CN109137893A - Self-feeding anchor pile construction technology - Google Patents
Self-feeding anchor pile construction technology Download PDFInfo
- Publication number
- CN109137893A CN109137893A CN201810821617.8A CN201810821617A CN109137893A CN 109137893 A CN109137893 A CN 109137893A CN 201810821617 A CN201810821617 A CN 201810821617A CN 109137893 A CN109137893 A CN 109137893A
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- China
- Prior art keywords
- hollow bolt
- anchor
- anchor pole
- row
- self
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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
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
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- 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)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of self-feeding anchor pile construction technology, major design main points are the preparations including rock drilling machine, hollow bolt, air pressure equipment and grouting pump；Setting-out is carried out to the position of anchor pole, the hollow bolt includes the body of rod and the drill bit for being mounted on rod end；The angle of hollow bolt is adjusted, and is directed at setting-out point, starting rock drilling machine drills；Grouting pump is connected to the end of hollow bolt, and grouting pump is filled with slurries into hollow bolt, is filled with after slurries reach ending standard, dismantles the connection of grouting pump and hollow bolt；Anchor pole totally three row from top to bottom, every row have multiple along its length, are displaced to another anchor pole setting-out point using way is jumped, repeat b, c, Step d；The jump way is that the anchor pole of every row does an anchor pole every two setting-out points, returns to construction in three times and completes；Three row's anchor poles are successively constructed every row from top to bottom.The present invention has interval construction anchor pole, reduces disturbance of the anchor bolt construction to geology.
Description
Technical field
The present invention relates to anchor bolt construction field, in particular to a kind of self-feeding anchor pile construction technology.
Background technique
Self-feeding anchor pile is a kind of hollow anchor pole, and including the body of rod and the drill bit for being mounted on rod end, drill bit makes anchor pole
Itself is able to carry out slip casting as the ability to drill, the hollow body of rod.Slurries are sprayed by hollow lever from drill bit when slip casting, are filled out
Drilling and the stratum crack for filling anchor pole make anchor pole tube body, form steel pipe concrete column, play the role of reinforcing, the size of drill bit can
Control the size of drilling.Since this anchor pole is using more convenient, so in existing engineer application than wide.
Due to the characteristic of self-feeding anchor pile, make it in application process, the general geological conditions of the occasion used is poor
Occasion, existing self-feeding anchor pile are generally carried out continuously construction anchor pole when constructing, when being carried out continuously construction anchor pole, due to previous
Anchor pole is not up to the intensity requirement solidified, so be easy to causeing the disturbance to geology larger when constructing anchor pole adjacent thereto.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of self-feeding anchor pile construction technology,
With interval construction anchor pole, disturbance of the anchor bolt construction to geology is reduced.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of self-feeding anchor pile construction technology, step include that equipment prepares: being set including rock drilling machine, hollow bolt, air pressure
Standby and grouting pump；Drilling: setting-out is carried out to the position of anchor pole, hollow bolt is mounted on the output end of rock drilling machine, described
Hollow bolt includes the body of rod and the drill bit for being mounted on rod end；The angle of hollow bolt is adjusted, and is directed at setting-out point, is opened
Dynamic rock drilling machine drills；Borehole cleaning: air pressure equipment connects the end of hollow bolt, and starting air pressure equipment is to hollow
The air with pressure is passed through in anchor pole；Slip casting: removing air pressure equipment from the end of hollow bolt, during grouting pump is connected to
The end of spare anchor bar, grouting pump are filled with slurries into hollow bolt, are filled with after slurries reach ending standard, dismantle grouting pump in
The connection of spare anchor bar；Circulation step b, c, d, reach projected depth；Displacement: anchor pole totally three row from top to bottom, every row is along length side
It is multiple to having, it is displaced to another anchor pole setting-out point using way is jumped, repeats b, c, Step d；The jump way is every row
Anchor pole do an anchor pole every two setting-out points, in three times return construction complete；Three row's anchor poles are successively constructed from top to bottom
Every row.
By using above-mentioned technical proposal, after hollow bolt is drilled, first the small gravel in drilling is purged, so
Connection grouting pump completes the construction of single anchor pole to slurries are filled in drilling afterwards, when carrying out next anchor pole, by jumping way
When construction, the anchor pole of next construction at least differs two setting-out points with previous not solidified anchor pole position, works as return
When construction is with first adjacent layout point in anchor pole position, anchor pole has solidified, so anchor bolt construction can be reduced to geology
Disturbance.
The present invention is further arranged to: the hollow bolt further includes connector sleeve, and creeping into step further includes first bar
Body is crept into place, and the body of rod is unloaded from the output end of rock drilling machine, is socketed the next body of rod with connection.
By using above-mentioned technical proposal, when the curtailment of hollow bolt, passes through connector sleeve and connect two or more
The body of rod increases the length of hollow bolt, increases the range of bolt anchorage, reaches the requirement of design.
The present invention is further arranged to: slurries used in the slip casting are two kinds of liquid mixing of cement and waterglass
Slurry.
By using above-mentioned technical proposal, the mixing slurry of cement and waterglass can expand the range of cement injection, and
The solidification for accelerating slurries, is further reduced disturbance of the anchor bolt construction to geology.
The present invention is further arranged to: the quality of water is 50% in the slurries, and the quality of cement is 25%, the matter of waterglass
Amount is 25%.
By using above-mentioned technical proposal, the range of scatter of cement is further increased, and the setting time of slurries is unlikely to
Time is longer, improves the range of bolt anchorage.
The present invention is further arranged to: the concentration of the waterglass is greater than 35 Baume degrees.
By using above-mentioned technical proposal, when concentration is greater than 35 Baume degrees, the setting time of cement is lengthened to 60s, into one
Step improves the range of scatter of cement, improves the range of bolt anchorage.
The present invention is further arranged to: the grouting pressure of the grouting pump is controlled in 0.1~0.3Mpa.
By using above-mentioned technical proposal, when grouting pressure is 0.1~0.3Mpa, the dilation angle of slurries is 0.5m,
Reinforce the intensity of anchor pole.
The present invention is further arranged to: the ending standard be grout absorption be have reached design grout absorption 100%, or
In the case where designing maximum pump pressure, grout absorption reaches the 80% of design grout absorption, or maintains 2 to 3 minutes in the case where designing maximum pump pressure, into
Slurry amount is less than the 80% of design grout absorption.
By using above-mentioned technical proposal, for grout absorption, grout absorption is set to be divided into three kinds of feelings by the ending standard of design
Condition includes that grout absorption is enough, reaches 80% or less than 80%, terminate to avoid overlong time into slurry in time.
The present invention is further arranged to: the slip casting further includes that should clean the connection of connector grouting pump and hollow bolt in time
Connector.
By using above-mentioned technical proposal, the jointing of grouting pump and hollow bolt is cleaned after the completion of slip casting in time, is subtracted
Few slurries are condensed in junction, to improve next time into continuity when starching.
The present invention is further arranged to: the distance between anchor pole described in three rows is 300mm, and the two of every row from top to bottom
The distance between a adjacent anchor pole is 300mm.
By using above-mentioned technical proposal, each anchor pole the distance between anchor pole adjacent thereto is 300mm, makes anchor pole
All after the completion of construction, an entirety can be effectively connected between multiple anchor poles inside ground, improves the intensity of anchor pole.
In conclusion the invention has the following advantages:
1. by using the method for interval construction, construct next anchor pole when, be always spaced the construction of two setting-out points, reduce
When continuous construction anchor pole, the influence of not solidified anchor pole reduces influence of the anchor bolt construction to geology；
2. improving the rapid condensation of cement by using the mixed liquor of cement and two kinds of slurries of waterglass, further decreasing anchor pole
The influence of construction；
3. making the range of scatter of cement be greater than the spacing of anchor pole, to make more by the concentration of control grouting pressure and waterglass
A anchor pole links together inside ground, improves anchor pole.
Detailed description of the invention
Fig. 1 is the process schematic of self-feeding anchor pile construction technology；
Fig. 2 is the perspective view of hollow bolt.
Appended drawing reference: 1, hollow bolt；11, the body of rod；12, connector sleeve；13, drill bit.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.The wherein identical appended drawing reference of identical components
It indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to it is attached
Direction in Fig. 2, word " bottom surface " and " top surface ", "inner" and "outside" are referred respectively to towards or away from geometric center of specific component
Direction.
A kind of self-feeding anchor pile construction technology, with reference to Fig. 1, including equipment preparation, drilling, borehole cleaning, slip casting and displacement.
Equipment prepares: referring to Fig. 2, including prepares rock drilling machine, hollow bolt 1, air pressure equipment and grouting pump, chisel
Rock drilling machine uses the guide tracked independent rotary drilling drilling machine of YGZ170；Anchor pole uses hollow bolt 1, and hollow bolt 1 includes the body of rod 11
With the drill bit 13 of installation 11 front end of the body of rod, and the connector sleeve 12 for connecting two bodies of rod 11, grouting pump uses KBY-50/70
Hydraulic grouting pump checks grouting pump and its complete situation of components.The output end of anchor pole to rock drilling machine is installed.
Drilling: it refers to Fig. 2 and connects drill bit 13 and hollow bolt 1 after the completion of rock drilling machine positioning.Staff couple
1 position of hollow bolt carries out setting-out, after setting-out, adjusts drilling machine angle and starts to start rock drilling machine.A piece body of rod
After 11 creep into place, rock drilling machine is inverted, the body of rod 11 is unloaded from the output end of rock drilling machine, is then connect with connector sleeve 12 next
The root body of rod 11 reconnects the output end of the body of rod 11 to rock drilling machine, continues starting rock drilling machine and is crept into, every time continuous drilling
Depth be 0.5 meter to 1 meter.
Borehole cleaning: for rock drilling machine during drilling, the outer of hollow bolt 1 is terminated with air pressure equipment, air pressure
Equipment is passed through the air with pressure to the middle part of hollow bolt 1, and air is flowed out from the end of hollow bolt 1, makes hollow bolt 1
The fine sand in hole drilled out blows to the outside of drilling.
Slip casting: removing air pressure equipment from the outer end of hollow bolt 1, grouting pump be connected to the end of hollow bolt 1,
Grouting pump, slip casting pump work are opened, grouting pump flows into slurries into hollow bolt 1, and slurries use two kinds of cement and waterglass
Liquid mixing slurry, mixed proportion account for 25% for the quality that the quality that the quality of water accounts for 50%, cement accounts for 25%, waterglass；Waterglass
Concentration is greater than 35 Baume degrees；Observation slurries are indicated from aperture hat brim edge outflow situation and the grouting pressure being mounted on grouting pump
Value；Grouting pressure control forms 1.5m slab beam in 0.1~0.3Mpa, grout spreading range 0.5m, and slip casting reaches end bar
On time, the link position of grouting pump Yu hollow bolt 1 is dismantled.
Circulation step drilling, borehole cleaning and slip casting, the predetermined depth until reaching anchor pole, predetermined depth are selected as 10 meters, finally
Remove rock drilling machine.
Ending standard: grout absorption has reached the 100% of design grout absorption；Or grout absorption reaches in the case where designing maximum pump pressure
Design the 80% of grout absorption；Or maintained 2 to 3 minutes in the case where designing maximum pump pressure, grout absorption is less than the 80% of design grout absorption.
At the end of each slip casting, the jointing of connector grouting pump Yu hollow bolt 1 should be cleaned in time, avoid grouting pump and
The outer grout cures of the jointing of hollow bolt 1, hollow bolt 1 is blocked in next slip casting.
Displacement: totally three rows, the spacing of two rows of anchor poles are 300mm to anchor bolt construction from top to bottom, between single two interior anchor poles
Away from for 300mm.Repeated plant prepares, drilling, the process of borehole cleaning and slip casting construct to other anchor poles.In order to reduce from into
Disturbance of the formula anchor bolt construction to stratum is constructed using way is jumped, and jumping way is the anchor pole of every row every two setting-out points
An anchor pole is done, construction is returned in three times and completes.Three row's anchor poles are successively constructed every row from top to bottom.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (9)
1. a kind of self-feeding anchor pile construction technology, it is characterised in that: step includes
A, equipment prepares: including rock drilling machine, hollow bolt, air pressure equipment and grouting pump；
B, it creeps into: setting-out being carried out to the position of anchor pole, hollow bolt is mounted on the output end of rock drilling machine, the middle spare anchor
Bar includes the body of rod and the drill bit for being mounted on rod end；The angle of hollow bolt is adjusted, and is directed at setting-out point, starts rock drilling
Drilling machine drills；
C, borehole cleaning: air pressure equipment connects the end of hollow bolt, and starting air pressure equipment is passed through band into hollow bolt
There is the air of pressure；
D, slip casting: air pressure equipment is removed from the end of hollow bolt, grouting pump is connected to the end of hollow bolt, grouting pump
It is filled with slurries into hollow bolt, is filled with after slurries reach ending standard, dismantles the connection of grouting pump and hollow bolt；Circulation step
Rapid b, c, d, reach projected depth；
E, shift: anchor pole totally three row from top to bottom, every row have multiple along its length, are displaced to another anchor pole using way is jumped
Setting-out point repeats b, c, Step d；The jump way is that the anchor pole of every row does an anchor pole every two setting-out points, point
Construction is returned three times to complete；Three row's anchor poles are successively constructed every row from top to bottom.
2. self-feeding anchor pile construction technology according to claim 1, it is characterised in that: the hollow bolt further includes connection
Set, creeping into step further includes that first body of rod is crept into place, and the body of rod is unloaded from the output end of rock drilling machine, is socketed with connection
The next body of rod.
3. self-feeding anchor pile construction technology according to claim 1, it is characterised in that: slurries used in the slip casting are
Two kinds of liquid mixing slurries of cement and waterglass.
4. self-feeding anchor pile construction technology according to claim 3, it is characterised in that: the quality of water is in the slurries
50%, the quality of cement is 25%, and the quality of waterglass is 25%.
5. self-feeding anchor pile construction technology according to claim 4, it is characterised in that: the concentration of the waterglass is greater than 35
Baume degrees.
6. self-feeding anchor pile construction technology according to claim 1, it is characterised in that: the grouting pressure control of the grouting pump
System is in 0.1~0.3Mpa.
7. self-feeding anchor pile construction technology according to claim 6, it is characterised in that: the ending standard is that grout absorption is
The 100% of design grout absorption is had reached, perhaps grout absorption reaches the 80% of design grout absorption or setting in the case where designing maximum pump pressure
It is maintained 2 to 3 minutes under meter maximum pump pressure, grout absorption is less than the 80% of design grout absorption.
8. self-feeding anchor pile construction technology according to claim 1, it is characterised in that: the slip casting further includes should be clear in time
Wash the jointing of connector grouting pump and hollow bolt.
9. self-feeding anchor pile construction technology according to claim 1, it is characterised in that: from top to bottom anchor pole described in three rows it
Between distance be 300mm, and the distance between two adjacent anchor poles of every row be 300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810821617.8A CN109137893A (en) | 2018-07-24 | 2018-07-24 | Self-feeding anchor pile construction technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810821617.8A CN109137893A (en) | 2018-07-24 | 2018-07-24 | Self-feeding anchor pile construction technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109137893A true CN109137893A (en) | 2019-01-04 |
Family
ID=64797767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810821617.8A Pending CN109137893A (en) | 2018-07-24 | 2018-07-24 | Self-feeding anchor pile construction technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109137893A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112281836A (en) * | 2020-10-16 | 2021-01-29 | 中国建筑第八工程局有限公司 | Self-drilling anchor rod construction method for pore submersible deep foundation pit |
| CN114876541A (en) * | 2022-05-24 | 2022-08-09 | 成都理工大学 | Mortar anchor rod drilling device for building construction |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2008201006A1 (en) * | 2000-08-08 | 2008-04-03 | Tristanagh Pty Ltd | Earth Anchoring System |
| CN105888709A (en) * | 2016-04-28 | 2016-08-24 | 中国矿业大学(北京) | Self-drilling grouted rock bolt |
| CN105970955A (en) * | 2016-06-07 | 2016-09-28 | 青岛海川建设集团有限公司 | Self-drilling type nail and pipe combined double-liquid grouting soil nail construction process |
| CN105986574A (en) * | 2015-01-30 | 2016-10-05 | 重庆雄创建筑工程技术有限公司 | Hollow grouting anchor rod construction process |
-
2018
- 2018-07-24 CN CN201810821617.8A patent/CN109137893A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2008201006A1 (en) * | 2000-08-08 | 2008-04-03 | Tristanagh Pty Ltd | Earth Anchoring System |
| CN105986574A (en) * | 2015-01-30 | 2016-10-05 | 重庆雄创建筑工程技术有限公司 | Hollow grouting anchor rod construction process |
| CN105888709A (en) * | 2016-04-28 | 2016-08-24 | 中国矿业大学(北京) | Self-drilling grouted rock bolt |
| CN105970955A (en) * | 2016-06-07 | 2016-09-28 | 青岛海川建设集团有限公司 | Self-drilling type nail and pipe combined double-liquid grouting soil nail construction process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112281836A (en) * | 2020-10-16 | 2021-01-29 | 中国建筑第八工程局有限公司 | Self-drilling anchor rod construction method for pore submersible deep foundation pit |
| CN114876541A (en) * | 2022-05-24 | 2022-08-09 | 成都理工大学 | Mortar anchor rod drilling device for building construction |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20190104 |