CN201396179Y - Back-resistant self-grout stopping grouting anchor - Google Patents
Back-resistant self-grout stopping grouting anchor Download PDFInfo
- Publication number
- CN201396179Y CN201396179Y CN2009200416933U CN200920041693U CN201396179Y CN 201396179 Y CN201396179 Y CN 201396179Y CN 2009200416933 U CN2009200416933 U CN 2009200416933U CN 200920041693 U CN200920041693 U CN 200920041693U CN 201396179 Y CN201396179 Y CN 201396179Y
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- CN
- China
- Prior art keywords
- anchor
- grouting
- bar
- rod body
- resistant self
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a back-resistant self-grout stopping grouting anchor, which comprises an anchor body and grouting holes arranged on the anchor body; the anchor body is prepared by a PVC plastic pipe; the head of the anchor body is fixedly provided with a plurality of rows of agnails and the back part thereof is provided with a flexible gland cover. The grouting anchor not only can be applicable to excellent terrane, but also can be applicable to large-deformed laneways with weak and cracked terrane conditions, not only can guarantee plump grouting, but also can lead the protectionlayer of the anchor to be uniform; the back-resistant self-grout stopping grouting anchor has a simple structure, good hole-sealing and shotcreting effects, does not increase the cost, is convenient to be constructed, has a low cost, not only can meet needed strength, but also is convenient to be cut, and can prevent the anchor from being back, and has broad practicability.
Description
Technical field
The utility model relates to a kind of grouted anchor bar, and especially a kind of anti-back bar of reparation, tunnel reinforcing and the highway slope protection of breaking surrounding rock roadway with large deformation chamber that is applicable to is only starched grouted anchor bar certainly.
Background technology
Grouted anchor bar has been widely used in mine, traffic infrastructure because it is simple in structure, easy to use.And to the research of the grouted anchor bar also history of existing more than ten years, numerous for over ten years experts, scholar, engineers and technicians have done a large amount of fruitful work for practicality and the economy of exploring grouted anchor bar.The gas that produces during at slip casting is to the influence of grouting pressure, and the patent No. is 200520033862.0 to disclose a kind of anti-cheat gas hollow grouting anchor; Go deep into fragmented rock body easily at anchor pole, the patent No. is 95202848.4 to disclose a kind of drilling type grouted anchor bar, the patent No. be 02265041.5 disclose a kind of focus slurry and anchor pole in one from the anchor bolt grouting anchor pole.Though these several anchor poles have all been obtained good effect, but all exist the cost height, construction is complicated, difficulty is big, can not effectively solve the problem of moving back bar phenomenon and spillage sealing of hole of grouted anchor bar in the slip casting process, especially be difficult for satisfying and to satisfy desirable strength in the reparation of breaking surrounding rock roadway with large deformation chamber and be convenient to the cutting problem again.About the general 2m of metal grouted anchor bar, brushing after the roadway with large deformation slip casting, grouted anchor bar is most exposed, and loses anchoring effect, difficult treatment.
Summary of the invention
The purpose of this utility model is the weak point that will overcome in the prior art, provides a kind of simple in structure, and easy construction is cheap, can satisfy desirable strength and be convenient to the anti-back bar that is cut again from only starching grouted anchor bar.
For achieving the above object, grouted anchor bar of the present utility model comprises anchor rod body and the injected hole that is located on the anchor rod body, and described anchor rod body is that pvc tube is made, the head of anchor rod body is fixed with many row's hangnails, and its rear portion is provided with flexible gland.
Described many row's hangnails are cross, and to arrange the above the flexible gland of excircle that is symmetrically fixed on anchor pole be the cavernous body sealing shroud.
Beneficial effect: compared with the prior art, the pvc tube anchor pole of employing helps brushing after roadway with large deformation slip casting, easily by cross cut saw; The cavernous body sealing shroud can effectively prevent spillage in the slip casting process, plays good sealing function, helps injection hole sealing; Hangnail can stop anchor pole to be subjected to the bar that moves back that the grouting pressure effect causes, effectively improves slip casting effect, has guaranteed grouting quality.This grouted anchor bar is 3～4h after the slip casting initial set, and pulling capacity is greater than 30KN; Use with roadway with large deformation rock crusher scope big, general 2～5,6m and do not wait, the drift section convergence diminishes relatively, and the polyvinyl chloride grouted anchor bar of employing can grow to 4m, and range of grouting is big; Suitable crooked installation of light section; The anti-back bar that is applicable to reparation, tunnel reinforcing and the highway slope protection of breaking surrounding rock roadway with large deformation chamber is only starched grouted anchor bar certainly.It is simple in structure, and easy construction is cheap, can satisfy desirable strength, be convenient to again be cut, and energy anti-back bar, have practicality widely.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
1-anchor tail screw thread, 2-anchor rod body, 3-cavernous body sealing shroud, 4-hangnail, 5-injected hole.
The specific embodiment
The utility model will be further described below in conjunction with the embodiment in the accompanying drawing:
Anti-back bar of the present utility model is from the grouted anchor bar that ends slurry, anchor rod body 2 is made for pvc tube, interleaved on the body of anchor rod body 2 have a plurality of injected holes 5, the afterbody of anchor rod body 2 has and connects or the fixing anchor tail screw thread 1 of usefulness, the head threads of anchor rod body 2 is fixed with three row's hangnails 4, three row hangnails 4 and is cross and arranges and be symmetrically fixed on the excircle of anchor pole; The rear portion of anchor rod body 2 is provided with flexible gland 3, and flexible gland 3 is the cavernous body sealing shroud.
Claims (3)
1. an anti-back bar is from the grouted anchor bar that ends slurry, comprise anchor rod body (2) and be located at injected hole (5) on the anchor rod body (2), it is characterized in that: described anchor rod body (2) is made for pvc tube, the head of anchor rod body (2) is fixed with many row's hangnails (4), and its rear portion is provided with flexible gland (3).
2. anti-back bar according to claim 1 ends the grouted anchor bar of slurry certainly, it is characterized in that: described many row's hangnails (4) are the cross arrangement and are symmetrically fixed on the excircle of anchor pole.
3. anti-back bar according to claim 1 is from the grouted anchor bar that ends slurry, and it is characterized in that: described flexible gland (3) is the cavernous body sealing shroud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200416933U CN201396179Y (en) | 2009-03-31 | 2009-03-31 | Back-resistant self-grout stopping grouting anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200416933U CN201396179Y (en) | 2009-03-31 | 2009-03-31 | Back-resistant self-grout stopping grouting anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201396179Y true CN201396179Y (en) | 2010-02-03 |
Family
ID=41618688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200416933U Expired - Fee Related CN201396179Y (en) | 2009-03-31 | 2009-03-31 | Back-resistant self-grout stopping grouting anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201396179Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640159A (en) * | 2016-10-31 | 2017-05-10 | 洛阳中岩工程材料有限公司 | Connecting sleeve sealing structure for self-drilling type hollow grouting anchors |
| CN107313794A (en) * | 2017-07-10 | 2017-11-03 | 太原理工大学 | A kind of shell extrusion friction anchor pole that rises for roadway support |
| CN108518236A (en) * | 2018-04-11 | 2018-09-11 | 郭士松 | A kind of Support System in Soft Rock Tunnels face advance core consolidation grouting anchor pole material |
| CN109083668A (en) * | 2018-08-20 | 2018-12-25 | 中钢集团马鞍山矿山研究院有限公司 | A kind of grouting and reinforcing anchor pole suitable for high stress breaking surrounding rock supporting |
| CN109487754A (en) * | 2018-11-23 | 2019-03-19 | 陈亮 | A kind of river channel ecology protective slope structure |
-
2009
- 2009-03-31 CN CN2009200416933U patent/CN201396179Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640159A (en) * | 2016-10-31 | 2017-05-10 | 洛阳中岩工程材料有限公司 | Connecting sleeve sealing structure for self-drilling type hollow grouting anchors |
| CN107313794A (en) * | 2017-07-10 | 2017-11-03 | 太原理工大学 | A kind of shell extrusion friction anchor pole that rises for roadway support |
| CN108518236A (en) * | 2018-04-11 | 2018-09-11 | 郭士松 | A kind of Support System in Soft Rock Tunnels face advance core consolidation grouting anchor pole material |
| CN109083668A (en) * | 2018-08-20 | 2018-12-25 | 中钢集团马鞍山矿山研究院有限公司 | A kind of grouting and reinforcing anchor pole suitable for high stress breaking surrounding rock supporting |
| CN109083668B (en) * | 2018-08-20 | 2020-05-19 | 中钢集团马鞍山矿山研究院有限公司 | Be suitable for slip casting reinforcing stock of high stress broken country rock support usefulness |
| CN109487754A (en) * | 2018-11-23 | 2019-03-19 | 陈亮 | A kind of river channel ecology protective slope structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100203 Termination date: 20120331 |