CN104612730A - Large-deformation self-adaptation anchor rod - Google Patents
Large-deformation self-adaptation anchor rod Download PDFInfo
- Publication number
- CN104612730A CN104612730A CN201410749820.0A CN201410749820A CN104612730A CN 104612730 A CN104612730 A CN 104612730A CN 201410749820 A CN201410749820 A CN 201410749820A CN 104612730 A CN104612730 A CN 104612730A
- Authority
- CN
- China
- Prior art keywords
- anchor pole
- strength spring
- anchor rod
- foot piece
- nut
- 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
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Classifications
-
- 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
- E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube
-
- 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
- E21D21/004—Bolts held in the borehole by friction all along their length, without additional fixing means
Abstract
The invention discloses a large-deformation self-adaptation anchor rod. The large-deformation self-adaptation anchor rod comprises an anchor rod body (6) and is characterized in that the end of the anchor rod body (6) is fixedly provided with a high-strength spring (5) horizontally and straightly, the other end of the high-strength spring (5) is fixedly provided with a tail rod (1) horizontally and straightly, the high-strength spring (5) is sleeved with a sleeve tube (4), a rubber ring sealing cover (7) is arranged in an end opening, near the anchor rod body (6), of the sleeve tube, a steel plate tray (3) and a nut (2) are arranged at an end of the tail rod (1), and the nut (2) presses the steel plate tray (3) tightly on a surrounding rock wall. The large-deformation self-adaptation anchor rod has the advantages of being adaptable to large deformation of surrounding rocks, and playing a role in effectively buffering and treating sudden disasters such as tunnel rockburst and coal mine impact ground pressure.
Description
Technical field
The invention belongs to tunnel and tunnel disaster prevention facility, be specifically related to a kind of large deformation self adaptation anchor pole.
Background technology
Current, the degree of depth of exploit mineral resources constantly increases, and the degree of depth as the exploitation of Zhang little Lou ore deposit, Xuzhou has reached 1300 meters.The security development of the underground deep energy and mineral resources is related to the significant problem of national sustained economic development and national energy strategic security.In addition, in order to solve the problem of traffic of mountain area difficulty, the tunnel of construction highway, railway is increasing.Therefore, in the process of engineering construction, the engineering roadblock in increasing deep tunnel and tunnel can be run into.
Along with a large amount of construction of the mining continuous increase of the degree of depth and buried highway, railway tunnel, surrounding rock of chamber usually shows the feature of large deformation under the condition of high-ground stress, is embodied in soft rock large deformation, large deformation etc. that rock burst large deformation, Gas Outburst large deformation, bump cause.In road and rail tunnel, colliery tunnel support, anchor pole is most widely used, that consumption is maximum supporting and protection structure.But existing anchor pole to have elongation per unit length low, the shortcoming of roadway surrounding rock large deformation can not be adapted to.When there is moderate finite deformation in country rock, because initial deformation is larger, roadway surrounding rock deform more than the scope that anchor pole can bear, the adhesion stress between anchor pole and injecting cement paste and frictional force is caused significantly to reduce, even disappear, finally cause the supporting and protection structure such as anchor pole to lose efficacy, and then cause fall of ground, the landslide even engineering accident such as large-scale rock burst.In addition, when there is earthquake, the country rock in tunnel or tunnel can produce strenuous exercise, and the relative displacement between country rock and anchor pole is comparatively large, thus makes the frictional force between country rock and anchor pole weaken further or disappear, and anchor pole can not keep normal safeguard function.
Anchor pole in current tunnel and construction of tunnel normally cannot work when country rock produces large deformation.During as run into the situation such as rock burst or bump, paroxysmal accident can be produced.
Summary of the invention
For prior art Problems existing, technical problem to be solved by this invention is just to provide a kind of large deformation self adaptation anchor pole, and it can realize the situation that large deformation may occur Deep Roadway and tunnel, provides one bolt support safely and effectively.
Technical problem to be solved by this invention is realized by such technical scheme, it includes anchor pole, anchor pole end is straight is fixed with high-strength spring, the other end of high-strength spring is straight is fixed with foot piece, high-strength spring be peripherally equipped with sleeve pipe, in the sleeve port of anchor pole, be provided with elastic tape capping, in the end of foot piece with steel plate pallet and nut, nut is pushed down steel plate pallet and is close to country rock wall.
The present invention, can the large deformation of self adaptation country rock by anchor pole being fixed the expansion performance of high-strength spring, and burst fire-disaster is played to the effect of buffering.In addition, under seismic loading, during the country rock strenuous exercise in tunnel or tunnel, anchor pole of the present invention is followed country rock and is moved with country rock within the specific limits, decrease the weakening of frictional force between country rock and anchor pole or disappear, anchor pole is worked on, and good damping effect can be played.
Owing to have employed technique scheme, the present invention has following advantage: anchor pole can the large deformation that produces of self adaptation country rock, can play effective buffering and governance role to burst fire-disasters such as tunnel rock burst, coal mine rock bursts.
Accompanying drawing explanation
Accompanying drawing of the present invention is described as follows:
Fig. 1 is structural representation of the present invention.
In figure: 1. foot piece; 2. nut; 3. steel plate pallet; 4. sleeve pipe; 5. high-strength spring; 6. anchor pole; 7. elastic tape capping.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described:
As shown in Figure 1, the present invention includes anchor pole 6, anchor pole 6 end is straight is fixed with high-strength spring 5, the other end of high-strength spring 5 is straight is fixed with foot piece 1, high-strength spring 5 be peripherally equipped with sleeve pipe 4, in the sleeve port of anchor pole 6, be provided with elastic tape capping 7, in the end of foot piece 1 with steel plate pallet 3 and nut 2, nut 2 is pushed down steel plate pallet 3 and is close to country rock wall.
When anchor pole of the present invention is installed, should first adjusting nut 2, make high-strength spring 5 of the present invention be in tension state.When country rock is without large deformation, the present invention is consistent with the operating principle of conventional anchor, and namely rely on the bonding force between anchor pole 6 and grouting body and frictional force, high-strength spring 5 plays the effect of transmitting pulling force.
When country rock produces large deformation, as strong rock burst etc., steel plate pallet 3 is subject to country rock extrapolability and is greater than friction of rest power between anchor pole of the present invention and country rock, and high-strength spring 5 produces stretcher strain, with the distortion of suitable for surrounding rock.According to the design formulas of spring tension
, wherein
for the pulling force that spring produces,
for spring rate,
for the length of spring elongation, therefore the value of thrust of spring is directly proportional to the length of spring elongates.When country rock generation large deformation, make high-strength spring 5 stretch quantitative change greatly, high-strength spring 5 produces larger pulling force effect.Therefore, anchor pole of the present invention can not only the large deformation of suitable for surrounding rock, and can produce larger pulling force to retrain surrouding rock deformation.
Under the pulling force effect that high-strength spring 5 produces, the trend that country rock has distortion to restore.High-strength spring 5 amount of tension diminishes, anchor pole of the present invention also can suitable for surrounding rock recovery distortion.
Sleeve pipe 4 passes through and is enclosed within high-strength spring 5 periphery, and sleeve pipe 4 is open at the port near foot piece 1, for high-strength spring 5 free-extension; Sleeve pipe 4 is semi-enclosed near the port of anchor pole 6, and is provided with high-strength spring 5 is disturbed in elastic tape capping 7 normal work to stop injecting cement paste to enter sleeve pipe 4, and sleeve pipe 4 length is 0.5 ~ 1.0 meter.
The structure that anchor pole 6 is fixedly connected with high-strength spring 5 with the end of foot piece 1 is, the conical head of anchor pole 6 and foot piece 1 end inserts in the turn of high-strength spring 5, the body of rod of anchor pole 6 and foot piece 1 is drilled with through hole, the reserved end of steel wire of high-strength spring 5 end inserts in body of rod through hole, through the steel wire winding of through hole on the body of rod, the metallic object after fusing is filled up in body of rod through hole gap.The spring that described high-strength spring 5 can select high strength steel qin line or SUS304, SUS305 high-strength stainless wire to make.
Claims (2)
1. a large deformation self adaptation anchor pole, include anchor pole (6), it is characterized in that: anchor pole (6) end is straight is fixed with high-strength spring (5), the other end of high-strength spring (5) is straight is fixed with foot piece (1), high-strength spring (5) be peripherally equipped with sleeve pipe (4), in the sleeve port of anchor pole (6), be provided with elastic tape capping (7), in the end of foot piece (1) with steel plate pallet (3) and nut (2), nut (2) is pushed down steel plate pallet (3) and is close to country rock wall.
2. a kind of large deformation self adaptation anchor pole according to claim 1, it is characterized in that: the structure that anchor pole (6) is fixedly connected with high-strength spring (5) with the end of foot piece (1) is, the conical head of anchor pole (6) and foot piece (1) end inserts in the turn of high-strength spring (5), the body of rod of anchor pole (6) and foot piece (1) is drilled with through hole, the reserved end of steel wire of high-strength spring (5) end inserts in body of rod through hole, through the steel wire winding of through hole on the body of rod, between body of rod through hole space, fill up the metallic object after fusing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410749820.0A CN104612730A (en) | 2014-12-10 | 2014-12-10 | Large-deformation self-adaptation anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410749820.0A CN104612730A (en) | 2014-12-10 | 2014-12-10 | Large-deformation self-adaptation anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104612730A true CN104612730A (en) | 2015-05-13 |
Family
ID=53147355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410749820.0A Pending CN104612730A (en) | 2014-12-10 | 2014-12-10 | Large-deformation self-adaptation anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104612730A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317452A (en) * | 2015-12-07 | 2016-02-10 | 山东科技大学 | Resistance-increasing yielding large-deformation anchor rod and construction method thereof |
| CN105736023A (en) * | 2016-02-02 | 2016-07-06 | 重庆大学 | Large-deformation energy-absorption anchor rod |
| CN105736024A (en) * | 2016-02-02 | 2016-07-06 | 重庆大学 | Self-adaptive energy-absorption anchor rod |
| CN105863697A (en) * | 2016-05-18 | 2016-08-17 | 重庆大学 | Tensile break resistant energy-absorbing anchor rod |
| CN108412526A (en) * | 2018-05-14 | 2018-08-17 | 重庆大学 | A kind of adaptive hierarchical early warning anchor pole |
| CN109555120A (en) * | 2018-12-05 | 2019-04-02 | 中铁二院工程集团有限责任公司 | A kind of prestressing force shock-resistant and energy-dissipating anchor pole |
| CN112610257A (en) * | 2020-12-03 | 2021-04-06 | 北京科技大学 | Impact roadway porous steel laminated resistance-increasing deformation energy absorption device and method |
| CN113294187A (en) * | 2021-05-24 | 2021-08-24 | 上海应用技术大学 | Telescopic anchor rod and construction method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202431287U (en) * | 2011-12-12 | 2012-09-12 | 中国矿业大学 | Combined telescopic anchor rod |
| CN203223237U (en) * | 2013-04-27 | 2013-10-02 | 江杰 | Novel two-way deformable anchor rod |
| CN103422873A (en) * | 2013-08-16 | 2013-12-04 | 中铁二十一局集团有限公司 | Strong-strength extendable anchor rod |
| CN203867596U (en) * | 2014-01-13 | 2014-10-08 | 申圳 | Spring-type anchor rod |
-
2014
- 2014-12-10 CN CN201410749820.0A patent/CN104612730A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202431287U (en) * | 2011-12-12 | 2012-09-12 | 中国矿业大学 | Combined telescopic anchor rod |
| CN203223237U (en) * | 2013-04-27 | 2013-10-02 | 江杰 | Novel two-way deformable anchor rod |
| CN103422873A (en) * | 2013-08-16 | 2013-12-04 | 中铁二十一局集团有限公司 | Strong-strength extendable anchor rod |
| CN203867596U (en) * | 2014-01-13 | 2014-10-08 | 申圳 | Spring-type anchor rod |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317452A (en) * | 2015-12-07 | 2016-02-10 | 山东科技大学 | Resistance-increasing yielding large-deformation anchor rod and construction method thereof |
| CN105736023A (en) * | 2016-02-02 | 2016-07-06 | 重庆大学 | Large-deformation energy-absorption anchor rod |
| CN105736024A (en) * | 2016-02-02 | 2016-07-06 | 重庆大学 | Self-adaptive energy-absorption anchor rod |
| CN105863697A (en) * | 2016-05-18 | 2016-08-17 | 重庆大学 | Tensile break resistant energy-absorbing anchor rod |
| CN108412526A (en) * | 2018-05-14 | 2018-08-17 | 重庆大学 | A kind of adaptive hierarchical early warning anchor pole |
| CN108412526B (en) * | 2018-05-14 | 2023-12-15 | 重庆大学 | Self-adaptive hierarchical early warning anchor rod |
| CN109555120A (en) * | 2018-12-05 | 2019-04-02 | 中铁二院工程集团有限责任公司 | A kind of prestressing force shock-resistant and energy-dissipating anchor pole |
| CN112610257A (en) * | 2020-12-03 | 2021-04-06 | 北京科技大学 | Impact roadway porous steel laminated resistance-increasing deformation energy absorption device and method |
| CN113294187A (en) * | 2021-05-24 | 2021-08-24 | 上海应用技术大学 | Telescopic anchor rod and construction method thereof |
| CN113294187B (en) * | 2021-05-24 | 2023-08-04 | 上海应用技术大学 | Telescopic anchor rod and construction method thereof |
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Application publication date: 20150513 |