CN106522220A - Partitioned high-pressure hole blockage grouting anchor rod and grouting method thereof - Google Patents
Partitioned high-pressure hole blockage grouting anchor rod and grouting method thereof Download PDFInfo
- Publication number
- CN106522220A CN106522220A CN201710002322.3A CN201710002322A CN106522220A CN 106522220 A CN106522220 A CN 106522220A CN 201710002322 A CN201710002322 A CN 201710002322A CN 106522220 A CN106522220 A CN 106522220A
- Authority
- CN
- China
- Prior art keywords
- high pressure
- pipe
- plugging device
- bolt body
- steel strand
- 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
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 33
- 239000010959 steel Substances 0.000 claims abstract description 33
- 230000001603 reducing Effects 0.000 claims abstract description 10
- 238000006722 reduction reaction Methods 0.000 claims abstract description 10
- 239000011083 cement mortar Substances 0.000 claims description 20
- 206010060708 Induration Diseases 0.000 claims description 14
- 238000004873 anchoring Methods 0.000 claims description 12
- 238000007569 slipcasting Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005273 aeration Methods 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010802 sludge Substances 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
- 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
-
- 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
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/021—Grouting with inorganic components, e.g. cement
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/0046—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts formed by a plurality of elements arranged longitudinally
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0046—Production methods using prestressing techniques
Abstract
The invention discloses a partitioned high-pressure hole blockage grouting anchor rod and a grouting method thereof. The anchor rod comprises an anchor rod body; the anchor rod body is a hollow round pipe; a compressable high-pressure hole blockage machine is arranged in the anchor rod body for cutting the anchor rod body into an anchor section and a non-anchor section; an injecting pipe is arranged in the center of the anchor rod body, and is parallel to the anchor rod; the injecting pipe penetrates through the left and right two ends of the compressable high-pressure hole blockage machine; the left and right two ends of the injecting pipe are respectively arranged in the anchor section and the non-anchor section of the anchor rod body; a steel strand is arranged on the outer side of the injecting pipe, and is provided with a non-anchor section sleeve on the outer side of the non-anchor section; and a compressable high-pressure hole blockage machine aeration pipe is arranged between the non-anchor section sleeve and the anchor rod body. The anchor rod has the beneficial effects of reasonable structure design, improvement of the uplift bearing capacity and reduction of the construction cost.
Description
Technical field
The invention belongs to mooring rod technique field, and in particular to a kind of partition-type high pressure plug-hole grouted anchor bar, the present invention is also carried
A kind of grouting method of partition-type high pressure plug-hole grouted anchor bar is supplied.
Background technology
The anchor pole constructed currently on the market does not use total length high-pressure slip-casting mode substantially, using it is more be secondary splitting note
Slurry mode, this secondary splitting grouting mode are that two Grouting Pipes are put in bolthole, and one is used for initial slip casting, treat initial
The cement mortar of injection passes through second Grouting Pipe high-pressure injected water mud after producing final set, cement mortar is noted by high pressure splitting
Slurry.
Existing anchor pole does not adopt full anchoring section high-pressure slip-casting, and only with secondary splitting grouting mode, which is quality controllable
Property it is poor, the position in such as splitting hole accurately can not control, and cement mortar can not be held in the diffusion of hole wall periphery, cause anti-pulling of anchor bar
Differ greatly, anchor pole anti-pulling capacity improves few and unstable；On the other hand it is the non-anchored section and the water of anchoring section of anchor pole
Sludge consolidating is not turned off, most destructible inter-pile soil retaining wall body and the non-anchored section soil body when anchor pole applies prestressing force, can not
Accurately measure anchor rod anchored section of anti-pulling capacity.Between this, it is badly in need of a kind of partition-type high pressure plug-hole grouted anchor bar.
The content of the invention
It is an object of the invention to provide a kind of partition-type high pressure plug-hole grouted anchor bar and its grouting method, above-mentioned to solve
The problem proposed in background technology.
For achieving the above object, the present invention provides following technical scheme：A kind of partition-type high pressure plug-hole grouted anchor bar, including
Bolt body, the bolt body is hollow circular-tube, and the bolt body is internally provided with compressible high pressure plugging device, it is described can
Bolt body is divided into anchoring section and non-anchored section, the bolt body central authorities to be provided with note pipe, institute by compression high pressure plugging device
State to note to manage and be arranged in parallel with bolt body, the note is managed through the left and right two ends of compressible high pressure plugging device, and a left side for note pipe,
Right two ends are separately positioned on the anchoring section of bolt body and non-anchored intersegmental part, are provided with steel strand wires, and steel on the outside of the note pipe
Twisted wire is circumferentially uniformly inserted in compressible high pressure plugging device, and the steel strand wires are located on the outside of non-anchored section and are provided with non-anchored
Section sleeve pipe, is provided with compressible high pressure plugging device air-inflating tube, and compressible height between the non-anchored section sleeve pipe and bolt body
Pressure plugging device air-inflating tube be arranged in the non-anchored section of bolt body, described compressible high pressure plugging device air-inflating tube one end with can press
Contracting high pressure plugging device is fixedly connected, and the compressible high pressure plugging device air-inflating tube other end is provided with air-inflating tube valve inside, the anchor pole
Body interior is perfused with induration.
Preferably, the bolt body is internally provided with the anti-sunken bracing frame of the drag reduction for equidistantly distributing, and two adjacent groups subtract
The distance between anti-sunken bracing frame of resistance is 1.5-2m, and the steel strand wires insertion drag reduction is prevented falling in the through hole of bracing frame.
Preferably, the steel strand wires are be arranged in parallel with note pipe, and two groups of steel strand wires are symmetrical with regard to the axis of note pipe.
Preferably, the note pipe is plastic tube or steel pipe, and notes a diameter of 25mm of pipe.
Preferably, the induration is cement mortar induration or cement mortar induration.
Present invention also offers a kind of grouting method of partition-type high pressure plug-hole grouted anchor bar, specifically includes following steps,
S1：Compressible high pressure plugging device is installed on into the non-anchored section and anchoring section intersection of anchor pole；
S2：By the string holes for not having steel strand with hole plug block, steel strand wires periphery, Grouting Pipe periphery with blocked with glass cement；
S3：The appropriate location that colligation good anchor pole steel strand wires are inserted in bolthole；
S4：Injection cement mortar (or cement mortar) for the first time suspends slip casting to anchor pole aperture, fills to compressible high pressure plugging device
Then gas, its blowing pressure to 1.5MPa fill into cement mortar by Grouting Pipe, grouting pressure to 0.5～1.5MPa, and continue when
Between 2～10min clocks, closure Grouting Pipe maintenance, and carry out to gas tube and Grouting Pipe closure protection；
S5：The inflation in compressible high pressure plugging device is bled off in anchor pole tensioning, the tensioning fixation of anchor pole is then carried out.
The technique effect and advantage of the present invention：The partition-type high pressure plug-hole grouted anchor bar and its grouting method, the full anchor of anchor pole
Gu section high-pressure injected water mud, improves the anti-pulling capacity of anchor pole；The power of anchor rod anchored section of cut-off is passed to non-anchored section induration
Pass；Anchor rod anchored section of anti-pulling capacity can be accurately measured by test；Eliminate and apply prestressing force to retaining wall between stake because of anchor pole
The extruding of body is destroyed, is eliminated because applying prestressing force to the soil body in anchor pole non-anchored section cement mortar induration and non-anchored segment limit
Extruding destruction.The partition-type high pressure plug-hole grouted anchor bar and its grouting method, reasonable in design, the resistance to plucking for improving anchor pole are carried
Power, reduces construction costs.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is enlarged drawing at the B of Fig. 1 of the present invention.
In figure：1 bolt body, 2 steel strand wires, 3 note pipes, 4 indurations, 5 compressible high pressure plugging devices, 6 non-anchored section sleeve pipes,
7 drag reductions anti-sunken bracing frame, 8 compressible high pressure plugging device air-inflating tubes, 9 air-inflating tube valve insides.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The invention provides a kind of partition-type high pressure plug-hole grouted anchor bar as shown in Figure 1-2, including bolt body 1, institute
Bolt body 1 is stated for hollow circular-tube, the bolt body 1 is internally provided with compressible high pressure plugging device 5, the compressible high pressure
Bolt body 1 is divided into anchoring section and non-anchored section, 1 central authorities of the bolt body to be provided with note pipe 3, the note by plugging device 5
Pipe 3 is be arranged in parallel with bolt body 1, and the note pipe 3 is plastic tube or steel pipe, and notes a diameter of 25mm of pipe 3, the note pipe 3
Through the left and right two ends of compressible high pressure plugging device 5, and note the anchoring that the left and right two ends of pipe 3 are separately positioned on bolt body 1
Section and non-anchored intersegmental part, are provided with steel strand wires 2, and steel strand wires 2 circumferentially uniformly insert compressible high pressure on the outside of the note pipe 3
In plugging device 5, the bolt body 1 is internally provided with the anti-sunken bracing frame 7 of the drag reduction for equidistantly distributing, and two adjacent groups drag reduction is anti-
The distance between sunken bracing frame 7 is 1.5-2m, and the steel strand wires 2 insert drag reduction to be prevented falling in the through hole of bracing frame 7.
Further, the steel strand wires 2 are be arranged in parallel with note pipe 3, and two groups of steel strand wires 2 are symmetrical with regard to the axis of note pipe 3
Distribution, the steel strand wires 2 are located on the outside of non-anchored section and are provided with non-anchored section sleeve pipe 6, the non-anchored section sleeve pipe 6 and anchor pole
Compressible high pressure plugging device air-inflating tube 8 is provided between body 1, and compressible high pressure plugging device air-inflating tube 8 is arranged on anchor pole sheet
In the non-anchored section of body 1.
Further, described compressible 8 one end of high pressure plugging device air-inflating tube is fixedly connected with compressible high pressure plugging device 5, can
8 other end of compression high pressure plugging device air-inflating tube is provided with air-inflating tube valve inside 9, is perfused with induration inside the bolt body 1
4, the induration 4 is cement mortar induration or cement mortar induration.
Present invention also offers a kind of grouting method of partition-type high pressure plug-hole grouted anchor bar, specifically includes following steps,
S1：Compressible high pressure plugging device is installed on into the non-anchored section and anchoring section intersection of anchor pole；
S2：By the string holes for not having steel strand with hole plug block, steel strand wires periphery, Grouting Pipe periphery with blocked with glass cement；
S3：The appropriate location that colligation good anchor pole steel strand wires are inserted in bolthole；
S4：Injection cement mortar (or cement mortar) for the first time suspends slip casting to anchor pole aperture, fills to compressible high pressure plugging device
Then gas, its blowing pressure to 1.5MPa fill into cement mortar (or cement mortar) by Grouting Pipe, and grouting pressure to 0.5～
1.5MPa（Adjusted according to the design buried depth and design requirement of anchor pole）, and 2～10min of duration clock（According to anchor pole soil layer rock
Depending on property）, closure Grouting Pipe maintenance, and carry out the protection to gas tube and Grouting Pipe closure；
S5：The inflation in compressible high pressure plugging device is bled off in anchor pole tensioning, the tensioning fixation of anchor pole is then carried out.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to,
Although being described in detail to the present invention with reference to the foregoing embodiments, for a person skilled in the art, which still may be used
To modify to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic,
All any modification, equivalent substitution and improvements within the spirit and principles in the present invention, made etc., should be included in the present invention's
Within protection domain.
Claims (6)
1. a kind of partition-type high pressure plug-hole grouted anchor bar, including bolt body（1）, it is characterised in that：The bolt body（1）For
Hollow circular-tube, the bolt body（1）It is internally provided with compressible high pressure plugging device（5）, the compressible high pressure plugging device（5）
By bolt body（1）It is divided into anchoring section and non-anchored section, the bolt body（1）Central authorities are provided with note pipe（3）, the note pipe
（3）With bolt body（1）It is arranged in parallel, the note pipe（3）Through compressible high pressure plugging device（5）Left and right two ends, and note pipe
（3）Left and right two ends be separately positioned on bolt body（1）Anchoring section and non-anchored intersegmental part, the note pipe（3）Outside is arranged
There are steel strand wires（2）, and steel strand wires（2）Compressible high pressure plugging device is uniformly inserted circumferentially（5）It is interior, the steel strand wires（2）It is located at
Non-anchored section sleeve pipe is provided with the outside of non-anchored section（6）, the non-anchored section sleeve pipe（6）With bolt body（1）Between arrange
There is compressible high pressure plugging device air-inflating tube（8）, and compressible high pressure plugging device air-inflating tube（8）It is arranged on bolt body（1）It is non-
In anchoring section, the compressible high pressure plugging device air-inflating tube（8）One end and compressible high pressure plugging device（5）It is fixedly connected, can presses
Contracting high pressure plugging device air-inflating tube（8）The other end is provided with air-inflating tube valve inside（9）, the bolt body（1）Inside is perfused with solid
Knot body（4）.
2. a kind of partition-type high pressure plug-hole grouted anchor bar according to claim 1, it is characterised in that：The bolt body
（1）It is internally provided with the anti-sunken bracing frame of the drag reduction for equidistantly distributing（7）, and the anti-sunken bracing frame of two adjacent groups drag reduction（7）Between
Distance be 1.5-2m, the steel strand wires（2）Steel strand wires（2）The anti-sunken bracing frame of insertion drag reduction（7）Through hole in.
3. a kind of partition-type high pressure plug-hole grouted anchor bar according to claim 1, it is characterised in that：The steel strand wires（2）
With note pipe（3）It is arranged in parallel, and two groups of steel strand wires（2）With regard to note pipe（3）Axis it is symmetrical.
4. a kind of partition-type high pressure plug-hole grouted anchor bar according to claim 1, it is characterised in that：The note pipe（3）For
Plastic tube or steel pipe, and note pipe（3）A diameter of 25mm.
5. a kind of partition-type high pressure plug-hole grouted anchor bar according to claim 1, it is characterised in that：The induration（4）
For cement mortar induration or cement mortar induration.
6. the grouting method of the partition-type high pressure plug-hole grouted anchor bar described in a kind of claim 1, it is characterised in that：Specifically include
Following steps,
S1：Compressible high pressure plugging device is installed on into the non-anchored section and anchoring section intersection of anchor pole；
S2：By the string holes for not having steel strand with hole plug block, steel strand wires periphery, Grouting Pipe periphery with blocked with glass cement；
S3：The appropriate location that colligation good anchor pole steel strand wires are inserted in bolthole；
S4：Injection cement mortar (or cement mortar) for the first time suspends slip casting to anchor pole aperture, fills to compressible high pressure plugging device
Then gas, its blowing pressure to 1.5MPa fill into cement mortar by Grouting Pipe, grouting pressure to 0.5～1.5MPa, and continue when
Between 2～10min clocks, closure Grouting Pipe maintenance, and carry out to gas tube and Grouting Pipe closure protection；
S5：The inflation in compressible high pressure plugging device is bled off in anchor pole tensioning, the tensioning fixation of anchor pole is then carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710002322.3A CN106522220A (en) | 2017-01-03 | 2017-01-03 | Partitioned high-pressure hole blockage grouting anchor rod and grouting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710002322.3A CN106522220A (en) | 2017-01-03 | 2017-01-03 | Partitioned high-pressure hole blockage grouting anchor rod and grouting method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106522220A true CN106522220A (en) | 2017-03-22 |
Family
ID=58336622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710002322.3A Pending CN106522220A (en) | 2017-01-03 | 2017-01-03 | Partitioned high-pressure hole blockage grouting anchor rod and grouting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106522220A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677944A (en) * | 2018-06-29 | 2018-10-19 | 北京矿务局综合地质工程公司 | Partition-type high pressure plug-hole grouted anchor bar and its grouting method |
| CN108824427A (en) * | 2018-06-29 | 2018-11-16 | 重庆交通大学 | Bolt anchorage set construction |
| CN110608062A (en) * | 2019-10-09 | 2019-12-24 | 中国矿业大学 | Multi-section hollow grouting anchor cable and supporting method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100797818B1 (en) * | 2007-07-09 | 2008-02-01 | (주)서림건설 | Fixing device of removal rock-bolt |
| CN101798812A (en) * | 2010-04-19 | 2010-08-11 | 北京科技大学 | Double anchoring section prestressed anchoring system with three-layer protection and anchoring method thereof |
| CN201627200U (en) * | 2009-12-29 | 2010-11-10 | 青岛建设集团零零一工程有限公司 | Blockage-slurry strengthening earth anchor |
| CN103147440A (en) * | 2013-03-14 | 2013-06-12 | 黄河勘测规划设计有限公司 | Construction method of prestressed anchor cable |
| CN205712093U (en) * | 2016-02-06 | 2016-11-23 | 北京市勘察设计研究院有限公司 | A kind of air bag plugging device carrying out grouting under pressure to soil nailing and anchor pole |
| CN206346194U (en) * | 2017-01-03 | 2017-07-21 | 北京航勘建设有限公司 | A kind of partition-type high pressure plug-hole grouted anchor bar |
-
2017
- 2017-01-03 CN CN201710002322.3A patent/CN106522220A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100797818B1 (en) * | 2007-07-09 | 2008-02-01 | (주)서림건설 | Fixing device of removal rock-bolt |
| CN201627200U (en) * | 2009-12-29 | 2010-11-10 | 青岛建设集团零零一工程有限公司 | Blockage-slurry strengthening earth anchor |
| CN101798812A (en) * | 2010-04-19 | 2010-08-11 | 北京科技大学 | Double anchoring section prestressed anchoring system with three-layer protection and anchoring method thereof |
| CN103147440A (en) * | 2013-03-14 | 2013-06-12 | 黄河勘测规划设计有限公司 | Construction method of prestressed anchor cable |
| CN205712093U (en) * | 2016-02-06 | 2016-11-23 | 北京市勘察设计研究院有限公司 | A kind of air bag plugging device carrying out grouting under pressure to soil nailing and anchor pole |
| CN206346194U (en) * | 2017-01-03 | 2017-07-21 | 北京航勘建设有限公司 | A kind of partition-type high pressure plug-hole grouted anchor bar |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677944A (en) * | 2018-06-29 | 2018-10-19 | 北京矿务局综合地质工程公司 | Partition-type high pressure plug-hole grouted anchor bar and its grouting method |
| CN108824427A (en) * | 2018-06-29 | 2018-11-16 | 重庆交通大学 | Bolt anchorage set construction |
| CN110608062A (en) * | 2019-10-09 | 2019-12-24 | 中国矿业大学 | Multi-section hollow grouting anchor cable and supporting method |
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| C06 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170322 |
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| RJ01 | Rejection of invention patent application after publication |