CN110331998A - A kind of adaptive pressure release type grouted anchor bar - Google Patents
A kind of adaptive pressure release type grouted anchor bar Download PDFInfo
- Publication number
- CN110331998A CN110331998A CN201910672607.7A CN201910672607A CN110331998A CN 110331998 A CN110331998 A CN 110331998A CN 201910672607 A CN201910672607 A CN 201910672607A CN 110331998 A CN110331998 A CN 110331998A
- Authority
- CN
- China
- Prior art keywords
- anchor bar
- bar body
- anchor
- stop grouting
- grouting plug
- 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
- 230000003044 adaptive effect Effects 0.000 title claims abstract description 20
- 239000011435 rock Substances 0.000 claims abstract description 23
- 239000002002 slurry Substances 0.000 claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000002955 isolation Methods 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 37
- 239000010959 steel Substances 0.000 claims description 37
- 238000004873 anchoring Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 6
- 238000007569 slipcasting Methods 0.000 description 6
- 239000004568 cement Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
-
- 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
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)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of adaptive pressure release type grouted anchor bar, the bolt anchorage ability in the prior art that overcomes has problem to be hoisted.The invention contains anchor bar body, self-adapting locking device, injected hole, stop grouting plug, stop grouting plug backing plate, fastening nut and stifled slurry plug, wherein anchor bar body is hollow tube, anchor bar body is socketed in self-adapting locking device, anchor bar body is socketed in the one side wall in rock equipped with injected hole, after anchor bar body stretches out the middle part that the side outside rock passes through stop grouting plug and stop grouting plug backing plate, then after being socketed self-adapting locking device, it is fixedly connected by fastening nut, the end of anchor bar body is equipped with stifled slurry plug.The self-adapting locking device contains locking wedge mechanism, upper bush, isolation rubber ring, positioning lower sleeve, stop grouting plug nut, spiral shell pad and spring.Upper bush unloads protrusion by machining anchor bar body in advance and carries out pressure release to anchor bar body in the technology, effectively controls country rock large deformation, improves anchoring efficiency, meet the requirement of bolt support technology in the geotechnical engineering of deep.
Description
Technical field
The present invention relates to the reinforcement protection fields in geotechnical engineering, more particularly to a kind of adaptive pressure release type slip casting anchor
Bar.
Background technique
With being continuously increased for Global Mineral mining depth, various Geological Hazards are increasing, as mine rushes
It presses with hitting and causes grave danger with safety and high efficiency of the disasters such as soft rock large deformation to deep resource.Using conventional anchor branch
The tunnel of shield is far from the instantaneous large deformation impact load of rock burst generation is resisted, to the thing of anchor pole fracture, tunnel damage occur
Therefore.
At present in underground engineering support, weak back is usually suspended to upper layer by anchor pole and is stablized in rock stratum,
The anchoring of termination point of anchor rod mostly uses resin anchoring agent in engineering, but with the growth of the tunnel length of service, anchored end failure is asked
Topic happens occasionally, once and Anchor Agent failure, anchor pole just lose effect, will cause huge life, property loss, therefore pole
Need one kind that can enhance the anchor pole of end anchorage.
Summary of the invention
The present invention overcomes bolt anchorage abilities in the prior art problem to be hoisted, provide it is a kind of structurally reasonable plus
Gu the good adaptive pressure release type grouted anchor bar of effect.
The technical solution of the invention is as follows, provides a kind of adaptive pressure release type grouted anchor bar having following structure: containing
There are anchor bar body, self-adapting locking device, injected hole, stop grouting plug, stop grouting plug backing plate, fastening nut and stifled slurry plug, wherein anchor bar body
For hollow tube, anchor bar body is socketed in self-adapting locking device, and anchor bar body is socketed in the one side wall in rock and is equipped with injected hole,
After anchor bar body stretches out the middle part that the side outside rock passes through stop grouting plug and stop grouting plug backing plate, then after being socketed self-adapting locking device,
It is fixedly connected by fastening nut, the end of anchor bar body is equipped with stifled slurry plug.
Preferably, the self-adapting locking device contain locking wedge mechanism, upper bush, isolation rubber ring, positioning lower sleeve,
Stop grouting plug nut, spiral shell pad and spring, wherein upper bush is socketed in outside anchor bar body close to the side of locking wedge mechanism, in the middle part of upper bush
After anchor bar body socket, anchor pole external surface herein is successively socketed with isolation rubber ring from inside to outside and is located at anchor bar body appearance
Multiple pre- unloading protrusions in face, the other side opening inner side of upper bush set are socketed one end of positioning lower sleeve, positioning by screw thread
After the other end of lower sleeve passes through the middle part of stop grouting plug and stop grouting plug backing plate, stop grouting plug nut is threadedly engaged by what be which is provided with
Stop grouting plug backing plate is fastened, anchor bar body end is equipped with screw thread and matches fastening nut, between fastening nut and the end for positioning lower sleeve
Anchor bar body on be socketed with spiral shell pad and spring.
Preferably, the locking wedge mechanism contains anchor pole head, wedge shape just block, positioning adjusting steel disc and steel disc fixed ring,
Wherein anchor pole head is located at the end that anchor bar body is located at side in rock, and wedge shape is just equipped with multi-disc positioning and adjusts between block and upper bush
Steel disc is saved, the bottom that positioning adjusts steel disc is fixed in steel disc fixed ring, and the piece number that positioning adjusts steel disc is 2-10, and anchor pole head is
Rotary table, bevel cone, terrace with edge or truncated pyramid, just block is more equal parts and hollow rotary table, bevel cone, terrace with edge to wedge shape
Or truncated pyramid, just the halved number of block is the just lesser side of ingot diameter 2-10, wherein anchor pole head and wedge shape to wedge shape
Opposite to each other, positioning adjusts steel disc and the rigid block of wedge shape is connected as one one by one.
Preferably, the lateral surface of the wedge-shaped bloom body is equipped with line tooth.
Preferably, the pre- unloading protrusion is square body, cylindrical body or trigone, is uniformly divided along anchor bar body circumferential direction
Cloth.
Preferably, screw thread is equipped with outside the anchor bar body, anchor bar body inner hollow, anchor bar body top is equipped with injected hole, anchor
After the body of rod is installed, injected hole is between upper bush and steel disc fixed ring.
Preferably, the spring is high rigidity spring.
Compared with prior art, the adaptive pressure release type grouted anchor bar of the present invention has the advantage that is squeezed by anchor bar body
The rigid block of wedge shape makes it form extruding to drill hole inner wall and has the function that fastening, and the line tooth of the rigid block bevel edge of wedge shape ensure that anchor
Gu in the case that agent is failed, anchor pole still can provide enough end anchorage power by wedge-shaped just block, enhance anchor pole and rock
The anchoring effect of body.
Upper bush is snapped down to anchor bar body and unloads high spot stopping in advance, and injected hole is exposed at this time, can carry out slip casting, when country rock becomes
Shape is excessive, and when acting on that load is excessive on casing, upper bush unload protrusion to anchor bar body progress pressure release by machining anchor bar body in advance,
It avoids anchor bar body from being pulled off, is unable to pressure release when the active force deficiency acted on upper bush, effectively controls surrouding rock deformation.End
Portion's spring applies prestressing force by the downslide of upper bush, and upper bush is bigger along anchor bar body downslide amount, and spring stress is bigger, anchor pole head
It is stronger to the pressurization of the rigid block of wedge shape and drill hole inner wall, to improve termination point of anchor rod anchor force, while effectively controlling country rock
Large deformation improves anchoring efficiency, meets the requirement of bolt support technology in the geotechnical engineering of deep.
Detailed description of the invention
Fig. 1 is schematic cross-sectional view when adaptive pressure release type grouted anchor bar of the invention does not fasten installation；
Fig. 2 is the schematic cross-sectional view after adaptive pressure release type grouted anchor bar fastening installation of the invention；
Fig. 3 is the schematic diagram of the section structure of upper bush and positioning lower sleeve in adaptive pressure release type grouted anchor bar of the invention；
Fig. 4 is the section figure structure schematic representation of the position A-A ' in adaptive pressure release type grouted anchor bar Fig. 1 of the invention；
Fig. 5 is the section figure structure schematic representation of the position B-B ' in adaptive pressure release type grouted anchor bar Fig. 1 of the invention.
Specific embodiment
Label 1 is anchor pole head in Detailed description of the invention, and 2 be anchor bar body, and 3 be upper bush, and 4 be the rigid block of wedge shape, and 5 be that steel disc is fixed
Ring, 6 be that positioning adjusts steel disc, and 7 be injected hole, and 8 be isolation rubber ring, and 9 be stop grouting plug, and 10 be stop grouting plug backing plate, and 11 be spiral shell pad,
12 be stop grouting plug nut, and 13 be fastening nut, and 14 be spring, and 15 be stifled slurry plug, and 16 be screw thread, and 17 be positioning lower sleeve, and 18 are
Pre- unloading protrusion, 19 be cement slurry.
The adaptive pressure release type grouted anchor bar of the present invention is described further with reference to the accompanying drawings and detailed description: such as
Shown in figure, anchor bar body 2, self-adapting locking device, injected hole 7, stop grouting plug 9, stop grouting plug backing plate 10, fastening are contained in the present embodiment
Nut 13 and stifled slurry plug 15, wherein anchor bar body 2 is hollow tube, and anchor bar body 2 is socketed in self-adapting locking device, 2 sets of anchor bar body
It connects and is equipped with injected hole 7 in the one side wall in rock, the side that anchor bar body 2 stretches out outside rock passes through stop grouting plug 9 and stop grouting plug pad
Behind the middle part of plate 10, then after being socketed self-adapting locking device, it is fixedly connected by fastening nut 13, the end of anchor bar body 2 is equipped with
Stifled slurry plug 15.
Burr or screw thread are wherein equipped with outside anchor bar body 2, for enhancing and the tautness of cement slurry after molding, anchor bar body
2 inner hollows, 2 top of anchor bar body are equipped with injected hole 7, and pre- unloading protrusion 18 is equipped in the middle part of anchor bar body 2, circumferential along anchor bar body 2
Even distribution is socketed with upper bush 3 outside anchor bar body 2, and upper bush 3 can move up and down on anchor bar body 2, and upper bush 3 passes through cutting
The pre- unloading protrusion 18 of corresponding number avoids anchor bar body to carry out pressure release to the displacement that anchor bar body 2 is generated when rock loosens
2 are pulled off, and improve anchoring efficiency, are unable to pressure release when the active force deficiency acted on upper bush 3, effectively control country rock
Deformation.
The self-adapting locking device contains locking wedge mechanism, upper bush 3, isolation rubber ring 8, positioning lower sleeve 17, stops
Slurry plug nut 12, spiral shell pad 11 and spring 14, wherein upper bush 3 is socketed in outside anchor bar body 2 close to the side of locking wedge mechanism, upper set
After 3 middle part of cylinder and anchor bar body 2 are socketed, 2 outer surface of anchor bar body herein is successively socketed with isolation rubber ring 8 from inside to outside and is located at
Multiple pre- unloading protrusions 18 of 2 outer surface of anchor bar body, 3 sets of upper bush of other side opening inner side are trapped by screw thread socket positioning
One end of cylinder 17, after the other end of positioning lower sleeve 17 passes through the middle part of stop grouting plug 9 and stop grouting plug backing plate 10, by which is provided with
Screw thread 16 cooperate stop grouting plug nut 12 fasten stop grouting plug backing plate 10,2 end of anchor bar body be equipped with screw thread match fastening nut 13, tightly
Gu being socketed with spiral shell pad 11 and spring 14 on the anchor bar body 2 between nut 13 and the end for positioning lower sleeve 17.
Wherein upper bush 3 and positioning lower sleeve 17 are made of metal material, and positioning 17 end of lower sleeve is logical equipped with screw thread 16
It crosses stop grouting plug nut 12 and fastens stop grouting plug backing plate 10, upper bush 3 is divided into upper and lower two parts, 3 upper and lower part outer diameter of upper bush again
Equal, part internal diameter is equal to 2 outer diameter of anchor bar body on upper bush 3, the lower part internal diameter of upper bush 3 be equal to positioning 17 outer diameter of lower sleeve and
There is the maximum outside diameter at pre- unloading protrusion 18 greater than anchor bar body 2, when acting on upper bush 3 load and being greater than certain value, on
Part effectively can unload protrusion 18 by machining anchor bar body 2 in advance on sleeve 3, to play pressure release to anchor bar body 2 by the downslide of upper bush 3
Effect.
Wherein rubber pad is installed at 3 internal diameter change of upper bush, at slip casting initial stage to gap between upper bush 3 and anchor bar body 2
Play the role of temporary sealing, guarantees not influenced by cement slurry 19 when upper bush 3 can slide along anchor bar body 2.
The locking wedge mechanism contains anchor pole head 1, wedge shape, and just block 4, positioning adjust steel disc 6 and steel disc fixed ring 5, wherein
Anchor pole head 1 is located at the end that anchor bar body 2 is located at side in rock, and wedge shape is just equipped with multi-disc positioning and adjusts between block 4 and upper bush 3
Steel disc 6 is saved, the bottom that positioning adjusts steel disc 6 is fixed in steel disc fixed ring 5, and the piece number that positioning adjusts steel disc 6 is 2-10, anchor pole
First 1 is rotary table, bevel cone, terrace with edge or truncated pyramid, and just block 4 is more equal parts and hollow rotary table, bevel circular cone to wedge shape
Body, terrace with edge or truncated pyramid, just the halved number of block 4 is 2-10, wherein anchor pole head 1 and wedge shape just 4 diameter of block to wedge shape
Lesser side is relative to each other, and positioning adjusts steel disc 6 and wedge shape, and just block 4 is connected as one one by one.
Wherein steel disc fixed ring 5 is in circular ring shape, can be moved up and down on anchor bar body 2, adjusts steel disc 6 and wedge shape by positioning
Rigid block 4 welds, and steel disc fixed ring 5 moves up, and positioning adjusts steel disc 6 and wedge-shaped just block 4 is squeezed into drill hole inner wall and anchor pole
Between first 1.Positioning adjusts positioning under 6 free state of steel disc and adjusts steel disc 6 vertically, and is parallel to 2 axis direction of anchor bar body, wedge shape
Rigid block 4 is close to anchor bar body 2, and anchor bar body 2 applies active force and squeezes wedge-shaped just block 4 by anchor pole head 1, and positioning is caused to adjust steel
Piece 6 bends, and is close to 1 lower curved face of anchor pole head.
Wherein 1 surface of anchor pole head is smooth, and wedge-shaped just block 4 is facilitated to be extruded, and causes wedge-shaped just block 4 to drill hole inner wall shape
At squeezing action, enhance the anchoring effect of anchor pole and rock mass.
The lateral surface of the wedge shape bloom body is equipped with line tooth, enhances part by the extruding force and frictional force of drill hole inner wall
Anchoring effect.Upward, rigid 4 vertical long side of block of wedge shape adjusts steel disc 6, wedge by being welded to connect positioning to wedge-shaped just 4 wedge angle of block
The rigid 4 vertical long side surface of block of shape is smooth, small with frictional force when 1 following table face contact of anchor pole head, and wedge-shaped just block 4 is facilitated to pop up.
The pre- unloading protrusion 18 is square body, cylindrical body or trigone, is uniformly distributed along 2 circumferential direction of anchor bar body
Burr or screw thread, 2 inner hollow of anchor bar body are equipped with outside the anchor bar body 2,2 top of anchor bar body is equipped with injected hole 7,
After anchor bar body 2 is installed, injected hole 7 is between upper bush 3 and steel disc fixed ring 5.
The spring 14 is high rigidity spring 14.Wherein spring 14 is high rigidity spring 14, and spring 14 passes through stop grouting plug spiral shell
Mother 12 and spiral shell pad 11 are installed between positioning 17 end of lower sleeve and 2 end of anchor bar body, and anchor bar body 2 is passed through from 14 center of spring,
Spring 14 applies prestressing force by the downslide of upper bush 3, and upper bush 3 is bigger along 2 downslide amount of anchor bar body, and 14 stress of spring is bigger,
The pressurization of the rigid block 4 of 1 pair of wedge shape of anchor pole head and drill hole inner wall is stronger, to improve termination point of anchor rod anchor force, while effectively
Deformation controlling for rock surrounding gateways improves anchoring efficiency.
Isolation rubber ring 8 is first nested into top from the pre- unloading protrusion 18 in 2 middle part of anchor bar body from 2 front end of anchor bar body, then
The steel disc fixed ring 5 that steel disc 6 and the rigid block 4 of wedge shape are adjusted by upper bush 3, with positioning is successively nested into from 2 front end of anchor bar body
On anchor bar body 2, secondly positioning lower sleeve 17 is nested on anchor bar body 2 from 2 end of anchor bar body, upper bush 3 and positioning lower sleeve
17 are connected through a screw thread, then anchor pole head 1 is threadingly attached on anchor bar body 2, by steel disc fixed ring 5 after anchor bar body 2
It moves, just block 4 is close to anchor bar body 2 to wedge shape, and it is put into drilling, pushes up upper bush 3, while pulling down anchor bar body 2, upper bush 3
It pushes the rigid block 4 of wedge shape to move up to squeeze between anchor pole head 1 and drill hole inner wall, while squeezing wedge shape in 1 folding process of anchor pole head just
Block 4 stops loading when the pulling force acted on anchor bar body 2 reaches certain numerical value, and continues for some time rear off-load to zero,
Upper bush 3 is pulled down, stop grouting plug 9 and spiral shell pad 11 are installed, tightened with stop grouting plug nut 12, successively by spiral shell pad 11, spring 14, spiral shell pad 11
It is nested on anchor bar body 2 from 2 end of anchor bar body, tightens spring 14 with stop grouting plug nut 12, connection slip casting machine is opened by injected hole 7
Beginning slip casting is clogged after slip casting with stifled slurry plug 15.
Claims (7)
1. a kind of adaptive pressure release type grouted anchor bar, it is characterised in that: containing anchor bar body, self-adapting locking device, injected hole, stop
Slurry plug, stop grouting plug backing plate, fastening nut and stifled slurry plug, wherein anchor bar body is hollow tube, and anchor bar body is socketed in self-adapting locking dress
In setting, anchor bar body is socketed in the one side wall in rock equipped with injected hole, and the side that anchor bar body stretches out outside rock passes through stop grouting plug
Behind the middle part of stop grouting plug backing plate, then after being socketed self-adapting locking device, it is fixedly connected by fastening nut, the end of anchor bar body
It is filled in equipped with stifled slurry.
2. adaptive pressure release type grouted anchor bar according to claim 1, it is characterised in that: the self-adapting locking device contains
There are locking wedge mechanism, upper bush, isolation rubber ring, positioning lower sleeve, stop grouting plug nut, spiral shell pad and spring, wherein upper bush leans on
The side of nearly locking wedge mechanism is socketed in outside anchor bar body, in the middle part of upper bush and after anchor bar body socket, anchor pole external surface herein
It is successively socketed with isolation rubber ring from inside to outside and is located at multiple pre- unloading protrusions of anchor pole external surface, upper bush covers another
One end of positioning lower sleeve is socketed on the inside of side opening by screw thread, the other end for positioning lower sleeve passes through stop grouting plug and stop grouting plug pad
Behind the middle part of plate, stop grouting plug backing plate is fastened by the stop grouting plug nut that is threadedly engaged which is provided with, anchor bar body end is equipped with screw thread
Fastening nut is matched, is socketed with spiral shell pad and spring on the anchor bar body between fastening nut and the end for positioning lower sleeve.
3. adaptive pressure release type grouted anchor bar according to claim 2, it is characterised in that: the locking wedge mechanism contains anchor
Just block, positioning adjust steel disc and steel disc fixed ring for head, wedge shape, and wherein anchor pole head is located at anchor bar body and is located at side in rock
End, wedge shape are just equipped with multi-disc positioning and adjust steel disc between block and upper bush, the bottom that positioning adjusts steel disc is fixed on steel disc
In fixed ring, the piece number that positioning adjusts steel disc is 2-10, and anchor pole head is rotary table, bevel cone, terrace with edge or truncated pyramid, wedge shape
Rigid block is more equal parts and hollow rotary table, bevel cone, terrace with edge or truncated pyramid, and just the halved number of block is wedge shape
2-10, wherein anchor pole head and wedge shape just the lesser side of ingot diameter it is relative to each other, positioning adjust steel disc and wedge shape just block by
One is connected as one.
4. adaptive pressure release type grouted anchor bar according to claim 3, it is characterised in that: the outside of the wedge shape bloom body
Face is equipped with line tooth.
5. adaptive pressure release type grouted anchor bar according to claim 2, it is characterised in that: the pre- unloading protrusion is rectangular
Body, cylindrical body or trigone are uniformly distributed along anchor bar body circumferential direction.
6. adaptive pressure release type grouted anchor bar according to claim 2, it is characterised in that: be equipped with spiral shell outside the anchor bar body
Line, anchor bar body inner hollow, anchor bar body top are equipped with injected hole, and after anchor bar body is installed, injected hole is located at upper bush and steel
Between piece fixed ring.
7. adaptive pressure release type grouted anchor bar according to claim 2, it is characterised in that: the spring is high rigidity bullet
Spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910672607.7A CN110331998B (en) | 2019-07-24 | 2019-07-24 | Self-adaptive pressure relief type grouting anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910672607.7A CN110331998B (en) | 2019-07-24 | 2019-07-24 | Self-adaptive pressure relief type grouting anchor rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110331998A true CN110331998A (en) | 2019-10-15 |
| CN110331998B CN110331998B (en) | 2022-02-08 |
Family
ID=68147367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910672607.7A Expired - Fee Related CN110331998B (en) | 2019-07-24 | 2019-07-24 | Self-adaptive pressure relief type grouting anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110331998B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255494A (en) * | 2020-02-25 | 2020-06-09 | 中铁隆昌铁路器材有限公司 | Lengthened anti-drop prestressed hollow grouting anchor rod and supporting method thereof |
| CN112682081A (en) * | 2021-01-04 | 2021-04-20 | 长安大学 | Control anchor rod for reinforcing construction of tunnel section and reinforcing method of tunnel section |
| CN113775365A (en) * | 2021-09-17 | 2021-12-10 | 沈阳促晋科技有限公司 | Cutting type constant-resistance large-deformation anchor rod |
| CN114941544A (en) * | 2022-05-30 | 2022-08-26 | 中南大学 | Double energy-absorbing anchor rod and supporting method |
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| CN205422779U (en) * | 2016-03-24 | 2016-08-03 | 山东科技大学 | Side direction supports and to let pressure formula slip casting stock |
| CN108756976A (en) * | 2018-06-11 | 2018-11-06 | 东北大学 | A kind of self-expanding anchor pole and its preparation and application |
| CN109505640A (en) * | 2018-11-19 | 2019-03-22 | 陕西煤业化工技术研究院有限责任公司 | A kind of screw-type metal pressure-relieving achor bar device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111255494A (en) * | 2020-02-25 | 2020-06-09 | 中铁隆昌铁路器材有限公司 | Lengthened anti-drop prestressed hollow grouting anchor rod and supporting method thereof |
| CN112682081A (en) * | 2021-01-04 | 2021-04-20 | 长安大学 | Control anchor rod for reinforcing construction of tunnel section and reinforcing method of tunnel section |
| CN112682081B (en) * | 2021-01-04 | 2023-03-14 | 长安大学 | Control anchor rod for reinforcing construction of tunnel section and reinforcing method of tunnel section |
| CN113775365A (en) * | 2021-09-17 | 2021-12-10 | 沈阳促晋科技有限公司 | Cutting type constant-resistance large-deformation anchor rod |
| CN114941544A (en) * | 2022-05-30 | 2022-08-26 | 中南大学 | Double energy-absorbing anchor rod and supporting method |
| CN114941544B (en) * | 2022-05-30 | 2023-02-03 | 中南大学 | Double energy-absorbing anchor rod and supporting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110331998B (en) | 2022-02-08 |
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