CN208587175U - A kind of prestressed structure of prestressed anchor - Google Patents
A kind of prestressed structure of prestressed anchor Download PDFInfo
- Publication number
- CN208587175U CN208587175U CN201821295736.6U CN201821295736U CN208587175U CN 208587175 U CN208587175 U CN 208587175U CN 201821295736 U CN201821295736 U CN 201821295736U CN 208587175 U CN208587175 U CN 208587175U
- Authority
- CN
- China
- Prior art keywords
- prestressed
- anchor
- anchor pole
- fixing piece
- bolted
- 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.)
- Active
Links
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a kind of prestressed structures of prestressed anchor, including anchor pole, the top of the anchor pole is bolted with top fixinig plate, the circumference of the top fixinig plate is fixed at intervals with several prestress wires, the lower part of the anchor pole is bolted with lower fixing piece, the circumference interval of the lower fixing piece is bolted with bolt corresponding with prestress steel hank knotting number and being arranged from bottom to top, and the bolt is connected with the lower end of corresponding prestress wire.The prestressed structure of the prestressed anchor, structure is simple, has advantageously accounted for the construction safeties problems such as the wall caving, the roof fall that occur when tunneling in broken weathered rock formation.
Description
Technical field
The utility model relates to a kind of prestressed structures of prestressed anchor, apply suitable for support engineerings such as cave mouth, tunnels
Work field.
Background technique
During cave mouth is crushed belt construction, easily there is collapsing, inbreak；Construction safety environment is poor；Cave mouth supporting matter
Amount requires high, large carrying capacity.Currently used construction method is the method for grouting filling to handle crushed zone, and cost is high, effect
Fruit is poor, and speed of application is slow.And suspension roof support is as a kind of effective development heading support pattern, due to roadway surrounding rock intensity
Invigoration effect is remarkably improved the stability of country rock, in addition lower with support cost, fast at lane speed, labor intensity mitigation,
It improves drift section utilization rate, simplify that Ileal neobladder end service procedure, to be obviously improved operating environment and safety production condition etc. excellent
The economic benefit of mine can be improved in point, and use is more and more extensive, thus becomes a kind of main supporting of coal mining enterprise's mine laneway
Form represents the main direction of development of colliery tunnel support technology.But suspension roof support is used, the disadvantage is that it belongs to recessive branch
Shield, is not easy the monitoring and detection of supporting quality and reliability, it sometimes appear that the roof fall accident without obvious tendency, in addition, right
The very big soft rock of deflection, the biggish tunnel of plasticity stope drift active workings, supporting effect is not easy to guarantee, tunnel is caused not to be available.
Summary of the invention
The purpose of this utility model is to provide a kind of prestressed structures of prestressed anchor, and structure is simple, are conducive to auxiliary
The construction safeties such as wall caving, the roof fall for solving the problems, such as occur when tunneling in broken weathered rock formation are helped, anchor rod prestress is improved.
The technical solution of the utility model is: a kind of prestressed structure of prestressed anchor, including anchor pole, the anchor pole
Top be bolted with top fixinig plate, the circumference of the top fixinig plate is fixed at intervals with several prestress wires, described
The lower part of anchor pole is bolted with lower fixing piece, and the circumference interval of the lower fixing piece is bolted with and prestress steel hank knotting number phase
Bolt corresponding and being arranged from bottom to top, the bolt are connected with the lower end of corresponding prestress wire.
Further, the number of the prestress wire is 3 and the laying of 120 ° of interval, the prestress wire
It is mutually welded with bolt lower end.
Further, the both sides of the top fixinig plate and lower fixing piece are separately provided for what Grouting Pipe passed through
Vertical through holes.
Further, the top fixinig plate is apart from 20 ~ 30cm at the top of anchor pole, and the lower fixing piece is apart from anchor pole bottom
30~50cm。
Compared with prior art, the utility model has the advantage that the prestressed structure of the prestressed anchor, structure
Simply, easy to operate, it is practical, advantageously account for the constructions such as the wall caving, the roof fall that occur when tunneling in broken weathered rock formation
Safety problem, supporting effect are good.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the B-B cross-sectional view of Fig. 1 of the utility model.
Specific embodiment
In order to make the above-mentioned features and advantages of the utility model more obvious and understandable, special embodiment below, and cooperate attached drawing,
It is described in detail below, but the utility model is not limited to this.
With reference to Fig. 1 and Fig. 2
A kind of prestressed structure of prestressed anchor, including anchor pole 10 are provided with resin anchor on the anchor head 11 of the anchor pole
Gu agent, the top of anchor pole is bolted with top fixinig plate 41, and the circumference of the top fixinig plate is fixed at intervals with several prestressing force
Steel strand wires 42, the lower part of the anchor pole are bolted with lower fixing piece 43, the circumference interval of the lower fixing piece be bolted with in advance
Stress steel wire number is corresponding and the bolt 44 that is arranged from bottom to top, the lower end of the bolt and corresponding prestress wire
It is connected.
In the present embodiment, the number of the prestress wire is 3 and the laying of 120 ° of interval, so as to slip casting in branch guard aperture
After concrete integral strength is greatly improved.The lower end of the prestress wire mutually welds (flash butt welding) with bolt, in advance
The upper end of prestress steel strand is mutually welded with top fixinig plate, integral with prestress steel hinge wire bonding.Before installation, the nut of bolt
It is contacted with gasket, three prestress wires are in relaxation state.When preparing installation anchor pole, anchor pole is placed on platform, is passed through
To backspin bolt, bolt is enabled to decline, drives three steel hinge silk elongations, rotation, steel hinge silk is in tight state, and provides pre- answer
Power, general structural initial pre stress are 30 the percent of drawing tension.
In the present embodiment, the both sides of the top fixinig plate and lower fixing piece are separately provided for Grouting Pipe and pass through
Vertical through holes 45, to install Grouting Pipe and then to carry out slip casting.
In the present embodiment, half warp of the top fixinig plate and lower fixing piece is about twice of anchor pole radius, and thickness is about
For 1mm to 3mm or so, so as to better fixing bolt, and then prestress wire is fixed.
In the present embodiment, the top fixinig plate is apart from 20 ~ 30cm at the top of anchor pole, and the lower fixing piece is apart from anchor pole bottom
30 ~ 50cm of portion.
In use, anchor pole is placed on workbench, fixing anchor bar, by torque spanner, on pivot bottom fixinig plate
Bolt is applied with suitable prestressing force so that bolt is mobile towards the direction far from lower fixing piece, by rockbolt installation into hole
In, it installs, so as to subsequent slip casting.
The above is only the preferred embodiment of the present invention, it is all done according to present utility model application the scope of the patents it is equal
Deng variation and modification, it should all belong to the covering scope of the utility model.
Claims (4)
1. a kind of prestressed structure of prestressed anchor, including anchor pole, which is characterized in that the top of the anchor pole is bolted with top
Fixinig plate, the circumference of the top fixinig plate are fixed at intervals with several prestress wires, and the lower part of the anchor pole is bolted with
Lower fixing piece, the circumference interval of the lower fixing piece are bolted with corresponding with prestress steel hank knotting number and set from bottom to top
The bolt set, the bolt are connected with the lower end of corresponding prestress wire.
2. a kind of prestressed structure of prestressed anchor according to claim 1, which is characterized in that the prestress steel twist
The number of line is 3 and the laying of 120 ° of interval, and the lower end of the prestress wire is mutually welded with bolt.
3. a kind of prestressed structure of prestressed anchor according to claim 1 or 2, which is characterized in that the top is solid
The both sides of stator and lower fixing piece are separately provided for the vertical through holes that Grouting Pipe passes through.
4. a kind of prestressed structure of prestressed anchor according to claim 1, which is characterized in that the top fixinig plate
Apart from 20 ~ 30cm at the top of anchor pole, the lower fixing piece is apart from 30 ~ 50cm of anchor pole bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821295736.6U CN208587175U (en) | 2018-08-13 | 2018-08-13 | A kind of prestressed structure of prestressed anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821295736.6U CN208587175U (en) | 2018-08-13 | 2018-08-13 | A kind of prestressed structure of prestressed anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208587175U true CN208587175U (en) | 2019-03-08 |
Family
ID=65543566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821295736.6U Active CN208587175U (en) | 2018-08-13 | 2018-08-13 | A kind of prestressed structure of prestressed anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208587175U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110925000A (en) * | 2019-11-25 | 2020-03-27 | 绍兴文理学院 | Multi-stage yielding large-deformation tray with prestress self-applying function and using method |
-
2018
- 2018-08-13 CN CN201821295736.6U patent/CN208587175U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110925000A (en) * | 2019-11-25 | 2020-03-27 | 绍兴文理学院 | Multi-stage yielding large-deformation tray with prestress self-applying function and using method |
| CN110925000B (en) * | 2019-11-25 | 2021-03-16 | 绍兴文理学院 | Multi-stage yielding large-deformation tray with prestress self-applying function and using method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20210087931A1 (en) | Grouting bolt-cable composite beam and supporting method for advanced support of fractured surrounding rock in deep coal mines | |
| CN205422813U (en) | Detachable filling and retaining wall | |
| CN103161480B (en) | Initiatively support the method for roadside packing gob side entry retaining | |
| CN102661169B (en) | Gob-side entry retaining method for anchor bolt network gangue bag wall body for coal mining without pillars | |
| CN109681248B (en) | Advanced support method for grouting anchor cable | |
| CN109098742B (en) | A kind of list anchor focuses the steel tendon and its method for protecting support of formula full length fastening | |
| CN105019924B (en) | Strong roof support pier column and method for protecting section coal pillar | |
| CN203742612U (en) | Rapid construction supporting system for deep coal mine roadway with weak and broken surrounding rock | |
| CN103758529A (en) | Coal mine gob-side entry retaining side supporting method | |
| CN205172609U (en) | Asymmetric supporting device in tunnel | |
| CN110529144A (en) | A kind of hybrid advanced support method of light section stope drift active workings | |
| CN109268027A (en) | A kind of tunnel apex angle curved surface country rock intensive control method | |
| CN203684234U (en) | Hoisting reserved-well supporting structure for track panel construction | |
| CN208587175U (en) | A kind of prestressed structure of prestressed anchor | |
| CN109838253B (en) | Large-circulation combined beam type temporary support roof control device and construction method thereof | |
| CN109958454A (en) | Stope drift active workings pucking control system and its control method | |
| CN105507929B (en) | A kind of method that repetition applies prestressed cable bolting | |
| CN202731942U (en) | Super-soft ultra-thick coal seam large section open-off cut support device | |
| CN103557007B (en) | Cross the construction method of geological anomaly zone soft-rock tunnel smashed to pieces | |
| CN206111215U (en) | Be used for big section weak surrounding rock tunnel construction supporting construction | |
| CN210660136U (en) | Soft thick coal seam working face tunnel advance canopy guard supporting construction | |
| CN109252881A (en) | Steel pipe cement mortar prestress anchorage cable and its method for protecting support | |
| CN112963186A (en) | Gob-side entry driving narrow coal pillar reinforcing and supporting method | |
| CN201982115U (en) | Roadway support device used for coal mine | |
| CN105649663B (en) | One kind, which has, to be repeated to apply prestressed cable bolting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |