CN207740025U - A kind of extending multistage pressure-relieving achor bar - Google Patents
A kind of extending multistage pressure-relieving achor bar Download PDFInfo
- Publication number
- CN207740025U CN207740025U CN201721603360.6U CN201721603360U CN207740025U CN 207740025 U CN207740025 U CN 207740025U CN 201721603360 U CN201721603360 U CN 201721603360U CN 207740025 U CN207740025 U CN 207740025U
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- China
- Prior art keywords
- rod
- deformation
- anchor
- depressor
- rubber
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Abstract
The utility model discloses a kind of extending multistage pressure-relieving achor bars, mainly including anchor bar body, the body of rod by depressor, deformation crush block, pallet, baffle, high-strength nut and anchor head；Anchor pole is bonded using overall length, and the adhesive layer that slow setting resin anchoring agent is formed is equipped between anchor bar body and the wall of a borehole；Deformation crush block is provided between pallet and baffle, deformation crush block is mainly made by water swelling rubber, and installs a soft shell for it；The body of rod is equipped with by depressor at the body of rod position close to anchor pole tail portion, and the body of rod is mainly made of rubber and high-strength spring by depressor, and arc connection type is used with body of rod coupling part；Wherein the body of rod is less than deformation crush block by the depressor distortional stress upper limit, and multistage may be implemented and allow pressure, therefore the utility model has good energy-absorbing by pressure energy power, can be under the conditions of country rock large deformation still with good support action to ensure stability of the roadway.
Description
Technical field
The utility model belongs to Anchor in Geotechnical Engineering supporting field, and in particular to a kind of extending multistage pressure-relieving achor bar.
Background technology
With the increase of construction depth, the country rock of deep tunnel and deep tunnel has wherein there are prodigious deformation energy
It is uncontrollable when part deformation, country rock energy should be made rationally to be discharged, give full play to self ability to bear of country rock,
And so that supporting construction is given full play to absorption and shift the function of energy.So in the supporting in deep roadway with large deformation or tunnel,
The support capacity of common supporting facility is relied solely on, it is difficult to control the drastic deformation of country rock, the energy-absorbing of supporting construction is by pressure energy power
It is very important.But allowing pressure that must be that control allows pressure, i.e. support system slowly allows pressure under certain supporting intensity, rather than
Freely allow pressure, and Support Resistance should gradually increase with surrouding rock deformation, finally surrouding rock deformation be made to be effectively controlled.
Down below in engineering support, anchor pole is the support apparatus that dosage is most, most widely used.It is continuous with mining depth
Deepen, the crustal stress suffered by roadway surrounding rock is also continuously increased, so the characteristics of roadway surrounding rock often appears as large deformation.But
The characteristics of elongation percentage of existing anchor pole is low, and Support Resistance cannot gradually enhance with bolt deformation, not adapt to large deformation of roadway.
When moderate finite deformation occurs in country rock, since anchor pole elongation percentage is low, the deflection in tunnel exceeds the range of anchor pole born, and will cause
Anchor pole breaks failure, or even causes the accidents such as fall of ground, landslide.
Such as：Chinese utility model patent CN205154207U discloses a kind of multistage pressure-relieving achor bar, by anchor pole end
Two layers of hydro-expansive rubber washer is arranged in portion, is separated with pallet between two layers of rubber, and the rubber close to country rock is directly tight with country rock
Patch.But rubber can not provide larger prestressing force, deformation is too fast without laterally fettering.
Chinese utility model patent CN105822331U discloses a kind of multistage pressure-relieving achor bar, which can occur in country rock
It is stretched when deformation and extends step by step, and hindered by increasing the shear resistance of bolt to provide increased work step by step to country rock
Power.But have gap between bolt, it is previous to be cut and be caused to impact to next so that next bolt more holds
Destructible, in addition the resistance of bolt can drastically decline between two bolts, and resistance is discontinuous, and energy-absorbing effect is poor.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of energy-absorbing and allows good extending more of pressure effect
Grade pressure-relieving achor bar.
The construction of the extending multistage pressure-relieving achor bar of this practicality is：By anchor bar body, the body of rod by depressor, deformation crush block, pallet,
Baffle, high-strength nut and anchor head composition, which is characterized in that the anchor pole is bonded using overall length, between anchor bar body and the wall of a borehole
The adhesive layer formed equipped with resin anchoring agent；The deformation crush block is arranged between pallet and baffle, mainly by absorbing water
Expanded rubber makes；The body of rod is positioned close to the position of body of rod tail end by depressor, mainly by rubber and high-strength groups of springs
At.
The body of rod is connect with the anchor bar body part close to anchor head side using arc by depressor, can be to avoid stress collection
The middle integral strength for increasing anchor bar body improves the tensile capacity of anchor pole, while can also absorb one when arc connects deformation
Divide energy.
The deformation crush block periphery is provided with the soft shell of steel belt making to improve lateral binding force simultaneously
It is provided with water filling micropore in steel belt side, internal spring forms a whole with rubber；Crush block is high when mounted
Strong nut compression, makes rubber swelling by side micropore water filling, applies certain prestressing force to anchor pole；In addition after surrouding rock deformation,
Deformation crush block is compressed again, is carried out energy-absorbing and is allowed pressure.
The installation and application of the extending multistage pressure-relieving achor bar of this practicality is：
(1) first then anchor pole is fitted into drilling by a small amount of binder injection hole bottom；
(2) after anchor head reaches predetermined depth, pallet, deformation crush block, baffle and high-strength are loaded onto successively in anchor pole end
Nut, turning high-strength nut makes soft shell be deformed into cydariform；
(3) after waiting until that anchor head reaches some strength with binder, by micropore water filling outside soft shell, make expanded rubber
Water swelling deforms, and applies certain prestressing force to anchor pole；
(4) after applying prestressing force, Anchor Agent is injected into bolthole by the injected hole of pallet both sides；
(5) anchor pole work when the body of rod deformed first by depressor, the body of rod by inside depressor high strong spring and rubber form
Whole to be compressed, body of rod elongation, energy-absorbing allows pressure；
(6) persistently increase with the anchor stress that continues to deform of country rock, deformation crush block is compressed, and the steady of country rock is maintained
It is fixed.
The advantages of this practicality extending multistage pressure-relieving achor bar is：
1, entire drilling is anchored using resin anchoring agent, anchoring effect is good, can effective deformation controlling for rock surrounding gateways；
2, the body of rod is connect with the body of rod close to anchor head part using arc by depressor, can reach the effect for avoiding stress concentration
Fruit, while arc connection deformation can also be such that the body of rod extends plays allowing the effect of pressure；
3, the body of rod by inside depressor high strong spring and rubber become an entirety, strengthen single high strong spring or rubber
The deformation drag of glue, while improving the stability in body of rod elongation process；
4, when surrouding rock deformation, anchor rod body deforms first by depressor allows pressure, the entirety that high strong spring and rubber form to be pressed
Contracting, body of rod elongation allow pressure, reach the body of rod after centainly allowing pressure amount and suffer restraints by depressor, can not deform；When stress continues to increase
Added-time deformation crush block, which starts deformation, allows pressure, allows pressure mode using multistage, makes pressure amount big and effect is good.
Description of the drawings
Fig. 1 is that the utility model anchor bar body implements structural schematic diagram
Fig. 2 is the 1-1 profiles of Fig. 1
Marginal data：1- anchor bar bodies；2- high-strength nuts；3- deforms crush block；4- pallets；5- baffles；6- resin anchoring agents；
7- high strong springs；The 8- bodies of rod are by depressor；9- rubber；10- anchor heads；31- steel belts；32- water swelling rubbers；41- slip castings
Hole；
Specific implementation mode
The utility model provides a kind of controllable formula that expands and increases resistance anchor pole, for make the purpose of this utility model, technical solution and
Effect is clearer, clear, and specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.
The extending multistage pressure-relieving achor bar of one kind as shown in Figure 1 is by anchor bar body 1, the body of rod by depressor 8, deformation crush block 3, support
Disk 4, baffle 5, high-strength nut 2 and anchor head 10 form, which is characterized in that the anchor pole is bonded using overall length, anchor bar body 1 and brill
The adhesive layer that resin anchoring agent 6 is formed is equipped between hole wall；The deformation crush block 3 is arranged between pallet 4 and baffle 5,
Mainly made by water swelling rubber 32；The body of rod is positioned close to the position of body of rod tail end by depressor 8, mainly by rubber
Glue 8 and high strong spring 7 form.
The body of rod is connect with 1 coupling part of anchor bar body close to anchor head 10 using arc by depressor 8, can be to avoid answering
Power concentrates the integral strength for increasing anchor bar body 1, improves the tensile capacity of anchor pole, while can also absorb when arc connects deformation
Part energy.
3 periphery of deformation crush block is provided with soft shell to improve lateral binding force, and passes through rotation when mounted
Turn high-strength nut 2 and is pressed into cydariform；Water swelling rubber 32 inside deformation crush block 3 expands rear casing becomes cylinder from cydariform
Shape applies prestressing force to anchor pole in the process；Simultaneously after surrouding rock deformation, deformation crush block 3 is compressed into cydariform again, right
Country rock, which carries out energy-absorbing, makes pressure further, and setting layer of steel wire belt 31 inside soft shell, pierce tap beam intensity is high to have one again
Fixed deformability.
The installation and application of the extending multistage pressure-relieving achor bar of this practicality is：
(1) first then anchor pole is fitted into drilling by 6 injection hole bottom of a small amount of resin anchoring agent；
(2) after anchor head 10 reaches predetermined depth, pallet 4, deformation crush block 3,5 and of baffle are loaded onto successively in anchor pole end
High-strength nut 2, turning high-strength nut 2 makes soft shell be deformed into cydariform；
(3) after waiting until that anchor head 10 reaches some strength with resin anchoring agent 6, by micropore water filling outside soft shell, make
32 water swelling of expanded rubber, which is deformed, applies certain prestressing force to anchor pole；
(4) apply prestressing force after, by the injected hole 41 of 4 both sides of pallet into bolthole injecting resin Anchor Agent 6；
(5) body of rod deforms first by depressor 8 when anchor pole works, and the body of rod is by 9 groups of high strong spring 7 and rubber inside depressor 8
At entirety compressed, body of rod elongation, energy-absorbing allows pressure；
(6) persistently increase with the anchor stress that continues to deform of country rock, deformation crush block 3 is compressed, and the steady of country rock is maintained
It is fixed.
Claims (3)
1. a kind of extending multistage pressure-relieving achor bar, it is by anchor bar body, the body of rod by depressor, deformation crush block, pallet, baffle, height
Strong nut and anchor head composition, which is characterized in that the anchor pole is bonded using overall length, and resin is equipped between anchor bar body and the wall of a borehole
The adhesive layer that Anchor Agent is formed；The deformation crush block is arranged between pallet and baffle, mainly by water swelling rubber
It makes, and a soft shell is set to it；The body of rod is positioned close to the position of body of rod tail end by depressor, mainly by rubber
Glue and high-strength spring composition.
2. the extending multistage pressure-relieving achor bar of one kind according to claim 1, which is characterized in that the body of rod is main by depressor
It is made of rubber and high-strength spring, spring forms a whole with rubber, and the body of rod is by depressor and close to the anchor bar body of anchor head side
Part is connected using arc.
3. the extending multistage pressure-relieving achor bar of one kind according to claim 1, which is characterized in that the deformation crush block
Soft shell is made of steel wire beam, and in shell side, there are micropores；It respectively opens there are one injected hole the pallet both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721603360.6U CN207740025U (en) | 2017-11-27 | 2017-11-27 | A kind of extending multistage pressure-relieving achor bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721603360.6U CN207740025U (en) | 2017-11-27 | 2017-11-27 | A kind of extending multistage pressure-relieving achor bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207740025U true CN207740025U (en) | 2018-08-17 |
Family
ID=63116264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721603360.6U Expired - Fee Related CN207740025U (en) | 2017-11-27 | 2017-11-27 | A kind of extending multistage pressure-relieving achor bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207740025U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109098744A (en) * | 2018-10-12 | 2018-12-28 | 河南理工大学 | A kind of anchor pole squash type Anchor Agent connecting pipe and application method |
| CN110924389A (en) * | 2019-12-10 | 2020-03-27 | 华北水利水电大学 | Device and system for intelligently monitoring stability of extensible anchor rod and acoustic emission rock-soil body under control of multistage stress and displacement |
| CN110926538A (en) * | 2019-12-10 | 2020-03-27 | 华北水利水电大学 | Multistage stress and displacement control extensible anchor rod and temperature, humidity and underground water monitoring device |
| CN110925003A (en) * | 2019-12-10 | 2020-03-27 | 华北水利水电大学 | Extensible anchor rod with multistage stress and displacement control and multifunctional intelligent monitoring device |
| CN111271107A (en) * | 2020-02-17 | 2020-06-12 | 上海盈彬建筑工程有限责任公司 | Double yielding anchor rod and construction method |
| CN111425231A (en) * | 2020-03-31 | 2020-07-17 | 中国矿业大学 | Long and short anchor cable coordinated energy absorption yielding device and construction method |
| CN112664249A (en) * | 2020-11-30 | 2021-04-16 | 绍兴文理学院 | Let and press multistage big deformation stock that bears of adjustable length |
| CN113217053A (en) * | 2021-05-14 | 2021-08-06 | 江苏科技大学 | Self-adaptive large-deformation prestressed anchor rod |
| CN114320416A (en) * | 2021-12-29 | 2022-04-12 | 西安建筑科技大学 | Expansion shell type yielding anchor rod and use method thereof |
| CN114351699A (en) * | 2021-11-15 | 2022-04-15 | 同济大学 | Graded yielding self-resetting anti-seismic anchor rod and installation method |
-
2017
- 2017-11-27 CN CN201721603360.6U patent/CN207740025U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109098744A (en) * | 2018-10-12 | 2018-12-28 | 河南理工大学 | A kind of anchor pole squash type Anchor Agent connecting pipe and application method |
| CN110924389A (en) * | 2019-12-10 | 2020-03-27 | 华北水利水电大学 | Device and system for intelligently monitoring stability of extensible anchor rod and acoustic emission rock-soil body under control of multistage stress and displacement |
| CN110926538A (en) * | 2019-12-10 | 2020-03-27 | 华北水利水电大学 | Multistage stress and displacement control extensible anchor rod and temperature, humidity and underground water monitoring device |
| CN110925003A (en) * | 2019-12-10 | 2020-03-27 | 华北水利水电大学 | Extensible anchor rod with multistage stress and displacement control and multifunctional intelligent monitoring device |
| CN111271107A (en) * | 2020-02-17 | 2020-06-12 | 上海盈彬建筑工程有限责任公司 | Double yielding anchor rod and construction method |
| CN111425231B (en) * | 2020-03-31 | 2021-03-26 | 中国矿业大学 | Long and short anchor cable coordinated energy absorption yielding device and construction method |
| CN111425231A (en) * | 2020-03-31 | 2020-07-17 | 中国矿业大学 | Long and short anchor cable coordinated energy absorption yielding device and construction method |
| CN112664249A (en) * | 2020-11-30 | 2021-04-16 | 绍兴文理学院 | Let and press multistage big deformation stock that bears of adjustable length |
| CN112664249B (en) * | 2020-11-30 | 2022-02-01 | 绍兴文理学院 | Let and press multistage big deformation stock that bears of adjustable length |
| CN113217053A (en) * | 2021-05-14 | 2021-08-06 | 江苏科技大学 | Self-adaptive large-deformation prestressed anchor rod |
| CN114351699A (en) * | 2021-11-15 | 2022-04-15 | 同济大学 | Graded yielding self-resetting anti-seismic anchor rod and installation method |
| CN114351699B (en) * | 2021-11-15 | 2023-02-07 | 同济大学 | Graded yielding self-resetting anti-seismic anchor rod and installation method |
| CN114320416A (en) * | 2021-12-29 | 2022-04-12 | 西安建筑科技大学 | Expansion shell type yielding anchor rod and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180817 Termination date: 20191127 |
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| CF01 | Termination of patent right due to non-payment of annual fee |