CN108071410A - A kind of piston type increases resistance pressure-relieving achor bar and construction method - Google Patents
A kind of piston type increases resistance pressure-relieving achor bar and construction method Download PDFInfo
- Publication number
- CN108071410A CN108071410A CN201711204847.1A CN201711204847A CN108071410A CN 108071410 A CN108071410 A CN 108071410A CN 201711204847 A CN201711204847 A CN 201711204847A CN 108071410 A CN108071410 A CN 108071410A
- Authority
- CN
- China
- Prior art keywords
- rod
- screw
- stop block
- resistance
- thread steel
- 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.)
- Granted
Links
- QLMNCUHSDAGQGT-UHFFFAOYSA-N sintofen Chemical compound N1=C(C(O)=O)C(=O)C=2C(OCCOC)=CC=CC=2N1C1=CC=C(Cl)C=C1 QLMNCUHSDAGQGT-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 238000010276 construction Methods 0.000 title abstract description 6
- 239000011435 rock Substances 0.000 claims abstract description 43
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 239000000725 suspension Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 5
- 238000005065 mining Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of piston types to increase resistance pressure-relieving achor bar and construction method, and pressure device, the body of rod, pallet and nut are allowed including increasing resistance；The increasing resistance allows pressure device to be made of screw-thread steel, increasing stop block；The body of rod is a hollow threaded anchor rod, and its one end is closed, and the other end is open；Inside its wall thickness of a part of anchor pole gradually increases wherein by the blind end of threaded anchor rod；The increasing stop block is arranged on the wall thickness thinnest part of anchor pole, and the increasing stop block is extruded in the blind end of threaded anchor rod by screw-thread steel；The screw-thread steel extends to wall rock drill-hole outer and described nut cooperation and pallet is pressed on country rock wall.
Description
Technical field
Increase resistance pressure-relieving achor bar the present invention relates to a kind of tunnel or tunnel support apparatus more particularly to a kind of piston type and apply
Work method.
Background technology
Since entering the new century, with China's rapid development of economy, society opens the growing of coal demand
Ability continuous improvement is adopted, deep mining is the inexorable trend of coal industry development.But with the progress of deep mining, country rock should
Power increases, and country rock generates large deformation, but existing anchor pole elongation percentage is low, it is impossible to adapt to the country rock generated in deep mining operation
Large deformation problem is badly in need of a kind of method for protecting support for the country rock large deformation that can effectively control at present.
Increase resistance pressure-relieving achor bar itself can occur advantageous deformation in the case of country rock large deformation, can effectively allow pressure
In the case of continue to play to the control action of country rock；Simultaneously with the deformation of anchor pole, Support Resistance gradually increases, and increases anchor pole pair
The control effect of surrouding rock deformation；
A kind of increase is disclosed in patent 201210020742.1 and hinders pressure-relieving achor bar, this device bolt diameter is different, anchor
Gu section diameter becomes smaller, the anchor force of end can be reduced, it is impossible to play control ability of the anchor pole to surrouding rock deformation completely.
The content of the invention
The present invention is to solve the above-mentioned problems, it is proposed that a kind of piston type increases resistance pressure-relieving achor bar and construction method, to solve
Elongation percentage existing for existing anchor pole is low, it is impossible to adapt to the country rock large deformation problem generated in deep mining operation.
To achieve these goals, the present invention adopts the following technical scheme that：
A kind of piston type increases resistance pressure-relieving achor bar, and pressure device, the body of rod, pallet and nut are allowed including increasing resistance；It is described to increase resistance and allow pressure
Device is made of screw-thread steel, increasing stop block；The body of rod is a hollow threaded anchor rod, and its one end is closed, and the other end is open；
Inside its wall thickness of a part of anchor pole gradually increases wherein by the blind end of threaded anchor rod；The increasing stop block is arranged on anchor
The wall thickness thinnest part of bar, the increasing stop block are extruded in the blind end of threaded anchor rod by screw-thread steel；The screw-thread steel extension
Coordinate outside to wall rock drill-hole with the nut and pallet is pressed on country rock wall.
Further, the wall thickness change area of the cannulated threaded anchor pole is disposed therein a part, prevents end anchorage pair
Anchor pole wall thickness has an impact, and the other end leaves larger surplus, increases maximum resistance segment length.
Preferably, the increasing stop block links together with screw-thread steel, as screw-thread steel moves together.
Preferably, the increasing stop block is truncated cone-shaped, and the gradient of round platform outer ring is identical with the variation size of threaded anchor rod wall thickness,
It is bonded to increase stop block with threaded anchor rod inner surface, prevents from causing the body of rod other damages in opposite sliding process.
Preferably, the increasing stop block is made of metal material.
Preferably, the pallet is metal butterfly pallet.
The construction method of the present invention is as follows：
It is punched in tunnel or tunnel surrounding, resistance pressure-relieving achor bar will be increased and anchored to using Anchor Agent in country rock；The other end is worn
The pallet attaching nut being arranged on country rock is crossed, then applies pretightning force to screw-thread steel using nut；Surrounding rock supporting initial stage generates
Deflection it is larger, surrouding rock deformation can exceed the scope that can bear of anchor pole, make in anchor pole axial tension become larger more than anchor pole this
When the Support Resistance that provides, increase stop block and the body of rod generate relative displacement, increase stop block and screw-thread steel moves outside drilling, due to the body of rod
The radius of inner wall is less and less, therefore with the increase of country rock and entire bolt deformation amount, and entire suspension roof support resistance is also therewith
Increase, at the end of large deformation, surrouding rock deformation active force and suspension roof support resistance reach balance again, give full play to the branch of anchor pole
Shield ability.
Beneficial effects of the present invention are：
(1) piston type, which increases resistance pressure-relieving achor bar, advantageous deformation occurs in country rock large deformation itself, can effectively allow pressure
In the case of continue to play to the control action of country rock；
(2) with the movement of screw-thread steel, the wall thickness of the body of rod gradually increases, the ability increase of entire anchor pole resistance to deformation, branch
Shield resistance gradually increases, and increases control effect of the anchor pole to surrouding rock deformation；
(3) with the deformation of anchor pole, anchor pole slightly expands, and the frictional resistance between increase and country rock provides a part of branch
Protect resistance.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not form the improper restriction to the application for explaining the application.
Fig. 1 increases resistance pressure-relieving achor bar for piston type.
Fig. 2 allows pressure device to increase resistance.
In figure：1 body of rod, 2 pallets, 3 nuts, 4 screw-thread steels, 5 increase stop block.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.It is unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " bag
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
As background technology is introduced, existing anchor pole elongation percentage is low, it is impossible to adapt to what is generated in deep mining operation
Country rock large deformation problem the technical issues of in order to solve as above, increases resistance pressure-relieving achor bar present applicant proposes a kind of piston type and applies
Work method.
In a kind of typical embodiment of the application, include increasing resistance and allow pressure as shown in Figure 1, piston type increases resistance pressure-relieving achor bar
Device, the body of rod 1, pallet 2, nut 3；The increasing resistance allows pressure device to be made of screw-thread steel 4, increasing stop block 5.Increase stop block 5 and screw-thread steel 4
Connection, positioned at 1 wall thickness thinnest part of the body of rod；Screw-thread steel 4 extends to outside wall rock drill-hole to coordinate with the nut 3 and is pressed in pallet 2
On country rock wall.
Pallet 2, nut 3 are sleeved on the afterbody of the body of rod 1 successively, and screw-thread steel 5 is in the hollow cavity of the body of rod 1.
The body of rod 1 is cannulated threaded anchor pole, and which part bar wall thickness is into certain slope, and length about 1m, the gradient can
Gradient adjustment is increased with Support Resistance according to actual needs and resistance；Wall thickness sloping region is located in the middle part of anchor pole, and in the body of rod 1
One end positioned at foot of hole is closed, and it is the solid body of rod to change section edge, that is, wall thickness thinnest part to wall thickness, in order to fully send out
The anchoring effect of anchored end is waved, and prevents wet environment from corroding to anchor pole inside.
Piston type disclosed by the invention, which increases resistance pressure-relieving achor bar, advantageous deformation occurs in country rock large deformation itself, can have
Effect, which allows, to be continued to play to the control action of country rock in the case of pressure；
Further, the increasing stop block 5 is located at 1 wall thickness thinnest part of the body of rod, is fixedly connected with screw-thread steel 4, type of attachment is preferential
Selection welding；With the movement of screw-thread steel, the wall thickness of the body of rod gradually increases, the ability increase of entire anchor pole resistance to deformation, supporting
Resistance gradually increases, and increases control effect of the anchor pole to surrouding rock deformation；
Further, it is truncated cone-shaped to increase stop block 5, and the gradient of round platform outer ring is identical with the wall thickness gradient of the body of rod；So that two
Component can be very good to coordinate.
Further, the increasing stop block 5 is made of metal material, and pallet 2 is metal butterfly pallet, increases the strong of component
Degree.
Screw-thread steel is full thread, and during opposite slip, screw thread is exposed, and is contacted with the wall of a borehole, can provide one
Fixed Support Resistance.Concrete construction method is as follows：
It is punched in tunnel or tunnel surrounding, which is anchored to using Anchor Agent in country rock, is then given using nut 3
Anchor pole applies pretightning force.The deflection that surrounding rock supporting initial stage generates is larger, and surrouding rock deformation can exceed the scope that anchor pole can bear,
Axial tension is made in anchor pole to become larger the Support Resistance provided at this time more than anchor pole, increases stop block 5 and the body of rod 1 generates relative displacement；With
The increase of country rock and bolt deformation amount, suspension roof support resistance also increases therewith, at the end of large deformation, surrouding rock deformation active force
Reach balance again with suspension roof support resistance, give full play to the support capacity of anchor pole.
The foregoing is merely the preferred embodiments of the application, are not limited to the application, for the skill of this field
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (7)
1. a kind of piston type increases resistance pressure-relieving achor bar, which is characterized in that allows pressure device, the body of rod, pallet and nut including increasing resistance；It is described
Increasing resistance allows pressure device to be made of screw-thread steel, increasing stop block；The body of rod is a hollow threaded anchor rod, and its one end is closed, separately
Open at one end；Inside its wall thickness of a part of anchor pole gradually increases wherein by the blind end of threaded anchor rod；The increasing resistance
Block is arranged on the wall thickness thinnest part of anchor pole, and the increasing stop block is extruded in the blind end of threaded anchor rod by screw-thread steel；Described
Screw-thread steel extends to wall rock drill-hole outer and described nut cooperation and pallet is pressed on country rock wall.
2. piston type as described in claim 1 increases resistance pressure-relieving achor bar, which is characterized in that the wall thickness of the cannulated threaded anchor pole becomes
Change area and be disposed therein a part.
3. piston type as described in claim 1 increases resistance pressure-relieving achor bar, which is characterized in that the increasing stop block is connected to screw-thread steel
Together, as screw-thread steel moves together.
4. piston type as described in claim 1 increases resistance pressure-relieving achor bar, which is characterized in that the stop block that increases is truncated cone-shaped, round platform
The gradient of outer ring is identical with the variation size of threaded anchor rod wall thickness.
5. piston type as described in claim 1 increases resistance pressure-relieving achor bar, which is characterized in that the increasing stop block is by metal material system
Into.
6. piston type as described in claim 1 increases resistance pressure-relieving achor bar, which is characterized in that the pallet is metal butterfly pallet.
7. piston type as described in claim 1 increases the method that resistance pressure-relieving achor bar is constructed, which is characterized in that in tunnel or tunnel
It is punched in road country rock, the body of rod is anchored to using Anchor Agent in country rock；One end connection of screw-thread steel is increased into stop block, is inserted into the body of rod
In；The other end passes through the pallet attaching nut being arranged on country rock, then applies pretightning force to screw-thread steel using nut；Country rock branch
The deflection that shield initial stage generates is larger, and surrouding rock deformation can exceed the scope that anchor pole can bear, and axial tension in anchor pole is made to become larger
More than the Support Resistance that anchor pole provides at this time, increase stop block and the body of rod generates relative displacement, increase stop block and screw-thread steel moves outside drilling
It is dynamic, since the radius of body of rod inner wall is less and less, with the increase of country rock and entire bolt deformation amount, entire suspension roof support
Resistance also increases therewith, and at the end of large deformation, surrouding rock deformation active force and suspension roof support resistance reach balance again, fully sends out
Wave the support capacity of anchor pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711204847.1A CN108071410B (en) | 2017-11-27 | 2017-11-27 | Piston type resistance-increasing yielding anchor rod and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711204847.1A CN108071410B (en) | 2017-11-27 | 2017-11-27 | Piston type resistance-increasing yielding anchor rod and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108071410A true CN108071410A (en) | 2018-05-25 |
| CN108071410B CN108071410B (en) | 2020-04-21 |
Family
ID=62157643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711204847.1A Active CN108071410B (en) | 2017-11-27 | 2017-11-27 | Piston type resistance-increasing yielding anchor rod and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108071410B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946377A (en) * | 2020-09-14 | 2020-11-17 | 中国矿业大学 | End anchoring enhanced yielding anchor rod device and use method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2313960Y (en) * | 1997-12-16 | 1999-04-14 | 西安矿业学院 | Recoverable plastic anchor stock |
| CN102286975A (en) * | 2011-07-06 | 2011-12-21 | 武汉大学 | Constant-resistance energy-absorbing anchor rod for strengthening large-deformation rock body |
| CN102434180A (en) * | 2011-11-18 | 2012-05-02 | 山东科技大学 | Continuous resistance-increasing deforming anchor rod |
| CN102536280A (en) * | 2012-01-30 | 2012-07-04 | 山东大学 | Resistance-increasing yielding anchor rod |
| CN202338350U (en) * | 2011-11-18 | 2012-07-18 | 山东科技大学 | Novel continuous resistance increasing deformation anchor rod |
| CN202866845U (en) * | 2012-09-02 | 2013-04-10 | 山东科技大学 | Deformation resisting anchor rope/anchor rod capable of detecting anchoring quality timely |
-
2017
- 2017-11-27 CN CN201711204847.1A patent/CN108071410B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2313960Y (en) * | 1997-12-16 | 1999-04-14 | 西安矿业学院 | Recoverable plastic anchor stock |
| CN102286975A (en) * | 2011-07-06 | 2011-12-21 | 武汉大学 | Constant-resistance energy-absorbing anchor rod for strengthening large-deformation rock body |
| CN102434180A (en) * | 2011-11-18 | 2012-05-02 | 山东科技大学 | Continuous resistance-increasing deforming anchor rod |
| CN202338350U (en) * | 2011-11-18 | 2012-07-18 | 山东科技大学 | Novel continuous resistance increasing deformation anchor rod |
| CN102536280A (en) * | 2012-01-30 | 2012-07-04 | 山东大学 | Resistance-increasing yielding anchor rod |
| CN202866845U (en) * | 2012-09-02 | 2013-04-10 | 山东科技大学 | Deformation resisting anchor rope/anchor rod capable of detecting anchoring quality timely |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946377A (en) * | 2020-09-14 | 2020-11-17 | 中国矿业大学 | End anchoring enhanced yielding anchor rod device and use method thereof |
| CN111946377B (en) * | 2020-09-14 | 2024-05-10 | 中国矿业大学 | End anchoring enhancement type yielding anchor rod device and application method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108071410B (en) | 2020-04-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8974151B2 (en) | Constant-resistance large-deformation anchor rod | |
| CN104265339B (en) | A kind of extruding, friction-type energy-absorption anchor rod | |
| US9845678B2 (en) | Locally anchored self-drilling hollow rock bolt | |
| MX2007003274A (en) | An elongate element tensioning member. | |
| Ansell | Dynamic testing of steel for a new type of energy absorbing rock bolt | |
| CN103758550B (en) | A kind of liquid expanding allows presses the anti-High-geotemperature anchor pole of antidetonation | |
| CN101949294A (en) | Prestressed full-length anchorage support method | |
| EP3954862A1 (en) | Npr anchor rod | |
| CN107620603A (en) | A kind of novel slurry filling anchor pole with steel loop bar | |
| CN108979691A (en) | A kind of multistage pressure-relieving achor bar | |
| CN104481110B (en) | Back bolt | |
| CN107218072A (en) | A kind of extrusion friction type constant-resistance allows pressure large deformation anchor rod | |
| CN102536280B (en) | Resistance-increasing yielding anchor rod | |
| CN108071410A (en) | A kind of piston type increases resistance pressure-relieving achor bar and construction method | |
| CN205445644U (en) | Interior overlength shell type pipe seam stock of wearing | |
| CN107142934A (en) | A kind of expanding enlarged footing anchor bolt support | |
| CN102562109B (en) | Resistance-increasing yielding high-deformation anchor rod and processing method thereof | |
| CN205036393U (en) | Have pipe seam stock of end anchor and yielding property ability concurrently | |
| CN104481565B (en) | A kind of pressure dispersing type large deformation self adaptation anchor pole | |
| CN204082188U (en) | A kind of extruding, friction-type energy-absorption anchor rod | |
| CN209430233U (en) | One kind rises shell anchorage head | |
| CN206071627U (en) | Energy-consumption impact-reduction anchor rod device for underground deep well roadway | |
| CN203856491U (en) | Combined anchor rod structure | |
| CN207740024U (en) | A kind of pressure-relieving achor bar | |
| CN109811765A (en) | A kind of anchor rod device and its application method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |