CN113417680A - Anti-anchoring agent rollback piston, anchor rod and method - Google Patents
Anti-anchoring agent rollback piston, anchor rod and method Download PDFInfo
- Publication number
- CN113417680A CN113417680A CN202110801094.2A CN202110801094A CN113417680A CN 113417680 A CN113417680 A CN 113417680A CN 202110801094 A CN202110801094 A CN 202110801094A CN 113417680 A CN113417680 A CN 113417680A
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- China
- Prior art keywords
- piston
- anchoring agent
- agent
- anchor
- bolt
- 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.)
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Links
- 238000004873 anchoring Methods 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 77
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 238000003756 stirring Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims description 26
- 239000011347 resin Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 13
- 238000005553 drilling Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000006748 scratching Methods 0.000 abstract description 2
- 230000002393 scratching effect Effects 0.000 abstract description 2
- 238000012856 packing Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Images
Classifications
-
- 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
- E21D20/025—Grouting with organic components, e.g. resin
-
- 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
- E21D20/028—Devices or accesories for injecting a grouting liquid in a bore-hole
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)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses an anti-anchoring agent rollback piston, an anchor rod and a method, wherein the anti-anchoring agent rollback piston comprises a bolt, a spring buckle arranged on the bolt, two sealing washers and a nut, wherein: the spring buckle sets up the tail end at the bolt, sets up first nut between two seal ring, sets up the second nut at the head of bolt. The piston can prevent the anchoring agent from flowing back into the rod and avoid the reduction of the anchoring length; the problem that the anchoring agent flows back to enter the interior of the rod body is solved by adopting a spring buckle mode, the structure is simple, and the effect is stable and reliable; the double-layer sealing can effectively seal high-pressure water and keep the piston rod centered, so that the piston is prevented from being eccentric in the rod to influence the use; the barb of the spring buckle is beneficial to scratching the anchoring agent in the process of stirring the anchoring agent, so that the stirring effect of the anchoring agent is improved; the piston sealing structure adopts an isolated double-rubber flat gasket, so that on one hand, when the size of the inner hole of the anchor rod floats, the piston and the inner hole of the rod body can be well matched without influencing sealing.
Description
Technical Field
The invention relates to an anti-anchoring agent rollback piston, an anchor rod and a method.
Background
As shown in fig. 1, a conventional bolt assembly with a built-in resin anchoring agent has a structure including: the anchor rod comprises a rubber plug 11, a thrust ring 12, a resin anchoring agent 13, a rod body 14, a sealing piston 15, a disc-shaped tray 16, a hexagonal nut 17 and the like, wherein when anchoring is carried out, the rod body 14 is placed into an anchor hole, the sealing piston 15 in the rod body is pushed by high-pressure water to push out the bagged resin anchoring agent 13 from the rod body, the anchoring agent enters the anchor hole, then a drill sleeve drives the anchor rod body to rotate and push the anchor rod body to the bottom of the anchor hole, in the process, the resin anchoring agent 13 is broken through and stirred while the anchor rod is pushed, and the nut is screwed after the anchoring agent is solidified to complete anchor rod installation. In the actual installation process of the anchor rod with the built-in resin anchoring agent, the internal sealing piston 15 is easily extruded by the anchoring agent to return into the rod body in the stirring process, so that the anchoring agent flows back into the rod body 14, and the anchoring length is reduced. The anchoring agent generates reverse thrust to the piston in the process of stirring and propelling the rod body and crushing the anchoring agent, the piston does not have internal restraint at the inner end part of the rod and retreats after receiving the reverse thrust, so that the anchoring agent flows back, the effective length of anchoring is reduced, and the anchoring effect is influenced, as shown in figure 2.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides an anti-anchoring agent retraction piston, an anchoring rod and a method, which aim to solve the problem that the anchoring length of the existing anchoring rod with the built-in resin anchoring agent is reduced due to retraction of the piston in the anchoring process.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an prevent anchor agent backspace piston, includes bolt and the spring buckle, two seal ring and the nut of setting on the bolt, wherein: the spring buckle sets up the tail end at the bolt, sets up first nut between two seal ring, sets up the second nut at the head of bolt.
The invention also provides an anti-anchoring agent rollback anchor rod, wherein an anti-anchoring agent rollback piston is arranged in the hollow rod body, and comprises a bolt, a spring buckle arranged on the bolt, two sealing gaskets and a nut, wherein: the spring buckle sets up the tail end at the bolt, sets up first nut between two seal ring, sets up the second nut at the head of bolt.
The invention also provides a method for preventing the anchoring agent from returning, which comprises the following steps:
step one, when anchoring is carried out, a hollow rod body is placed into an anchor hole, then high-pressure water is injected into the hollow rod body, an anti-anchoring agent backspacing piston is pushed by the high-pressure water, and a resin anchoring agent is pushed out of the rod body and enters the anchor hole;
step two, simultaneously, as the anti-anchoring agent retreats the piston to reach the tail end of the rod body, the barb of the spring buckle extends out of the rod body and automatically pops open;
and step three, driving the anchor rod body to rotate and push the anchor rod body to the bottom of the anchor hole by the sleeve of the drilling machine, extruding and stirring the resin anchoring agent while pushing the anchor rod, and reversely pushing the spring buckle by the anchoring agent in the process of stirring the anchoring agent until the barb buckles the outer edge of the thrust ring to provide tension for the piston and prevent the piston from continuously returning so as to prevent the anchoring agent from returning into the rod body.
Compared with the prior art, the invention has the following positive effects:
(1) when the anchoring agent is stirred, the piston can prevent the anchoring agent from flowing back into the rod, so that the reduction of the anchoring length is avoided; the problem that the anchoring agent flows back to enter the interior of the rod body is solved by adopting a spring buckle mode, the structure is simple, and the effect is stable and reliable;
(2) the double-layer sealing can effectively seal high-pressure water and keep the piston rod centered, so that the piston is prevented from being eccentric in the rod to influence the use;
(3) the barb of the spring buckle is beneficial to scratching the anchoring agent in the process of stirring the anchoring agent, so that the stirring effect of the anchoring agent is improved;
(4) the piston sealing structure adopts an isolated double-rubber flat gasket, so that on one hand, when the size of the inner hole of the anchor rod floats, the piston and the inner hole of the rod body can be well matched without influencing sealing.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view of a conventional anchor rod with a built-in resin anchoring agent;
FIG. 2 is a schematic view of a prior art bolt with resin anchoring agent built in, with a piston pushed back into the bolt by the anchoring agent;
FIG. 3 is a schematic structural view of an anti-anchor agent withdrawal piston of the present invention;
FIG. 4 is a schematic structural view of a spring clip;
FIG. 5 is a schematic view of the seal advancement;
fig. 6 is a schematic view of an anti-rollback process.
Detailed Description
An anti-anchorage agent withdrawal piston, as shown in fig. 3, comprising: bolt 1, spring buckle 2, first metal washer 3, first rubber washer 4, second metal washer 5, first nut 6, third metal washer 7, second rubber washer 8, fourth metal washer 9, second nut 10 etc. wherein:
the bolt 1, the nuts (the first nut 6 and the second nut 10), the metal washers (the first metal washer 3, the second metal washer 5, the third metal washer 7 and the fourth metal washer 9) and the spring buckle 5 are made of metal materials, and the rubber washers (the first rubber washer 4 and the second rubber washer 8) are made of rubber products.
The anti-rollback piston is assembled by a bolt, a rubber washer, a nut, a metal washer and a spring buckle, and the specific assembling method comprises the following steps: a spring buckle 2, a first metal washer 3, a first rubber washer 4, a second metal washer 5, a first nut 6, a third metal washer 7, a second rubber washer 8, a fourth metal washer 9 and a second nut 10 are sequentially assembled on the bolt 1.
The two rubber gaskets (first rubber gasket 4 and second rubber gasket 8) are mainly used to keep the piston centered and seal against moisture.
First rubber packing ring 4 is cliied to first metal packing ring 3 and second metal packing ring 5 to and second rubber packing ring 8 is cliied to third metal packing ring 7 and fourth metal packing ring 9, with the cooperation size of guaranteeing two rubber packing rings and body of rod hole, thereby form two seal ring, seal water vapour better. Further, the two sealing gaskets form two sealing rings to separate high pressure water from the anchoring agent and convert the water pressure into kinetic energy for propelling the anchoring agent.
The first nut 6 serves to space the two sealing gaskets from each other, preventing the piston from deflecting inside the rod, causing the piston seal to fail or seize.
The second nut 10 is used to fasten the piston assembly (the spring catch 2, the first metal washer 3, the first rubber washer 4, the second metal washer 5, the first nut 6, the third metal washer 7, the second rubber washer 8, the fourth metal washer 9) to the bolt 1.
In order to solve the problem that the piston is pushed back by the anchoring agent, a spring buckle 2 is added at the end part of the piston, and the structure is shown in figure 4. The barb of the spring buckle automatically springs open after passing through the thrust collar to buckle the outer edge of the thrust collar, and when the piston is pushed reversely by the anchoring agent, the piston is not pushed into the rod.
The working principle of the anti-anchoring agent rollback piston is as follows:
when high-pressure water 21 is injected into the hollow rod body of the anchor rod, the anti-anchoring agent retraction piston 22 is pushed by the high-pressure water, the anti-retraction piston pushes the resin anchoring agent 13 into the anchor hole from the anchor rod body (at the moment, the anchoring agent is not broken), and the sealing and pushing process is shown in fig. 5.
The specific anti-rollback process comprises the following steps: when the piston reaches the tail end of the rod body, the barb of the spring buckle 2 extends out of the rod body and automatically springs open as shown in the first and second images of fig. 6; in the process of stirring the anchoring agent, the spring buckle is reversely pushed by the anchoring agent, and the barb buckles the outer edge of the thrust collar, as shown in the third and fourth of fig. 6; providing tension for the piston and preventing the anchoring agent from backing into the rod body.
Claims (10)
1. An anti-anchoring agent rollback piston is characterized in that: including bolt and the spring buckle of setting on the bolt, two seal ring and nut, wherein: the spring buckle sets up the tail end at the bolt, sets up first nut between two seal ring, sets up the second nut at the head of bolt.
2. The anti-anchor agent retreat piston according to claim 1, wherein: the two sealing gaskets have the same structure and are formed by clamping a rubber gasket by two metal gaskets.
3. The anti-anchor agent retreat piston according to claim 2, wherein: the diameter of the rubber gasket is larger than that of the metal gasket.
4. The anti-anchor agent retreat piston according to claim 1, wherein: the free end of the spring catch has a barb.
5. The utility model provides an prevent anchoring agent backspacing stock which characterized in that: set up in the cavity internal setting of pole and prevent anchor agent backspacing piston, prevent anchor agent backspacing piston including the bolt and set up spring buckle, two seal ring and the nut on the bolt, wherein: the spring buckle sets up the tail end at the bolt, sets up first nut between two seal ring, sets up the second nut at the head of bolt.
6. The anti-anchorage agent backspacing anchor rod according to claim 5, characterized in that: the two sealing gaskets have the same structure and are formed by clamping a rubber gasket by two metal gaskets.
7. The anti-anchorage agent withdrawal anchor rod according to claim 6, wherein: the diameter of the rubber gasket is larger than that of the metal gasket.
8. The anti-anchorage agent backspacing anchor rod according to claim 5, characterized in that: the free end of the spring catch has a barb.
9. A method of preventing anchor agent recession, comprising: the method comprises the following steps:
step one, when anchoring is carried out, a hollow rod body is placed into an anchor hole, then high-pressure water is injected into the hollow rod body, an anti-anchoring agent backspacing piston is pushed by the high-pressure water, and a resin anchoring agent is pushed out of the rod body and enters the anchor hole;
step two, simultaneously, as the anti-anchoring agent retreats the piston to reach the tail end of the rod body, the barb of the spring buckle extends out of the rod body and automatically pops open;
and step three, driving the anchor rod body to rotate and push the anchor rod body to the bottom of the anchor hole by the sleeve of the drilling machine, extruding and stirring the resin anchoring agent while pushing the anchor rod, and reversely pushing the spring buckle by the anchoring agent in the process of stirring the anchoring agent until the barb buckles the outer edge of the thrust ring to provide tension for the piston and prevent the piston from continuously returning so as to prevent the anchoring agent from returning into the rod body.
10. The method of preventing anchor withdrawal of claim 9, wherein: in the anchoring agent stirring process, the barb of the spring buckle cuts through the anchoring agent, so that the stirring effect of the anchoring agent is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110801094.2A CN113417680B (en) | 2021-07-15 | 2021-07-15 | Anti-anchoring agent rollback piston, anchor rod and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110801094.2A CN113417680B (en) | 2021-07-15 | 2021-07-15 | Anti-anchoring agent rollback piston, anchor rod and method |
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| Publication Number | Publication Date |
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| CN113417680A true CN113417680A (en) | 2021-09-21 |
| CN113417680B CN113417680B (en) | 2022-06-28 |
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Citations (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH677263A5 (en) * | 1988-01-25 | 1991-04-30 | Hans Joerg Thoeny | Releasable coupler for two components |
| CA2172231A1 (en) * | 1995-03-21 | 1996-09-22 | Raymond Scott Laughlin | Box hanger and method |
| JPH10159353A (en) * | 1996-11-28 | 1998-06-16 | Daitetsu Kogyo Kk | Reinforcing method for existing structure, and jig for preventing leakage of anchoring agent used for the method |
| WO2004055326A1 (en) * | 2002-12-17 | 2004-07-01 | Lms Geotechnical Pty Ltd | An apparatus and method to anchor a rock bolt |
| AU2007203613A1 (en) * | 2006-08-02 | 2008-02-21 | Minova Australia Pty Limited | Resin Cartridge Insertion Method & Apparatus |
| CN201632387U (en) * | 2009-12-15 | 2010-11-17 | 奇瑞汽车股份有限公司 | Fixing auxiliary tool for painting pretreatment of front cover of minicar |
| WO2012167308A1 (en) * | 2011-06-07 | 2012-12-13 | Fci Holdings Delaware, Inc | Improvements in self-drilling rock bolts |
| CN106121695A (en) * | 2016-07-29 | 2016-11-16 | 安徽理工大学 | A kind of self-drilling type swollen shell automatic clamping hollow grouting anchor |
| CN205890863U (en) * | 2016-08-04 | 2017-01-18 | 安思通（厦门）制动科技有限公司 | Total pump piston structure of improvement |
| CN107034880A (en) * | 2017-06-11 | 2017-08-11 | 贵州大学 | A kind of fluking type grouted rock bolt |
| CN109184764A (en) * | 2018-11-01 | 2019-01-11 | 河南理工大学 | The anchor rod anchored stirring attachment device of quick detachable automatic centering and its operating method |
| CN109356629A (en) * | 2018-11-09 | 2019-02-19 | 成都理工大学 | A kind of application method of large deformation release shock resistance anchor pole |
| CN109653781A (en) * | 2018-12-11 | 2019-04-19 | 河南理工大学 | Resin anchoring agent broken bag agitating device and its broken bag stirring means |
| CN109779664A (en) * | 2019-03-29 | 2019-05-21 | 攀枝花学院 | Drilling anchor high-pressure slip-casting integration resin anchor |
| CN109778603A (en) * | 2017-11-13 | 2019-05-21 | 李光泽 | A kind of high-speed rail railroad track dedicated retaining check washer, nuts and bolt |
| CN109882226A (en) * | 2019-04-13 | 2019-06-14 | 张亚歌 | A kind of tensioning locking anchor pole |
| CN110984144A (en) * | 2019-12-20 | 2020-04-10 | 中国科学院武汉岩土力学研究所 | Prestressed hollow anchor rod reinforcing system |
| CN111472823A (en) * | 2020-04-14 | 2020-07-31 | 中国矿业大学 | Large-deformation quantitative yielding anchor rod device and using method thereof |
| CN211173513U (en) * | 2019-11-22 | 2020-08-04 | 无锡地铁集团有限公司运营分公司 | Anti-falling, anti-backing and locking device for magnetic lock armature |
| CN111878133A (en) * | 2020-08-13 | 2020-11-03 | 中铁隆昌铁路器材有限公司 | Integrated resin anchor rod assembly and mounting method thereof |
| CN111927511A (en) * | 2020-07-29 | 2020-11-13 | 安徽理工大学 | Steel pipe anchor cable end blasting and grouting combined supporting method and system |
| 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 |
| CN212296436U (en) * | 2020-08-13 | 2021-01-05 | 中铁隆昌铁路器材有限公司 | Integrated resin anchor rod assembly with thrust ring |
| CN212296435U (en) * | 2020-08-13 | 2021-01-05 | 中铁隆昌铁路器材有限公司 | Integrated resin anchor rod assembly |
| CN112253198A (en) * | 2020-09-25 | 2021-01-22 | 中铁隆昌铁路器材有限公司 | Composite hollow anchor rod assembly and mounting method thereof |
| CN112343635A (en) * | 2020-11-04 | 2021-02-09 | 中铁隆昌铁路器材有限公司 | Mining composite hollow resin anchor rod assembly and mounting method thereof |
| CN212563288U (en) * | 2020-08-13 | 2021-02-19 | 中铁隆昌铁路器材有限公司 | Integrated resin anchor rod assembly with novel spherical nut |
| CN112664250A (en) * | 2020-12-29 | 2021-04-16 | 安徽理工大学 | Vertical shaft well soil body reinforcing anchor rod and construction method thereof |
| CN213419138U (en) * | 2020-09-25 | 2021-06-11 | 中铁隆昌铁路器材有限公司 | Composite hollow anchor rod assembly |
| CN215804630U (en) * | 2021-07-15 | 2022-02-11 | 中铁隆昌铁路器材有限公司 | Anti-anchoring agent backspacing piston and anchor rod |
-
2021
- 2021-07-15 CN CN202110801094.2A patent/CN113417680B/en active Active
Patent Citations (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH677263A5 (en) * | 1988-01-25 | 1991-04-30 | Hans Joerg Thoeny | Releasable coupler for two components |
| CA2172231A1 (en) * | 1995-03-21 | 1996-09-22 | Raymond Scott Laughlin | Box hanger and method |
| JPH10159353A (en) * | 1996-11-28 | 1998-06-16 | Daitetsu Kogyo Kk | Reinforcing method for existing structure, and jig for preventing leakage of anchoring agent used for the method |
| WO2004055326A1 (en) * | 2002-12-17 | 2004-07-01 | Lms Geotechnical Pty Ltd | An apparatus and method to anchor a rock bolt |
| AU2007203613A1 (en) * | 2006-08-02 | 2008-02-21 | Minova Australia Pty Limited | Resin Cartridge Insertion Method & Apparatus |
| CN201632387U (en) * | 2009-12-15 | 2010-11-17 | 奇瑞汽车股份有限公司 | Fixing auxiliary tool for painting pretreatment of front cover of minicar |
| WO2012167308A1 (en) * | 2011-06-07 | 2012-12-13 | Fci Holdings Delaware, Inc | Improvements in self-drilling rock bolts |
| CN106121695A (en) * | 2016-07-29 | 2016-11-16 | 安徽理工大学 | A kind of self-drilling type swollen shell automatic clamping hollow grouting anchor |
| CN205890863U (en) * | 2016-08-04 | 2017-01-18 | 安思通（厦门）制动科技有限公司 | Total pump piston structure of improvement |
| CN107034880A (en) * | 2017-06-11 | 2017-08-11 | 贵州大学 | A kind of fluking type grouted rock bolt |
| CN109778603A (en) * | 2017-11-13 | 2019-05-21 | 李光泽 | A kind of high-speed rail railroad track dedicated retaining check washer, nuts and bolt |
| CN109184764A (en) * | 2018-11-01 | 2019-01-11 | 河南理工大学 | The anchor rod anchored stirring attachment device of quick detachable automatic centering and its operating method |
| CN109356629A (en) * | 2018-11-09 | 2019-02-19 | 成都理工大学 | A kind of application method of large deformation release shock resistance anchor pole |
| CN109653781A (en) * | 2018-12-11 | 2019-04-19 | 河南理工大学 | Resin anchoring agent broken bag agitating device and its broken bag stirring means |
| CN109779664A (en) * | 2019-03-29 | 2019-05-21 | 攀枝花学院 | Drilling anchor high-pressure slip-casting integration resin anchor |
| CN109882226A (en) * | 2019-04-13 | 2019-06-14 | 张亚歌 | A kind of tensioning locking anchor pole |
| CN211173513U (en) * | 2019-11-22 | 2020-08-04 | 无锡地铁集团有限公司运营分公司 | Anti-falling, anti-backing and locking device for magnetic lock armature |
| CN110984144A (en) * | 2019-12-20 | 2020-04-10 | 中国科学院武汉岩土力学研究所 | Prestressed hollow anchor rod reinforcing system |
| CN111472823A (en) * | 2020-04-14 | 2020-07-31 | 中国矿业大学 | Large-deformation quantitative yielding anchor rod device and using method thereof |
| CN111927511A (en) * | 2020-07-29 | 2020-11-13 | 安徽理工大学 | Steel pipe anchor cable end blasting and grouting combined supporting method and system |
| CN111878133A (en) * | 2020-08-13 | 2020-11-03 | 中铁隆昌铁路器材有限公司 | Integrated resin anchor rod assembly and mounting method thereof |
| CN212296436U (en) * | 2020-08-13 | 2021-01-05 | 中铁隆昌铁路器材有限公司 | Integrated resin anchor rod assembly with thrust ring |
| CN212296435U (en) * | 2020-08-13 | 2021-01-05 | 中铁隆昌铁路器材有限公司 | Integrated resin anchor rod assembly |
| CN212563288U (en) * | 2020-08-13 | 2021-02-19 | 中铁隆昌铁路器材有限公司 | Integrated resin anchor rod assembly with novel spherical nut |
| 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 |
| CN112253198A (en) * | 2020-09-25 | 2021-01-22 | 中铁隆昌铁路器材有限公司 | Composite hollow anchor rod assembly and mounting method thereof |
| CN213419138U (en) * | 2020-09-25 | 2021-06-11 | 中铁隆昌铁路器材有限公司 | Composite hollow anchor rod assembly |
| CN112343635A (en) * | 2020-11-04 | 2021-02-09 | 中铁隆昌铁路器材有限公司 | Mining composite hollow resin anchor rod assembly and mounting method thereof |
| CN112664250A (en) * | 2020-12-29 | 2021-04-16 | 安徽理工大学 | Vertical shaft well soil body reinforcing anchor rod and construction method thereof |
| CN215804630U (en) * | 2021-07-15 | 2022-02-11 | 中铁隆昌铁路器材有限公司 | Anti-anchoring agent backspacing piston and anchor rod |
Non-Patent Citations (6)
| Title |
|---|
| MANCHAO HE，ETC: ""Development of a novel energy-absorbing bolt with extraordinarily large elongation and constant resistance"", 《INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES》 * |
| 吴彤，等: ""我国煤矿锚杆技术发展现状及改进策略研究"", 《现代物业》 * |
| 孔令喜，等: ""软岩大变形地质条件下的让压支护体系试验研究"", 《地下空间与工程学报 》 * |
| 李昌源，等: ""法国锚杆技术"", 《国外公路》 * |
| 王贺，等: ""我国大变形锚杆研究现状及发展趋势 "", 《黄金科学技术》 * |
| 罗会军: ""挤土式土层锚杆的设计与试验研究"", 《中国优秀硕士论文全文库工程科技I辑》 * |
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