CN203271787U - Improved high pre-stressed anchor cable steel strand structure - Google Patents
Improved high pre-stressed anchor cable steel strand structure Download PDFInfo
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- CN203271787U CN203271787U CN 201320242455 CN201320242455U CN203271787U CN 203271787 U CN203271787 U CN 203271787U CN 201320242455 CN201320242455 CN 201320242455 CN 201320242455 U CN201320242455 U CN 201320242455U CN 203271787 U CN203271787 U CN 203271787U
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- steel strand
- anchor wire
- anchor cable
- roadway
- high pre
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Abstract
The utility model relates to an improved high pre-stressed anchor cable steel strand structure which comprises a steel strand and a drilling, wherein the steel strand is inserted in the drilling; 3 to 5 bird nest shaped bulges are arranged on the steel strand close to the top of an anchor wire. The structure has the characteristics that the bird nest shaped bulge parts can ensure the anchor wire steel strand to be centered in the drilling, enhances the drawing force of the anchor wire, has a function of uniformly stirring the resin, can enhance the drawing force of the anchor wire, and are hollow; the resin can be filled in the bulge parts during the stirring process, the resin and the steel strand of the anchor wire are enabled to be a whole, and the drawing force of the anchor wire is further increased; when the roadway country rock is loosed or crushed, the high pre-stressed force is easy to be applied when the anchor wire is mounted, and the deformation effect of the control of the roadway country rock cam be improved; the anchor wire is not easy to have roof collapse phenomenon, the happening of the roof collapse accident or the deviation phenomenon of the roadway is reduced, and the safety and the reliability of the roadway supporting are enhanced.
Description
Technical field
The utility model relates to the colliery tunnel support Material Field, specifically a kind of improved high pre-stress anchor cable strand structure.
Background technology
As everyone knows, coal road generally all adopts bolt support, and for better deformation controlling for rock surrounding gateways, after bolt support is adopted in the tunnel, the recycling anchor cable adds strong supporting.Comparatively during loose crushing, especially comparatively broken after goaf side coal column pressurized when roadway surrounding rock, when being installed, anchor cable is difficult to apply high pretightning force, and cause anchor cable can not play effective control deformation of the surrounding rock in tunnel purpose, reduce it and controlled the deformation of the surrounding rock in tunnel effect; And anchor cable is easily taken out and is emitted phenomenon, causes the fall of ground accident or partially helps the generation of phenomenon, has major safety risks.
Summary of the invention
The purpose of this utility model is the deficiency that exists in order to solve traditional anchor cable strand structure, a kind of improved high pre-stress anchor cable strand structure is provided, it strengthens the applicable ability of anchor cable, makes the more broken roadway with large deformation of its suitable for surrounding rock, improves and controls the deformation of the surrounding rock in tunnel effect.
The utility model is to adopt following technical scheme to realize: a kind of improved high pre-stress anchor cable strand structure, comprise steel strand (2) and boring (3), steel strand (2) insert in boring (3), the upper cage be provided with 3～5 bird-nest-shapeds near the anchor cable top of steel strand (2) plays (1), the cage of bird-nest-shaped plays the diameter of (1) than the little 2～3mm of boring (3) diameter, and the spacing distance that the cage of bird-nest-shaped rises between (1) is 40～50cm.
The utility model has overcome the deficiency of anchor cable strand structure by improving traditional anchor cable strand structure.After improving, anchor cable has following characteristics: the cage of nest shape plays part can guarantee anchor cable steel strand centering in boring, increases the pulling capacity of anchor cable; The cage of nest shape plays part can play the uniform stirring resin, also can increase the pulling capacity of anchor cable; It is hollow that the cage of nest shape plays part, can be full of wherein in the resin agitating process, makes the steel strand of resin and anchor cable become as a whole, has further increased the pulling capacity of anchor cable; Comparatively during loose crushing, be easy to apply high pretightning force when anchor cable is installed when roadway surrounding rock, improve it and control the deformation of the surrounding rock in tunnel effect; Anchor cable should not be taken out and emit phenomenon, reduces the fall of ground accident or partially helps the generation of phenomenon, has improved the roadway support security reliability.Can be widely used in coal roadway rock controls.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is that the cage of bird-nest-shaped plays (1) structure for amplifying schematic diagram.
The specific embodiment
A kind of improved high pre-stress anchor cable strand structure comprises that the cage of bird-nest-shaped plays 1, steel strand 2, boring 3, roadway surrounding rock surface 4, channel-section steel 5, billet 6, lockset 7, steel strand 2 insert in boring 3, play 1 at the cage that is provided with 3～5 bird-nest-shapeds near the anchor cable top on steel strand 2, the cage of bird-nest-shaped plays 1 diameter than the boring 3 little 2～3mm of diameter; The spacing distance that the cage of bird-nest-shaped rises between 1 is 40～50cm.Between Ground Vehicle, adopt forming machine for mining nest anchor ropes machined steel twisted wire 2, and be transported to the down-hole.
After tunnelling, adopt jumbolter or special-purpose anchor cable rig to hole, after boring is completed, resin explosive roll is made a gift to someone in boring 3 successively, at the bottom of with steel strand 2, resin explosive roll being sent into the hole, with stirring connector, steel strand 2 and rig are coupled together, start rig, advance while stirring, stirred 20～30 seconds, the rig that do not fall stops boring, and waits for 2～3 minutes and falls rig, unloads lower connector; The resin explosive roll maintenance was installed channel-section steel 5, billet 6 and locksets 7 at surperficial 4 one ends of the roadway surrounding rock of steel strand 2 after 30 minutes, make them be close to roadway surrounding rock surface 4, hang up stretch-draw jack and carry out stretch-draw, when reaching the design pretightning force, stop stretch-draw and unload jack.
Claims (1)
1. improved high pre-stress anchor cable strand structure, comprise steel strand (2) and boring (3), it is characterized in that: steel strand (2) insert in boring (3), steel strand (2) are upper plays (1) being provided with 3～5 cages near the anchor cable top, cage plays the diameter of (1) than the little 2～3mm of boring (3) diameter, and the spacing distance that cage rises between (1) is 40～50cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320242455 CN203271787U (en) | 2013-05-07 | 2013-05-07 | Improved high pre-stressed anchor cable steel strand structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320242455 CN203271787U (en) | 2013-05-07 | 2013-05-07 | Improved high pre-stressed anchor cable steel strand structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203271787U true CN203271787U (en) | 2013-11-06 |
Family
ID=49502225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320242455 Expired - Fee Related CN203271787U (en) | 2013-05-07 | 2013-05-07 | Improved high pre-stressed anchor cable steel strand structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203271787U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533487A (en) * | 2014-12-08 | 2015-04-22 | 山东海天能源有限公司 | Yield rod for anchor rope |
| CN104727837A (en) * | 2014-11-27 | 2015-06-24 | 山东海天能源有限公司 | High-prestress large-ductility constant-resistance deformation yielding scour prevention anchor cable for mine reinforcing and working process thereof |
| CN107120129A (en) * | 2017-05-25 | 2017-09-01 | 中国矿业大学 | A kind of band tartar strengthens anchoring anchor cable and its application method |
-
2013
- 2013-05-07 CN CN 201320242455 patent/CN203271787U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727837A (en) * | 2014-11-27 | 2015-06-24 | 山东海天能源有限公司 | High-prestress large-ductility constant-resistance deformation yielding scour prevention anchor cable for mine reinforcing and working process thereof |
| CN104533487A (en) * | 2014-12-08 | 2015-04-22 | 山东海天能源有限公司 | Yield rod for anchor rope |
| CN107120129A (en) * | 2017-05-25 | 2017-09-01 | 中国矿业大学 | A kind of band tartar strengthens anchoring anchor cable and its application method |
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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: 20131106 Termination date: 20140507 |