CN105822331A - Resistance-increasing yielding bolt - Google Patents
Resistance-increasing yielding bolt Download PDFInfo
- Publication number
- CN105822331A CN105822331A CN201610256081.0A CN201610256081A CN105822331A CN 105822331 A CN105822331 A CN 105822331A CN 201610256081 A CN201610256081 A CN 201610256081A CN 105822331 A CN105822331 A CN 105822331A
- Authority
- CN
- China
- Prior art keywords
- latch
- increasing
- pressure
- rod
- resistance
- 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
- 238000006073 displacement reaction Methods 0.000 claims abstract description 10
- 238000010008 shearing Methods 0.000 claims abstract description 9
- 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 claims description 15
- 239000007769 metal material Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract description 20
- 230000008093 supporting effect Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 description 5
- 230000003068 static effect Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining 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
- E21D21/0093—Accessories
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)
Abstract
The invention discloses a resistance-increasing yielding bolt. The resistance-increasing yielding bolt comprises a bolt body (1) and a yielding component (2) which is arranged on the outer surface of the tail end of the bolt body (1) in a sleeved manner, wherein the sleeved connection part of the bolt body (1) and the yielding component (2) is provided with a plurality of grades of bolts (3) for limiting the bolt body (1) and the yielding component (2); when axial tensile force of the bolt reaches a set value, the bolts (3) can be sheared off stage by stage, so that the bolt body (1) and the yielding component (2) can set displacement in a relative sliding manner. The resistance-increasing yielding bolt disclosed by the invention can be stretched to stretch stage by stage due to great deformation of surrounding rocks, and working resistance increasing stage by stage is provided to the surrounding rocks by increasing shearing resistance of the bolts, so that the resistance-increasing yielding bolt not only can control the deformation of the surrounding rocks stage by stage, but also has relatively good supporting effect under great deformation of the surrounding rocks, and therefore, the stability of the tunnel is guaranteed.
Description
Technical field
The present invention relates to a kind of tunnel or tunnel support anchor pole, particularly relate to a kind of increasing and hinder pressure-relieving achor bar.
Background technology
Deep tunnel or deep tunnel country rock potential deformation can be very big, and surrouding rock deformation includes a part of uncontrollable deformation, it should make roadway surrounding rock energy rationally be discharged, give full play to the self-bearing ability of country rock.
During underground engineering support, anchor pole is support apparatus most widely used, that consumption is most.With the continuous intensification of mining depth, roadway surrounding rock usually shows the feature of large deformation, but existing anchor pole elongation percentage is low, and Support Resistance can not strengthen with bolt deformation, it is impossible to adapt to the feature of roadway surrounding rock large deformation.
Summary of the invention
Object of the present invention is to provide a kind of increasing and hinder pressure-relieving achor bar, low to solve the elongation percentage of existing anchor pole existence, it is impossible to the problem adapting to roadway surrounding rock large deformation needs.
For solving above technical problem, the technical solution adopted in the present invention is: a kind of increasing hinders pressure-relieving achor bar, including the body of rod, be sleeved on and allow pressure component outside the tail end of the body of rod, the described body of rod with allow the socket place of pressure component and be provided with some grades of latches to limit the body of rod and to allow the displacement of pressure component；When anchor pole axial tension reaches setting value, latch can be cut off step by step so that the body of rod with allow pressure component can relative slide set displacement.
Further, described latch termination can cut part be hollow cavity, and depending on the shearing resistance value that the big I of hollow cavity is by the setting of each latch.
Further, the resistance allowing pressure component the most relatively slide described in the prevention that latch provides increases step by step.
Further, the tail end shaft of the described body of rod is provided with a series of aperture, passes for latch.
Further, allow press described in and be provided with one group of symmetrical elongated slot on the axis of member front end both sides at corresponding latch, in order to prop up and latch at different levels can be sheared.
Further, the weak viscosity solid state buffer body of compressible deformation it is filled with between latches at different levels.
Further, described latch with the body of rod for threadeding.
Further, pressure component is allowed to be also equipped with pallet and the nut of spacing pallet from body of rod one end farther out.
In the present invention, anchor pole can be stretched with country rock generation large deformation and extends step by step, and by increasing the shear resistance of latch, country rock is provided the working resistance increased step by step, therefore the present invention can not only progressively deformation controlling for rock surrounding gateways, and still there is under the conditions of country rock large deformation good support action, to ensure stablizing of tunnel.The present invention is also equipped with advantages below: the tail end shaft aperture pitch of the regulation body of rod can change the distance progressively allowing surrouding rock deformation, and the two ends hollow cavity structure size that regulation is inserted slightly can change drag size, so it adapts to various degrees of roadway deformation.The each structure manufacture of the present invention is simple, and device is easy to assembly, the least with the impact of common prestressed anchor phase comparison boring aperture size.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the present invention.
Fig. 2 is the structural representation allowing in Fig. 1 mode and pressing component.
Fig. 3 is the structural representation of the body of rod in Fig. 1 mode.
Fig. 4 is the drawing of latch in Fig. 1 mode.
In figure: the 1-body of rod, 2-allows pressure component, 3-latch, 4-pallet, 5-nut, 6-elongated slot, 7-aperture, 8-hollow cavity.
Detailed description of the invention
Below in conjunction with embodiment, embodiments of the present invention are further described.
As Figure 1-4, a kind of increasing hinders pressure-relieving achor bar, including the body of rod 1, is set with to allow and presses component 2 outside the tail end of the body of rod 1, and the two is limited by a socket pin 3.
Pressure component 2 is allowed to be provided with external screw thread, equipped with the nut 5 of pallet 4 and spacing pallet outside male thread portion from the body of rod 1 one end farther out.
Nut 5 and allow pressure component 2 be threaded connection.
The mid portion of described pallet 4 is provided with a hole for allowing pressure component 2 pass.
The described elongated slot 6 allowing pressure both sides, component 2 front end axis be provided with one group of symmetry, the rear shaft of the described body of rod 1 is provided with a series of aperture 7, passes for latch 3；Described aperture 7 is female thread structure, and described latch 3 is external thread structure, in order to fixed core 1 and latch 3；The two ends of described latch is hollow cavity 8.
The hollow cavity internal diameter of pressure component 2 is allowed to match with the diameter of the body of rod 1, the external diameter of latch 3, the width of elongated slot 6 match with the diameter of aperture 7, elongated slot 6 length matches with two aperture distances of lie farthest away on the body of rod 1, and latch 3 length presses component 2 external diameter equal with allowing；Allowing pressure component 2 and the tensile strength of the body of rod 1 should be basically identical, notch compressive resistance should be not less than the shearing resistance of each latch termination and the stretching resistance of the slightly below body of rod 1, and the latch maximum shearing resistance of last stress must not be less than anchor pole working resistance；Depending on aperture 7 spacing and elongated slot 6 length press surrouding rock deformation allowed band, depending on latch 3 external diameter and hollow cavity 8 size are by the Resistance Value of each setting.
Its length is increased step by step by stretching and suitable for surrounding rock large deformation the working resistance increased step by step is provided in order to realize the present invention, allow pressure component 2 be enclosed within the body of rod 1, by the hollow cavity 8 of latch 3 termination, latch 3 be screwed into each aperture of the body of rod 7 and make latch 3 two ends just be embedded in elongated slot 6 not appear.
Number consecutively of being turned left from the right side by aperture interpolation pin in Fig. 1 is for 1., 2., 3., 4. etc., then hollow cavity 8 internal diameter of latch two ends is sequentially reduced from left to right.
Time static, pressure component 2 and the body of rod 1 is allowed to be in relative static conditions, when the axial tension of the relative separation being subject between the two reaches the maximum shearing resistance force value that 1. number latch sets, 1. number latch two ends will be cut off by elongated slot 6, allow pressure component 2 and the body of rod 1 can produce the displacement of relative separation, and when displacement reaches first setting value, the mobile of elongated slot 6 will be stopped by a 2. number latch.
If now allowing the maximum shearing resistance force value that the axial tension of the relative separation pressing component 2 and the body of rod 1 to be subject to sets still above 2. number latch, the most 2. number latch two ends is also cut off by elongated slot 6 notch, pressure component 2 and the body of rod 1 is allowed again to produce the displacement of relative separation, and when displacement reaches secondary setting value, pressure the mobile of component 2 will be stopped by a 3. number latch.
If outside axial tension is still greater than the maximum shearing resistance force value that 3. number latch sets, then pressure component 2 and the body of rod 1 is allowed to produce the displacement of relative separation again.By this circulation law, during until outside axial tension is reduced to the maximum shearing resistance force value that a certain latch sets, both will no longer occur relative movement to remain static.
For prevent from allowing pressure component 2 sliding time the impact of elongated slot 6 notch cut off latch termination, make second and thereafter latch sleeve static resistance is not performed to setting value, in elongated slot 6, between two latches, insert the weak viscosity solid state buffer body of some compressible deformation.
For the exposed corrosion of elongated portion after preventing anchor pole from extending, need before assembling the pre-stretched section body of rod to carry out mopping and is coated with anti-corrosion grease processing.
For increasing strength of parts, allowing pressure component 2 be made up of high tensile metal material, latch 3 is made up of brittle metal material, and pallet 4 is metal butterfly pallet.
When applying the present invention in tunnel, first punch in roadway surrounding rock, pressure component 2, the body of rod 1 and latch 3 then will be allowed to be assembled integrally, utilize Anchor Agent to anchor in country rock this anchor pole afterwards, install pallet 4 again, finally utilize nut 5 to anchor pole Shi Hanzhang.
The foregoing is only preferred embodiment of the present invention; not thereby embodiments of the present invention and protection domain are limited; to those skilled in the art; the scheme obtained by the equivalent and obvious change that all utilization description of the invention and diagramatic content done should be can appreciate that, all should be included in protection scope of the present invention.
Claims (10)
1. one kind increases resistance pressure-relieving achor bar, including the body of rod (1), it is sleeved on allowing outside the tail end of the body of rod (1) and presses component (2), it is characterized in that, the described body of rod (1) with allow pressure component (2) socket place be provided with some grades of latches (3) with limit the body of rod (1) and allow pressure component (2) displacement；When anchor pole axial tension reaches setting value, latch (3) can be cut off step by step so that the body of rod (1) with allow pressure component (2) can relative slide set displacement.
A kind of increasing the most according to claim 1 hinders pressure-relieving achor bar, it is characterized in that, described latch (3) termination can cut part be hollow cavity (8), and depending on the shearing resistance value that sets by each latch (3) of the big I of hollow cavity (8).
A kind of increasing the most according to claim 1 hinders pressure-relieving achor bar, it is characterised in that the resistance allowing pressure component (2) the most relatively slide described in the prevention that latch (3) provides increases step by step.
A kind of increasing the most according to claim 1 hinders pressure-relieving achor bar, it is characterised in that the tail end shaft of the described body of rod (1) is provided with a series of aperture (7), passes for latch (3).
A kind of increasing the most according to claim 1 hinders pressure-relieving achor bar, it is characterized in that, described allowing presses corresponding latch (3) place on the axis of component (2) both sides, front end to be provided with one group of symmetrical elongated slot (6), in order to prop up and can shear latch at different levels (3).
A kind of increasing the most according to claim 1 hinders pressure-relieving achor bar, it is characterised in that be filled with the weak viscosity solid state buffer body of compressible deformation between latches at different levels (3).
The most according to claim 1 a kind of increase resistance pressure-relieving achor bar, it is characterised in that described latch (3) with the body of rod (1) for threadeding.
The most according to claim 1 a kind of increase resistance pressure-relieving achor bar, it is characterised in that described in allow pressure component (2) be made up of high tensile metal material, described latch (3) is made up of brittle metal material.
9. hinder pressure-relieving achor bar according to a kind of increasing the described in any one in claim 1-7, it is characterized in that, allow pressure component (2) at the nut (5) being also equipped with pallet (4) and spacing pallet from the body of rod (1) one end farther out.
A kind of increasing the most according to claim 9 hinders pressure-relieving achor bar, it is characterised in that described pallet (4) is metal butterfly pallet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610256081.0A CN105822331B (en) | 2016-04-22 | 2016-04-22 | One kind increases resistance pressure-relieving achor bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610256081.0A CN105822331B (en) | 2016-04-22 | 2016-04-22 | One kind increases resistance pressure-relieving achor bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105822331A true CN105822331A (en) | 2016-08-03 |
| CN105822331B CN105822331B (en) | 2018-03-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610256081.0A Active CN105822331B (en) | 2016-04-22 | 2016-04-22 | One kind increases resistance pressure-relieving achor bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105822331B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894835A (en) * | 2017-03-16 | 2017-06-27 | 湖南大学 | A kind of pressure-relieving achor bar |
| CN106939607A (en) * | 2017-03-28 | 2017-07-11 | 湘潭大学 | One kind allows pressure to be combined bamboo reinforcement bolt-spary supports foundation ditch and its construction method |
| CN107060856A (en) * | 2017-06-07 | 2017-08-18 | 神华集团有限责任公司 | Allow pressure device outside a kind of active multistage frequency conversion |
| CN107060810A (en) * | 2017-06-07 | 2017-08-18 | 神华集团有限责任公司 | It is a kind of adapt to roadway deformation allow pressure once supporting method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4051683A (en) * | 1976-06-28 | 1977-10-04 | Jennmar Corporation | Method and apparatus for supporting a mine roof |
| GB2211260A (en) * | 1987-10-20 | 1989-06-28 | Explosifs Prod Chim | Installation of tensioned rockbolts |
| US5785463A (en) * | 1996-01-11 | 1998-07-28 | Jennmar Corporation | Combination cable bolt system |
| CN2602164Y (en) * | 2003-01-30 | 2004-02-04 | 刘天有 | Prepackage damping screw nut anchor bolt |
| CN102536280A (en) * | 2012-01-30 | 2012-07-04 | 山东大学 | Resistance-increasing yielding anchor rod |
| CN103541750A (en) * | 2013-10-21 | 2014-01-29 | 辽宁工程技术大学 | Alternately-distributed energy-absorbing overlength combined anchor rod for mining and application method |
| CN204551463U (en) * | 2015-04-27 | 2015-08-12 | 李金瞳 | The anchor pole of a kind of rotatable break-in and recovery |
| CN204703935U (en) * | 2015-06-19 | 2015-10-14 | 鹤壁市中大矿业科技有限公司 | Anchor pole is with stirring pin nut |
-
2016
- 2016-04-22 CN CN201610256081.0A patent/CN105822331B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4051683A (en) * | 1976-06-28 | 1977-10-04 | Jennmar Corporation | Method and apparatus for supporting a mine roof |
| GB2211260A (en) * | 1987-10-20 | 1989-06-28 | Explosifs Prod Chim | Installation of tensioned rockbolts |
| US5785463A (en) * | 1996-01-11 | 1998-07-28 | Jennmar Corporation | Combination cable bolt system |
| CN2602164Y (en) * | 2003-01-30 | 2004-02-04 | 刘天有 | Prepackage damping screw nut anchor bolt |
| CN102536280A (en) * | 2012-01-30 | 2012-07-04 | 山东大学 | Resistance-increasing yielding anchor rod |
| CN103541750A (en) * | 2013-10-21 | 2014-01-29 | 辽宁工程技术大学 | Alternately-distributed energy-absorbing overlength combined anchor rod for mining and application method |
| CN204551463U (en) * | 2015-04-27 | 2015-08-12 | 李金瞳 | The anchor pole of a kind of rotatable break-in and recovery |
| CN204703935U (en) * | 2015-06-19 | 2015-10-14 | 鹤壁市中大矿业科技有限公司 | Anchor pole is with stirring pin nut |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894835A (en) * | 2017-03-16 | 2017-06-27 | 湖南大学 | A kind of pressure-relieving achor bar |
| CN106894835B (en) * | 2017-03-16 | 2021-03-12 | 湖南大学 | Let pressure stock |
| CN106939607A (en) * | 2017-03-28 | 2017-07-11 | 湘潭大学 | One kind allows pressure to be combined bamboo reinforcement bolt-spary supports foundation ditch and its construction method |
| CN106939607B (en) * | 2017-03-28 | 2021-05-04 | 湘潭大学 | Yielding composite bamboo reinforcement anchor-shotcrete support foundation pit and construction method thereof |
| CN107060856A (en) * | 2017-06-07 | 2017-08-18 | 神华集团有限责任公司 | Allow pressure device outside a kind of active multistage frequency conversion |
| CN107060810A (en) * | 2017-06-07 | 2017-08-18 | 神华集团有限责任公司 | It is a kind of adapt to roadway deformation allow pressure once supporting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105822331B (en) | 2018-03-27 |
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