the present invention in detail with reference to the accompanying drawings and detailed description;
Fig. 1, a kind of churning drilling tool schematic diagram with helical blade
Fig. 2, pressure injection replace the anchoring section forming process schematic diagram of piled anchor of putting more energy into
Fig. 3, pressure injection replace the anchoring section schematic diagram of piled anchor of putting more energy into
Fig. 4, single anchor disk dowel are drawn to the schematic diagram in anchoring body
Fig. 5, pressure dissipation formula dowel are drawn to the schematic diagram in anchoring body
In figure:1-the drilling rod with helical blade, 2-polish drill rod, 3-drill bit, 4-whitewashing mouth, 5-spray slurries, 6- Anchoring stratum, 7-anchor disk, 8-bring the drilling tool of dowel, 9-dowel, 10-reducing drill bit into.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, tie below Conjunction is specifically illustrating, and the present invention is expanded on further.
Referring to Fig. 1~Fig. 5, a kind of churning drilling tool with helical blade, the drilling tool have the drilling rod 1 with helical blade, in 2, drill bit 3 of empty polish drill rod, whitewashing mouth 4 and reducing drill bit 10 are constituted;
The stiffening pile anchor construction method of pressure injection displacement, its step is as follows:
1) hole, is drawn using the drilling rod 1 and drill bit 3 of hollow belt helical blade, the soil body 6 in hole is outwards defeated through helical blade Send, referring to Fig. 2;
2), creep into after projected depth, keep rotating Vortex of the drilling rod in drilling, above carry drilling rod, helical blade 1 is taken out of The soil body 6 in hole, while rotary jet grouting, referring to Fig. 2;
3), occupy empty in the hole for displace the soil body by the cement paste 5 or soil body curing agent slurries 5 of bit nozzle churning Between, referring to Fig. 3;
4), in the range of anchoring section, drilling rod can be moved back and forth, and the press-in that readvances of the drilling rod of rollback has been filled with the brill of slurries Kong Zhong, while churning injection slurries, make the aperture of anchoring section become big, the diameter of the anchoring body of formation also increases simultaneously, referring to figure 3;
5) after pressing grouting liquid in, drilling, drilling tool is exited into drilling, changes the reducing drill bit 10 of traction dowel 9, it is small straight The drill bit 10 in footpath is inserted into the hole of anchor disk 7, and the drilling rod of major diameter holds out against anchor disk and is brought into have pressed by dowel 9 fills slurries In 5 drilling, design attitude is reached.Referring to Fig. 4, put more energy into piled anchor for pressure dissipation formula, be drawn to by the method for Fig. 5 Position.
Step 1) in, in drilling process, the nozzle of chisel edge is while jet cement slurries or soil body curing agent slurries.
Step 5) in, draw during bringing dowel 9 into, also sprayable slurries.
General principle of the invention, principal character and advantages of the present invention has been shown and described above.The technology of the industry Personnel it should be appreciated that the present invention is not limited to the above embodiments, simply explanation described in above-described embodiment and specification this The principle of invention, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appending claims and its Equivalent is defined.

Claims (5)

1. a kind of churning drilling tool with helical blade, it is characterized in that:Drilling tool by hollow polish drill rod, hollow light drilling rod front end it is hollow Drilling rod with helical blade and reducing drill bit are constituted;Hollow screw drilling rod front end carries drill bit, and chisel edge carries nozzle; Churning drilling tool with helical blade can draw hole and fetch earth;Reducing churning chisel edge passes through anchor disk, and anchor disk is withstood in rear end, draws dowel In place.
2. a kind of churning drilling tool with helical blade according to claim 1, it is characterized in that:Drilling rod with helical blade is long It is 1-8m to spend.
3. the method for replacing piled anchor of putting more energy into using the churning drilling tool construction pressure injection with helical blade, its step is as follows,
1) hole, is drawn using the drilling tool with helical blade, the soil body in hole is outwards conveyed through helical blade;
2), drilling to after projected depth, keep drilling rod and draw hole when rotation in the same direction, above carry drilling rod, helical blade displacement is portalled The interior soil body, while rotary jet grouting;
3) cement mortar or soil body curing agent slurries Fast Filling for, being sprayed by bit nozzle displace space in the hole of the soil body;
4), in the range of anchoring section, drilling rod can be moved back and forth, and the press-in that readvances of the drilling rod of rollback has been filled with the drilling of slurries In, while churning injection slurries, make the aperture of anchoring section become big, the diameter of the anchoring body of formation also accordingly increases;
5) after pressing grouting liquid in, drilling, drilling tool is exited into drilling, replaces with reducing drill bit, the drill bit of minor diameter is inserted into In anchor disk mesopore, the perpendicular anchor disk in drilling rod top of major diameter, traction dowel to design attitude.
4. the method that the churning drilling tool construction pressure injection used with helical blade according to claim 3 replaces piled anchor of putting more energy into, It is characterized in that, the drilling rod with helical blade takes out the soil body in hole in back off procedure, while grouting methol liquid or the soil body Curing agent slurries;The slurries for replacing pressure injection form the anchoring body of piled anchor of putting more energy into.
5. the method that the churning drilling tool construction pressure injection used with helical blade according to claim 3 replaces piled anchor of putting more energy into, It is characterized in that, traction dowel process and extract also sprayable slurries during drilling rod out.
CN201710072767.9A 2017-02-10 2017-02-10 The method that piled anchor of putting more energy into is replaced using the whirl spraying drilling tool construction pressure injection with helical blade Active CN106812473B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109162283A (en) * 2018-09-06 2019-01-08 江苏兴厦建设工程集团有限公司 A kind of reinforced cement-soil pile anchor support and its construction equipment and construction method
CN109505305A (en) * 2018-11-23 2019-03-22 绍兴大明电力设计院有限公司 High-pressure rotary-spray formula Screw Anchor composite foundation and preparation method thereof
CN112323779A (en) * 2019-08-05 2021-02-05 张继红 Construction method of long spiral bagged fluid pile
CN118273315A (en) * 2024-05-31 2024-07-02 广东交科检测有限公司 High-pressure jet grouting pile auxiliary construction device for rich water and weak mucky soil
CN118273315B (en) * 2024-05-31 2024-07-26 广东交科检测有限公司 High-pressure jet grouting pile auxiliary construction device for rich water and weak mucky soil

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02261121A (en) * 1989-03-30 1990-10-23 Aoki Corp Pile head processing method of cast-in-place concrete pile
CN1101392A (en) * 1993-10-06 1995-04-12 刘孝先 Pouring process for reinforced concrete piles
CN201671098U (en) * 2010-05-20 2010-12-15 上海强劲基础工程有限公司 Rotary spray mixing stiffened pile forming tool
CN103882859A (en) * 2014-04-03 2014-06-25 上海强劲地基工程股份有限公司 Original-state soil borrowing press-grouting concrete pile exerted by prestress and construction method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02261121A (en) * 1989-03-30 1990-10-23 Aoki Corp Pile head processing method of cast-in-place concrete pile
CN1101392A (en) * 1993-10-06 1995-04-12 刘孝先 Pouring process for reinforced concrete piles
CN201671098U (en) * 2010-05-20 2010-12-15 上海强劲基础工程有限公司 Rotary spray mixing stiffened pile forming tool
CN103882859A (en) * 2014-04-03 2014-06-25 上海强劲地基工程股份有限公司 Original-state soil borrowing press-grouting concrete pile exerted by prestress and construction method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109162283A (en) * 2018-09-06 2019-01-08 江苏兴厦建设工程集团有限公司 A kind of reinforced cement-soil pile anchor support and its construction equipment and construction method
CN109505305A (en) * 2018-11-23 2019-03-22 绍兴大明电力设计院有限公司 High-pressure rotary-spray formula Screw Anchor composite foundation and preparation method thereof
CN112323779A (en) * 2019-08-05 2021-02-05 张继红 Construction method of long spiral bagged fluid pile
CN118273315A (en) * 2024-05-31 2024-07-02 广东交科检测有限公司 High-pressure jet grouting pile auxiliary construction device for rich water and weak mucky soil
CN118273315B (en) * 2024-05-31 2024-07-26 广东交科检测有限公司 High-pressure jet grouting pile auxiliary construction device for rich water and weak mucky soil

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