CN111197306A - Double-high-pressure rotary-spraying stirring drill bit and construction method thereof - Google Patents
Double-high-pressure rotary-spraying stirring drill bit and construction method thereof Download PDFInfo
- Publication number
- CN111197306A CN111197306A CN201811391041.2A CN201811391041A CN111197306A CN 111197306 A CN111197306 A CN 111197306A CN 201811391041 A CN201811391041 A CN 201811391041A CN 111197306 A CN111197306 A CN 111197306A
- Authority
- CN
- China
- Prior art keywords
- pressure
- stirring
- drill bit
- pressure water
- grouting pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003756 stirring Methods 0.000 title claims abstract description 51
- 238000005507 spraying Methods 0.000 title claims abstract description 31
- 238000010276 construction Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000002689 soil Substances 0.000 claims abstract description 21
- 238000002347 injection Methods 0.000 claims abstract description 17
- 239000007924 injection Substances 0.000 claims abstract description 17
- 238000005520 cutting process Methods 0.000 claims abstract description 9
- 239000011440 grout Substances 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
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
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a double high-pressure rotary spraying stirring drill bit and a construction method thereof, wherein the double high-pressure rotary spraying stirring drill bit comprises a drill bit and a drill rod provided with stirring blades, a normal-pressure grouting pipe is arranged in the drill rod, a high-pressure grouting pipe and a high-pressure water injection pipe which are arranged in a delta shape with the normal-pressure grouting pipe are arranged in the drill rod, a high-pressure spraying port of the high-pressure grouting pipe and a high-pressure water spraying port of the high-pressure water injection pipe are arranged below the stirring blades close to the drill bit, and the high-pressure water spraying port is arranged above the high-pressure; the normal pressure nozzle of the normal pressure grouting pipe is arranged at the joint of the drill bit and the drill rod and performs rotary spraying, stirring and cutting on the soil body together with the high pressure grout spraying port and the high pressure water spraying port. Compared with the prior art, the invention has the advantages of simple structure, large pile forming diameter, good pile forming quality, high construction speed and the like.
Description
Technical Field
The invention relates to the technical field of pile foundation drilling machines, in particular to a rotary spraying stirring drill bit for a large-diameter rotary stirring pile supporting structure.
Background
At present, the support of deep foundation pits in China generally adopts a stirring pile support structure, for example, a gravity type soil retaining wall adopts a double-shaft and three-shaft process, and as the hole forming diameter of a stirring drill bit is limited, the diameter of a pile hole is small, the lap joints among piles are more, the construction speed is slow, and the quality of the support structure is easily influenced; the deep foundation pit is reinforced by adopting double shafts, three shafts, rotary spraying and the like, the engineering quantity is large, and the construction period is longer and the engineering cost is higher due to the small diameter and the low pile forming speed of a single pile.
The stirring drill bit or the rotary spraying drill bit in the prior art has poor soil body cutting capability, the effective pile forming diameter is small, the rotary stirring drill bit or the rotary spraying drill bit cannot be used for rotary stirring pile construction with an oversized diameter, and particularly, the application of deep and large foundation pit supporting and reinforcing structures is limited, the construction speed is low, the construction period is long, and the engineering cost is high.
Disclosure of Invention
The invention aims to provide a double high-pressure rotary-jetting stirring drill bit and a construction method thereof aiming at the defects of the prior art, a drill rod structure with a high-pressure water jet and a high-pressure grouting opening additionally arranged below a blade is adopted, the cutting capability to peripheral soil bodies and the effective diameter of a rotary stirring pile are greatly improved, the construction period is greatly shortened, the ultra-large-diameter rotary stirring drill bit with good pile forming quality and high construction speed is provided for the rotary stirring support pile and the reinforced pile of a deep foundation pit, the engineering cost is further reduced, and the economic benefit of an enterprise is improved. The purpose of the invention is realized as follows:
a double high-pressure rotary-jetting stirring drill bit structurally comprises a drill bit and a drill rod provided with stirring blades, wherein a normal-pressure grouting pipe is arranged in the drill rod, a high-pressure grouting pipe and a high-pressure water injection pipe which are arranged in a delta shape with the normal-pressure grouting pipe are arranged in the drill rod, a high-pressure jetting port of the high-pressure grouting pipe and a high-pressure water jetting port of the high-pressure water injection pipe are arranged below the stirring blades close to the drill bit, and the high-pressure water jetting port is arranged above the high-pressure jetting port; the normal pressure nozzle of the normal pressure grouting pipe is arranged at the joint of the drill bit and the drill rod and performs rotary spraying, stirring and cutting on the soil body together with the high pressure grout spraying port and the high pressure water spraying port.
The pressure of the grouting and water injection in the high-pressure grouting pipe and the high-pressure water injection pipe reaches 20MPa to 40 MPa.
A construction method of a double high-pressure rotary jet stirring drill bit is implemented according to the following steps:
the stirring drill bit is used for stirring and sinking to a designed elevation, soil around the drill bit is subjected to primary stirring and cutting, a high-pressure water injection pump is started to spray high-pressure water from a high-pressure water spray nozzle to secondarily cut the soil, a high-pressure grouting pump is started to spray high-pressure slurry from a high-pressure slurry spray nozzle to cut the soil for three times, and finally the soil is combined with the inner core stirring pile to form the large-diameter rotary spraying stirring cement soil pile.
Compared with the prior art, the rotary jet stirring pile has the advantages of simple structure, large cutting capacity on soil, large pile forming diameter and high rotary jet stirring efficiency, particularly meets the requirements of a deep foundation pit on an oversized-diameter rotary stirring support pile and a reinforcing pile, has good pile forming quality, high construction speed and short construction period, further reduces engineering cost and improves economic benefits of enterprises.
Drawings
FIG. 1 is a structural diagram of a dual high-pressure rotary-jetting stirring drill bit
FIG. 2 is a top view of FIG. 1
The figure is as follows: 1 is a drill rod, 2 is a high-pressure grouting pipe, 3 is a stirring blade, 4 is a high-pressure guniting port, 5 is a drill bit, 6 is a normal-pressure nozzle, 7 is a normal-pressure grouting pipe, 8 is a high-pressure water injection pipe, and 9 is a high-pressure water spraying port.
Detailed Description
Referring to the attached drawings 1-2, the invention consists of a drill bit 5 and a drill rod 1 provided with a high-pressure grouting pipe 2, a high-pressure water injection pipe 8, a stirring blade 3 and a normal-pressure grouting pipe 7, wherein the high-pressure grouting pipe 2 and the high-pressure water injection pipe 8 which are arranged in a delta shape with the normal-pressure grouting pipe 7 are arranged in the drill rod 1, a high-pressure guniting port 4 of the high-pressure grouting pipe 2 and a high-pressure water spraying port 9 of the high-pressure water injection pipe 8 are arranged below the stirring blade 3 close to the drill bit 5, and the high-pressure water spraying port 9 is arranged above the high-pressure guniting; and the normal pressure nozzle 6 of the normal pressure grouting pipe 7 is arranged at the joint of the drill bit 5 and the drill rod 1, and performs rotary spraying and stirring on the soil body together with the high pressure grout spraying port 3 and the high pressure water spraying port 9.
The invention is used as follows: the stirring blade 3 of the drill bit of the pile machine is rotated and sunk, cement slurry is injected into a pile hole through the normal pressure nozzle 6 of the normal pressure grouting pipe 7, the stirring drill bit is used for stirring to the elevation of the pile bottom, the peripheral soil body is stirred and cut for the first time, then high-pressure water spraying and high-pressure rotary spraying grouting are carried out, high-pressure water firstly carries out secondary high-pressure cutting on the peripheral soil body through the high-pressure water spraying port 9 of the high-pressure water injection pipe 8, the high-pressure cement slurry is sprayed out at high speed through the high-pressure nozzle 4 of the high-pressure grouting pipe 2 and cuts the soil body for the third time at high pressure, and meanwhile, the stirring and lifting are carried out, finally, the rotary.
The invention is further described and not intended to be limited to the embodiments disclosed herein, but rather to be accorded the full scope and equivalents of the claims.
Claims (3)
1. A double high-pressure rotary-jetting stirring drill bit is characterized in that the stirring drill bit structure comprises a drill bit and a drill rod provided with stirring blades, wherein a normal-pressure grouting pipe is arranged in the drill rod, a high-pressure grouting pipe and a high-pressure water injection pipe which are arranged in a delta shape with the normal-pressure grouting pipe are arranged in the drill rod, a high-pressure jetting port of the high-pressure grouting pipe and a high-pressure water jetting port of the high-pressure water injection pipe are arranged below the stirring blades close to the drill bit, and the high-pressure water jetting port is arranged above the high-pressure jetting port; the normal pressure nozzle of the normal pressure grouting pipe is arranged at the joint of the drill bit and the drill rod and performs rotary spraying, stirring and cutting on the soil body together with the high pressure grout spraying port and the high pressure water spraying port.
2. The dual high pressure rotary jet mixing drill bit as claimed in claim 1, wherein the pressure of the grouting and water injection in the high pressure grouting pipe and the high pressure water injection pipe is up to 20 MPa-40 MPa.
3. A construction method of a double high-pressure rotary jet stirring drill bit is characterized by comprising the following steps:
the stirring drill bit is used for stirring and sinking to a designed elevation, soil around the drill bit is subjected to primary stirring and cutting, a high-pressure water injection pump is started to spray high-pressure water from a high-pressure water spray nozzle to secondarily cut the soil, a high-pressure grouting pump is started to spray high-pressure slurry from a high-pressure slurry spray nozzle to cut the soil for three times, and finally the soil is combined with the inner core stirring pile to form the large-diameter rotary spraying stirring cement soil pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811391041.2A CN111197306A (en) | 2018-11-19 | 2018-11-19 | Double-high-pressure rotary-spraying stirring drill bit and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811391041.2A CN111197306A (en) | 2018-11-19 | 2018-11-19 | Double-high-pressure rotary-spraying stirring drill bit and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111197306A true CN111197306A (en) | 2020-05-26 |
Family
ID=70744205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811391041.2A Pending CN111197306A (en) | 2018-11-19 | 2018-11-19 | Double-high-pressure rotary-spraying stirring drill bit and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111197306A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112390550A (en) * | 2020-09-30 | 2021-02-23 | 温州大学 | Geopolymer, high-pressure jet grouting pile construction process thereof and high-pressure jet grouting machine |
| CN113136860A (en) * | 2021-04-21 | 2021-07-20 | 重鑫岩土技术(上海)有限公司 | Multi-liquid composite micro-disturbance cement mixing pile equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962949A (en) * | 2009-07-23 | 2011-02-02 | 北京中岩大地工程技术有限公司 | Long spiral double-pipe high-pressure stir-jet grouting pile construction method and device |
| CN201826303U (en) * | 2010-07-06 | 2011-05-11 | 袁小忠 | Long-spiral high/low-pressure multi-pipe self-drilling type mixing jet grouting pile forming device |
| CN203613531U (en) * | 2013-12-25 | 2014-05-28 | 深圳市鼎邦工程有限公司 | Jet grouting and stirring composite construction drill bit for large-diameter compound section cement-soil pile |
| CN108086915A (en) * | 2018-01-04 | 2018-05-29 | 上海智平基础工程有限公司 | A kind of major diameter jet mixing drill bit |
| CN209162812U (en) * | 2018-11-19 | 2019-07-26 | 上海城地建设股份有限公司 | A kind of double-high-pressure spun jet stirring drill bit |
-
2018
- 2018-11-19 CN CN201811391041.2A patent/CN111197306A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962949A (en) * | 2009-07-23 | 2011-02-02 | 北京中岩大地工程技术有限公司 | Long spiral double-pipe high-pressure stir-jet grouting pile construction method and device |
| CN201826303U (en) * | 2010-07-06 | 2011-05-11 | 袁小忠 | Long-spiral high/low-pressure multi-pipe self-drilling type mixing jet grouting pile forming device |
| CN203613531U (en) * | 2013-12-25 | 2014-05-28 | 深圳市鼎邦工程有限公司 | Jet grouting and stirring composite construction drill bit for large-diameter compound section cement-soil pile |
| CN108086915A (en) * | 2018-01-04 | 2018-05-29 | 上海智平基础工程有限公司 | A kind of major diameter jet mixing drill bit |
| CN209162812U (en) * | 2018-11-19 | 2019-07-26 | 上海城地建设股份有限公司 | A kind of double-high-pressure spun jet stirring drill bit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112390550A (en) * | 2020-09-30 | 2021-02-23 | 温州大学 | Geopolymer, high-pressure jet grouting pile construction process thereof and high-pressure jet grouting machine |
| CN113136860A (en) * | 2021-04-21 | 2021-07-20 | 重鑫岩土技术(上海)有限公司 | Multi-liquid composite micro-disturbance cement mixing pile equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106996105B (en) | Down-the-hole impact jet grouting stirring pile construction technology and equipment | |
| CN202300203U (en) | Drill bit for nail-shaped two-way soil cement mixing pile forming machine | |
| CN204175177U (en) | The embedding rock construction equipment of a kind of reinforced long spire | |
| CN205907679U (en) | Cast -in -place strength core stirring stake | |
| CN104563099A (en) | Porous pipe method large-diameter high-pressure jet grouting pile construction method | |
| CN104234042A (en) | Concrete pile forming device and construction method thereof | |
| CN111577136A (en) | High-pressure jet grouting pile hole guiding construction integrated device and construction method thereof | |
| CN104018493A (en) | Double-shaft air-injection rotary jet type stirring pile machine and method for forming pile by using pile machine | |
| CN201395793Y (en) | Long spiral high-pressure spraying mud injecting stirring pile-forming device | |
| CN111197306A (en) | Double-high-pressure rotary-spraying stirring drill bit and construction method thereof | |
| CN111101535A (en) | Offshore wind power multi-pile-suction bucket-jacket foundation structure and construction method thereof | |
| CN111364532B (en) | Existing pile foundation reinforcement method based on slurry control | |
| CN105863694B (en) | Chamber device and its construction method are expanded in a kind of anchor pole end | |
| CN207260138U (en) | Drill rod of high-pressure jet grouting stirring bearing pile and device with drill rod | |
| CN213061989U (en) | High-pressure rotary spraying device | |
| CN102235008B (en) | Engineering pile deviation preventing structure of soft soil foundation and pretreatment method | |
| CN101205718A (en) | Method and equipment for seepage-proofing construction of dam and foundation pit | |
| CN211849560U (en) | Offshore wind power multi-pile-suction bucket-jacket foundation structure | |
| CN111005365A (en) | Drilling tool for pressure grouting of cement soil static pressure pipe pile and construction method | |
| CN104612137A (en) | Perforated pipe method super-deep, fast, and super-large diameter high pressure chemical churning pile construction method | |
| CN114352189B (en) | Construction method of jet grouting pile | |
| CN108589715B (en) | Construction method for taking soil, spraying and stirring cement soil pile | |
| JPH10311024A (en) | High pressure injection agitating method | |
| CN203809009U (en) | Triple tube rotary jet grouting reinforcement system | |
| CN207934027U (en) | Uniaxial drill bit for cement deep layer mixing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |