CN108119175B - A kind of resigning buffering energy-absorbing impact preventing anchor rod - Google Patents
A kind of resigning buffering energy-absorbing impact preventing anchor rod Download PDFInfo
- Publication number
- CN108119175B CN108119175B CN201611069021.4A CN201611069021A CN108119175B CN 108119175 B CN108119175 B CN 108119175B CN 201611069021 A CN201611069021 A CN 201611069021A CN 108119175 B CN108119175 B CN 108119175B
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- constant
- block
- resistance device
- rod
- screw thread
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- 230000003139 buffering effect Effects 0.000 title claims abstract description 25
- 239000011435 rock Substances 0.000 abstract description 25
- 230000006378 damage Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 240000002853 Nelumbo nucifera Species 0.000 abstract description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 abstract description 3
- 235000006510 Nelumbo pentapetala Nutrition 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 230000003628 erosive effect Effects 0.000 description 9
- 239000003245 coal Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002344 surface layer Substances 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
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
-
- 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)
- Vibration Dampers (AREA)
- Road Signs Or Road Markings (AREA)
Abstract
The invention discloses a kind of resigning buffering energy-absorbing impact preventing anchor rods, including the body of rod, pallet, constant-resistance device and nut；The right end of the body of rod is provided with external screw thread block, external screw thread is provided on external screw thread block, external screw thread block is used with the body of rod and is integrated, tray center is provided with body of rod mounting hole, and the body of rod passes through the mounting hole of tray center setting, and the right end of external screw thread block is equipped with nut, the centre of pallet and nut is arranged in constant-resistance device, constant-resistance device has thin-wall circular tube structure, perforation among constant-resistance device, and constant-resistance device covers on the body of rod.Nut includes rotary table block, annulus block and square blocks, is inserted into the inner hole of constant-resistance device on the left of rotary table block.This resigning buffering energy-absorbing impact preventing anchor rod can adapt to the damage feature of the quick large deformation of country rock in impact process；The release and conversion that control impact energy can effectively be guided can effectively resist the influence of impact dynamic load lotus by high energy in resigning buffering course, guarantee the stabilization of roadway surrounding rock and support system.
Description
Technical field
The present invention relates to coal mine rock burst roadway support field, specifically a kind of resigning buffering energy-absorbing impact preventing anchor rod.
Background technique
Bump is one of the great dynamic disaster encountered in coal mining.Recent study discovery, China's coal-mine lane
Road bump is occupied an leading position in coal mine rock burst accident, accounts for about the 81% of bump total number of accident.With tunnel
Support technology constantly improves and innovation, the continuous development of anchorage theory level, roadway bolt or cable bolting prestress anchoraging
Technical application technical level is also improved constantly, is widely used in many underground engineering necks such as tunnel, building, mine now
Domain.But tunnel supporting anchor rod traditional at present is not designed from erosion control angle mostly, resistance to shock loads ability is limited, no
It is able to satisfy bump mine roadway support requirement.
Summary of the invention
The purpose of the present invention is to provide a kind of resigning buffering energy-absorbing impact preventing anchor rods, to solve to propose in above-mentioned background technique
The problem of.
To achieve the above object, the invention provides the following technical scheme:
A kind of resigning buffering energy-absorbing impact preventing anchor rod, including the body of rod, pallet, constant-resistance device and nut；The right end of the body of rod is set
It is equipped with external screw thread block, external screw thread is provided on external screw thread block, external screw thread block is used with the body of rod and is integrated, in pallet
The heart is provided with body of rod mounting hole, and the body of rod passes through the mounting hole of tray center setting, and the right end of the external screw thread block is equipped with spiral shell
The centre of pallet and nut is arranged in mother, the constant-resistance device, and constant-resistance device has thin-wall circular tube structure, perforation among constant-resistance device, institute
Constant-resistance device is stated to cover on the body of rod.
As a further solution of the present invention: the nut includes rotary table block, annulus block and square blocks, the circle
Platform block, annulus block and square blocks are inserted into the inner hole of constant-resistance device on the left of the rotary table block using being integrated,
The diameter of the right circles of the rotary table block is equal to the diameter of annulus block, and the square blocks are arranged in annular regions
The right side of block.
As invention further scheme: the length range of the constant-resistance device is 150~200mm, the inner hole of constant-resistance device
Radius is 16~20mm, and the thickness range of constant-resistance device tube wall is 3~5mm.
As further scheme of the invention: being provided with internal screw thread in the nut, nut passes through internal screw thread and outer spiral shell
Line is fitted on external screw thread block.
Compared with prior art, the beneficial effects of the present invention are:
This resigning buffering energy-absorbing impact preventing anchor rod can adapt to the damage feature of the quick large deformation of country rock in impact process；It is practical
By forming the soft composite supporting construction of steel-in array pitch arrangement and roadway surrounding rock between pressing more energy-absorption anchor rods centainly in,
The release and conversion of control impact energy can effectively be guided can effectively resist by high energy in resigning buffering course
The influence of impact dynamic load lotus guarantees the stabilization of roadway surrounding rock and support system.Resigning buffering energy-absorbing impact preventing anchor rod is mainly characterized by
Have constant-resistance resigning performance, structure simple, at low cost when the load that is hit.It is primarily adapted for use in bump tunnel and large deformation lane
Road supporting.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of resigning buffering energy-absorbing impact preventing anchor rod.
Fig. 2 is the internal view of resigning buffering energy-absorbing impact preventing anchor rod.
Fig. 3 is the structural schematic diagram of nut.
Fig. 4 is the right view of Fig. 3.
Fig. 5 is resigning buffering energy-absorbing impact preventing anchor rod in the force-displacement curve figure of masterpiece used time that is hit.
In figure: the 1- body of rod, 2- pallet, 3- constant-resistance device, 4- nut, 5- external screw thread block, 6- rotary table block, the annular regions 7-
Block, 8- square blocks.
Specific embodiment
Technical solution of the present invention is described in more detail With reference to embodiment.
Please refer to Fig. 1-4, a kind of resigning buffering energy-absorbing impact preventing anchor rod, including the body of rod 1, pallet 2, constant-resistance device 3 and nut 4；
The right end of the body of rod 1 is provided with external screw thread block 5, and external screw thread, external screw thread block 5 and the body of rod 1 are provided on external screw thread block 5
Using being integrated, pallet 2 is provided centrally with body of rod mounting hole, and the body of rod 1 passes through the mounting hole of 2 center of pallet setting, described
The right end of external screw thread block 5 is equipped with nut 4, and the centre of pallet 2 and nut 4 is arranged in the constant-resistance device 3, and constant-resistance device 3 has
Thin-wall circular tube structure penetrates through among constant-resistance device 3,3 sets of the constant-resistance device on the body of rod 1, the length range of constant-resistance device 3 is 150~
200mm, the internal bore radius range of constant-resistance device 3 are 16~20mm, and the thickness range of 3 tube wall of constant-resistance device is 3~5mm, the nut 4
It is inside provided with internal screw thread, nut 4 is fitted on external screw thread block 5 by internal screw thread with externally threaded；The nut 4 includes
Rotary table block 6, annulus block 7 and square blocks 8, the rotary table block 6, annulus block 7 and square blocks 8 use integration system
It makes, is inserted into the inner hole of constant-resistance device 3 on the left of the rotary table block 6, the diameter of the right circles of the rotary table block 6 is equal to
The right side of annulus block 7 is arranged in the diameter of annulus block 7, the square blocks 8, and square blocks 8 are pulled for limiting
Hand convenient wrench tightens nut 4.
Resigning buffering energy-absorbing impact preventing anchor rod erosion control principle is mainly reflected in " anti-" and " allowing " two aspect." anti-" is embodied in country rock
Energy-absorbing erosion control component does not deform destruction under static pressure；When " allowing " is embodied in bump generation, energy-absorbing erosion control component is risen
To the drop punching effect of resigning energy-absorbing.The drop punching effect of resigning energy-absorbing is embodied in following two again in terms of: being on the one hand that bump occurs
When energy-absorbing erosion control component by being plastically deformed direct dissipation country rock impact energy；On the other hand be energy-absorbing erosion control deformation of member space to
Coal petrography provides certain energy Free up Memory, indirect dissipation country rock impact energy.
Resigning buffering energy-absorbing impact preventing anchor rod working principle
(1) before surrouding rock deformation --- installation energy-absorption anchor rod
After roadway excavation, former stable rock mass is destroyed, tunnel-surrounding surrouding rock stress is readjusted, and high stress collection is formed
In.Stress concentration degree is more than the intensity of coal and rock, and roadway surrounding rock generates plasticity softened zone, reduces the degree of stability of country rock.
Therefore, it before large deformation destruction not yet occurs for country rock, is required according to design of its support, energy-absorption anchor rod is installed.
(2) in the quasi-static deformation of country rock --- it resists, absorb deformation energy
When working face extraction, additional stress caused by adopting causes tunnel ambient stress intensity to be aggravated, roadway surrounding rock
Deformation aggravation, the anchor pole being mounted in roadway surrounding rock start to play a role, and control roadway deformation.When the deformability of country rock exceeds
When energy-absorbing erosion control element bearing capacity, energy-absorbing erosion control component resigning energy-absorbing provides deformation space for country rock.
(3) in country rock blastic deformation --- energy-absorbing of quickly stepping down
When impact occurs, elastic energy that abrupt release is largely gathered.At this point, energy-absorbing erosion control component is under impact loading
It realizes quick resigning energy-absorbing, reduces shock wave in the reflection on tunnel surface layer, to effectively mitigate shock reflection to roadway surrounding rock
Stretching action.
We have carried out impact test to resigning buffering energy-absorbing impact preventing anchor rod, Fig. 5 be resigning buffering energy-absorbing impact preventing anchor rod by
Force-displacement curve figure when impact force.Test result shows the constant-resistance device in resigning buffering energy-absorbing impact preventing anchor rod by compression process
In have constant bearing capacity.When this illustrates that the tunnel of resigning buffering energy-absorbing impact preventing anchor rod supporting is hit, resigning buffering energy-absorbing
Impact preventing anchor rod can effectively guide the release and conversion of control impact energy, by high energy in resigning buffering course, energy
The influence of impact dynamic load lotus is effectively resisted, guarantees the stabilization of roadway surrounding rock and support system.
Claims (2)
1. a kind of resigning buffering energy-absorbing impact preventing anchor rod, which is characterized in that including the body of rod (1), pallet (2), constant-resistance device (3) and nut
(4)；The right end of the body of rod (1) is provided with external screw thread block (5), and external screw thread, external screw thread area are provided on external screw thread block (5)
Block (5) is with the body of rod (1) using being integrated, and pallet (2) is provided centrally with body of rod mounting hole, and the body of rod (1) passes through in pallet (2)
The mounting hole of heart setting, the right end of the external screw thread block (5) are equipped with nut (4), and the constant-resistance device (3) is arranged in pallet
(2) and the centre of nut (4), constant-resistance device (3) have thin-wall circular tube structure, perforation among constant-resistance device (3), the constant-resistance device (3)
It covers on the body of rod (1), the nut (4) includes rotary table block (6), annulus block (7) and square blocks (8), the rotary table area
Block (6), annulus block (7) and square blocks (8) are inserted into constant-resistance device (3) on the left of rotary table block (6) using being integrated
In inner hole, the diameter of the right circles of the rotary table block (6) is equal to the diameter of annulus block (7), the squared region
Block (8) setting is 150~200mm in the right side of annulus block (7), the length range of the constant-resistance device (3), constant-resistance device (3)
Internal bore radius range is 16~20mm, and the thickness range of constant-resistance device (3) tube wall is 3~5mm.
2. resigning buffering energy-absorbing impact preventing anchor rod according to claim 1, which is characterized in that be provided in the nut (4)
Internal screw thread, nut (4) are fitted on external screw thread block (5) by internal screw thread with externally threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611069021.4A CN108119175B (en) | 2016-11-29 | 2016-11-29 | A kind of resigning buffering energy-absorbing impact preventing anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611069021.4A CN108119175B (en) | 2016-11-29 | 2016-11-29 | A kind of resigning buffering energy-absorbing impact preventing anchor rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108119175A CN108119175A (en) | 2018-06-05 |
| CN108119175B true CN108119175B (en) | 2019-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611069021.4A Active CN108119175B (en) | 2016-11-29 | 2016-11-29 | A kind of resigning buffering energy-absorbing impact preventing anchor rod |
Country Status (1)
| Country | Link |
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| CN (1) | CN108119175B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630305A (en) * | 2019-11-05 | 2019-12-31 | 兰州交通大学 | Controllable pressure stock that lets in tunnel |
| CN110905571A (en) * | 2019-12-18 | 2020-03-24 | 辽宁工程技术大学 | Diameter-expanding type energy absorption device for straight-line pipe |
| CN111472825B (en) * | 2020-04-22 | 2021-12-28 | 辽宁工程技术大学 | Automatic anchoring pre-tightening energy-absorbing anchor rod |
| CN111946376B (en) * | 2020-08-20 | 2021-09-17 | 中国科学院武汉岩土力学研究所 | Preparation method of anchor rod stretching damper and anchor rod stretching damper |
| CN113653522A (en) * | 2021-09-16 | 2021-11-16 | 河海大学 | Self-tapping type yielding anchor rod capable of controlling large deformation of soft rock and having displacement monitoring function |
| CN115182765B (en) * | 2022-09-14 | 2022-12-02 | 北京中矿创新联盟能源环境科学研究院 | Slip casting NPR anchor cable |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858225B (en) * | 2010-06-10 | 2011-10-12 | 北京中矿深远能源环境科学研究院 | Constant resistance and large deformation anchor rod |
| CN102678148B (en) * | 2012-04-25 | 2014-11-12 | 山东科技大学 | Novel high-strength constant-resistance large deformation anchor rod and using method thereof |
| CN103016035B (en) * | 2012-12-27 | 2014-12-03 | 辽宁工程技术大学 | Abdicating buffer energy-absorbing shock-proof anchor rod cable for coal mine |
| CN203296794U (en) * | 2013-04-25 | 2013-11-20 | 安徽理工大学 | Yielding extensible fiber reinforced plastic anchor rod |
| CN104963710A (en) * | 2015-07-16 | 2015-10-07 | 尤洛卡（山东）深部地压防治安全技术有限公司 | Hollow grouting anchor rod with anti-shock constant-resistance performance and using method thereof |
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2016
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| Publication number | Publication date |
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| CN108119175A (en) | 2018-06-05 |
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