CN109973131A - A kind of prestressed anchor and test method for simulation laboratory test - Google Patents
A kind of prestressed anchor and test method for simulation laboratory test Download PDFInfo
- Publication number
- CN109973131A CN109973131A CN201910131172.5A CN201910131172A CN109973131A CN 109973131 A CN109973131 A CN 109973131A CN 201910131172 A CN201910131172 A CN 201910131172A CN 109973131 A CN109973131 A CN 109973131A
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- anchor
- bar body
- anchorage head
- anchor bar
- nut
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- 238000004088 simulation Methods 0.000 title claims abstract description 44
- 238000009533 lab test Methods 0.000 title claims abstract description 31
- 238000010998 test method Methods 0.000 title abstract description 6
- 238000002347 injection Methods 0.000 claims abstract description 24
- 239000007924 injection Substances 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 10
- 238000004873 anchoring Methods 0.000 claims description 9
- 238000005553 drilling Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002789 length control Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- -1 round bar etc.) Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 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
-
- 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
- E21D21/0006—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by the bolt material
-
- 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
- E21D21/0086—Bearing plates
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)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention provides a kind of prestressed anchors and test method for simulation laboratory test, it is related to bolt simulation experimental technique field, including anchor bar body, anchorage head, loading plate, Minitype jack, backing plate, nut, liquid injection pipe and topping-up pump, the anchored end of anchor bar body is provided with anchorage head, the anchored end of anchor bar body is in coniform, anchorage head side offers tensioning seam, loading plate is arranged in anchor pole exposed junction side, pressure is equipped with nut on backing plate, anchor bar body sequentially passes through loading plate, Minitype jack and backing plate, jack connects topping-up pump by liquid injection pipe, digital display manometer is provided on liquid injection pipe.It when carrying out simulation test, drills on similar material model first, then anchor rod prestress simulation laboratory test system is installed, pretightning force is applied by topping-up pump, and read and adjust according to digital display manometer, complete test.It is inconvenient that the anchor pole and test method solve the problems, such as in anchor rod experiment that prestressing force is adjusted, also have many advantages, such as it is easy to operate, meet scene.
Description
Technical field
The present invention relates to bolt simulation experimental technique fields, especially a kind of adjustable for simulation laboratory test prestressing force
Anchor pole, and the method for carrying out simulation test using the anchor pole.
Background technique
Suspension roof support is used widely in engineering fields such as mining, ground, tunnels, Effects of Supporting and anchorage length
And prestressing force size etc. is closely related.Limited by field engineering, field test there are certain difficulty, simulation laboratory test at
For a kind of important research means.
Currently, bolt simulation material can be divided into wooden (bamboo, round bar etc.), plastics by material indoors in simulation test
(resin anchor), steel (round steel, screw rod etc.), length control difficulty is frequently with overall length anchor when Anchor Agent bonds when due to simulation
Gu and preceding two class, without pretightning force, the general of steel is applied using nut, prestressing force size is uncontrollable and accurate monitoring difficulty, by
This causes simulation effect and engineering actual variance larger.Therefore, existing around the accurate simulation for how realizing laboratory test anchor pole
Technology has carried out a series of improvement, such as micro pre-stressed anchor pole, which uses binder full length fastening, increased by exposed junction
If spring realizes prestressed application, and monitors rockbolt stress situation using small pressure ring, but by anchor rod anchored length, spring
The limitation contacted with wall surface etc. with pressure-bearing plate coupling and pressure rings, causes laboratory test results and the larger difference of engineering physical presence
It is different.Therefore, it is necessary to a kind of prestressed anchor of simulation laboratory test, realize what anchor pole difference anchorage length and prestressing force were adjusted
Pilot system, to obtain better anchor pole indoor simulation effect.
Summary of the invention
Inconvenient technical problem is adjusted to solve prestressing force and the anchorage length of anchor pole, the present invention provides one kind to be used for
The prestressed anchor and test method of simulation laboratory test, specific technical solution are as follows.
A kind of prestressed anchor for simulation laboratory test, including anchor bar body, anchorage head, loading plate, Minitype jack,
Backing plate, nut, liquid injection pipe, digital display manometer and topping-up pump；The anchored end of anchor bar body is provided with anchorage head, anchor bar body connection anchoring
In coniform, anchorage head offers tensioning seam in side for the end of head；Anchor bar body sequentially passes through loading plate, Minitype jack and pad
The exposed junction of anchor bar body is arranged in plate, nut；Loading plate is arranged in anchor pole exposed junction side, is provided between loading plate and backing plate
Minitype jack, pressure is equipped with nut on backing plate；Jack connects topping-up pump by liquid injection pipe, is provided with digital display pressure on liquid injection pipe
Table.
Preferably, the anchored end of anchor bar body is provided with external screw thread, and anchored end reach is greater than anchorage head length；Anchor pole
The exposed junction of body is provided with external screw thread, and exposed junction external thread length is greater than nut length.
It may further be preferable that anchorage head is cylindrical, anchorage head outer surface is provided with pawl shape form friction pattern, anchorage head axis
It is provided with through-hole identical with anchor bar body diameter on line, is provided with internal screw thread in through-hole, the anchored end external screw thread phase with anchor bar body
Cooperation.
Preferably, Minitype jack is specially the jack of tubular, and jack internal diameter is equal to anchor bar body diameter, and outer diameter is small
In the diameter of loading plate and backing plate.
Preferably, it is provided with tee tube on liquid injection pipe, digital display manometer, each branch on tee tube are connected on tee tube
It is provided with switch.
Preferably, anchor bar body is made using steel, and anchorage head is formed by plastic production, and nut is hex nut.
A kind of anchor rod prestress simulation laboratory test method utilizes a kind of above-mentioned prestressing force for simulation laboratory test
Anchor pole is tested, and step includes:
A. similar material model is made, is drilled on model, according to the depth and brill of rock-bolt length and diameter adjustment drilling
Bore dia；
B. anchorage head length is designed according to anchoring depth, anchorage head is installed, anchorage head is sent to drilling hole bottom；
C. anchor bar body is installed, anchor bar body anchoring section is cooperated by screw thread and anchorage head, and anchor bar body rotation is sent to projected depth；
D. loading plate, Minitype jack, backing plate and nut are successively installed, is tightened by nut；
E. liquid injection pipe, tee tube, digital display manometer and topping-up pump are connected；
F. bolt pretension is designed, tee tube switch is opened, design bolt pretension size is forced by topping-up pump, it is quiet
3~5min observation pressure gauge reading is set, if pressure reduction continues to pressurize, until pressure gauge reading remains unchanged, closes tee tube
Switch.
The beneficial effect comprise that
(1) provided by the present invention for the prestressed anchor of simulation laboratory test, Minitype jack is regulated and controled using topping-up pump
It is flexible, realize the accurate adjusting of bolt pretension, it is easy to operate, easily controllable, it is big to can be realized a variety of different prestressing force
Small application solves small, uncontrollable limitation only with nut application prestressing force range, has expanded the model of bolt simulation test
It encloses.
(2) it by using different length anchorage head, realizes the laboratory test simulation of anchor pole difference anchorage length, is suitble to research
The unconspicuous problem of bolt pretension effect caused by full length fastening is more in line with bolt simulation test live practical.System
Use carrying plate structure so that Minitype jack contacted with wall surface it is more abundant, effectively avoid it is uneven due to excavating tunnel wall surface,
The phenomenon that Minitype jack is also easy to produce stress raisers in fluid injection pressure process.
(3) method of anchor rod prestress simulation laboratory test, adds anchor pole indoors on similar material model, anchor pole it is straight
Diameter and length adjustment are convenient, design anchorage head according to actual anchor rod anchored segment length, thus preferably simulate practical anchor pole by
Power keeps suitable pretightning force by topping-up pump pressurization, to realize the control to pretightning force, and then studies pretightning force and anchor pole
Anchorage length is to anchor rod anchored influence.
Detailed description of the invention
Fig. 1 is the prestressed anchor schematic diagram for simulation laboratory test；
Fig. 2 is anchorage head cross section structure schematic diagram；
Fig. 3 is anchor rod prestress simulation laboratory test schematic diagram；
In figure: 1- anchor bar body；2- loading plate；3- Minitype jack；4- backing plate；5- nut；6- liquid injection pipe；7- digital display pressure
Table；8- topping-up pump；9- anchorage head.
Specific embodiment
In conjunction with shown in Fig. 1 to Fig. 3, the present invention provides a kind of for the prestressed anchor of simulation laboratory test and test side
The specific embodiment of method is as follows.
A kind of prestressed anchor for simulation laboratory test specifically includes anchor bar body 1, anchorage head 9, loading plate 2, miniature
Jack 3, backing plate 4, nut 5, liquid injection pipe 6, digital display manometer 7 and topping-up pump 8.1 one end of anchor bar body passes through screw thread and anchorage head 9
Be connected, for the anchored end of fixing anchor bar body, the connection side of anchorage head and anchor bar body anchor rod anchored length adjusting；It is another
End is connected by screw thread with nut 5, and for fastening anchor pole, Minitype jack 3 is used to adjust the size of bolt pretension, realizes
The adjusting of bolt pretension controls, and is of great significance to the research of bolt pretension, hydraulic pump 8 is connected miniature by liquid injection pipe
Jack 3 accurately adjusts pretightning force by digital display manometer 7 and hydraulic pump 8.
The anchored end of anchor bar body 1 is provided with anchorage head 9, and 9 end of anchorage head that anchor bar body 1 connects is in coniform, thus just
Just anchor bar body 1 is inserted into armature boring and anchorage head, and anchorage head 9 offers tensioning seam in side, so as to so that anchorage head adapts to
The drilling of different-diameter, and scaling appropriate is carried out according to bolt diameter, wherein be tensioned seam design width can for 2~
6mm, to meet the requirement of most of ruler diameter, it can also be ensured that effective application of anchor force.In addition, replacing anchor using anchorage head
Gu agent is anchored, so as to accurately adjust anchorage length.Anchorage head 9 is cylindrical, anchorage head 9 can by plastic production and
At 9 outer surface of anchorage head is provided with pawl shape form friction pattern, preferably fixes anchorage head, guarantees that the position of anchorage head 9 is constant, anchor
Gu being provided with through-hole identical with anchor bar body diameter on 9 axis of head, anchor pole can be slightly less than also to better by tensioning seam
Anchor pole is locked, internal screw thread is provided in through-hole, is matched with the anchored end external screw thread of anchor bar body 1.By using different length anchor
Gu head realizes the laboratory test simulation of anchor pole difference anchorage length, solves bolt pretension effect caused by full length fastening not
Obvious problem is more in line with bolt simulation test live practical.
Anchor bar body 1 sequentially passes through loading plate 2, Minitype jack 3 and backing plate 4, and the exposed junction of anchor bar body 1 is arranged in nut 5,
Nut 5 can be hex nut.Anchor bar body 1 is made using steel, and for simulating anchor pole, loading plate 2 is arranged in anchor pole exposed junction
Side is provided with Minitype jack 3 between loading plate 2 and backing plate 4, pressure is equipped with nut 5 on backing plate 4.Wherein loading plate 2 and backing plate
4 specifically can be the steel plate that circular hole identical as anchor bar body diameter is contained at middle part, and steel plate is relatively large in diameter, and guarantee that Minitype jack 3 is pacified
Dress is convenient.The anchored end of anchor bar body 1 is provided with external screw thread, and anchored end reach is greater than anchorage head length, so as to effective
Anchoring, the exposed junction of anchor bar body 1 are provided with external screw thread, and exposed junction external thread length is greater than nut length, to facilitate nut solid
It is fixed.In addition, the system is effectively prevented using 2 structure of loading plate so that Minitype jack and wall face contact are more abundant
Due to the phenomenon that excavation tunnel wall surface is uneven, and Minitype jack is also easy to produce stress raisers in fluid injection pressure process.
Minitype jack 3 connects topping-up pump 8 by liquid injection pipe 6, is provided with digital display manometer 7 on liquid injection pipe 6.It is miniature very heavy
Top 3 is specially the jack of tubular, and the bearing capacity of jack is less than 20T, and jack internal diameter is equal to anchor bar body diameter, facilitates anchor
Bar passes through, and anchor pole passes through Minitype jack 3 so as to preferably apply pretightning force to anchor pole, and the outer diameter of jack is less than carrying
The diameter of plate and backing plate.It is provided with tee tube on liquid injection pipe 6, digital display manometer 7, each branch on tee tube are connected on tee tube
It is provided with switch.The end of liquid injection pipe is provided with hydraulic pipe connector and facilitates installation, and can need to be arranged according to test
Diverting switch pressurizes to Minitype jack using a topping-up pump, or using multiple topping-up pumps respectively to Minitype jack
It pressurizes.Using the flexible of topping-up pump regulation Minitype jack, the accurate adjusting of bolt pretension is realized, easy to operate,
It is easily controllable, it can be realized the application of a variety of different prestressing force sizes, solve that apply prestressing force range only with nut small, no
Controllable limitation has expanded the range of bolt simulation test.
A kind of anchor rod prestress simulation laboratory test method utilizes a kind of above-mentioned prestressing force for simulation laboratory test
Anchor pole is tested, and specific test procedure includes:
A. similar material model is made, is drilled on model, according to rock-bolt length and diameter that testing program determines, adjustment
The depth and bore diameter of drilling.Specifically on similar material model, drills through and set using boring bar tool according to design requirement
The drilling of diameter and depth is counted, and carries out borehole cleaning.
B. anchorage head length is designed according to anchoring depth, anchorage head is installed, anchorage head is sent to drilling hole bottom, it can also be with
Anchorage head is sent into bottom hole by anchor bar body.
C. anchor bar body is installed, anchor bar body anchoring section is cooperated by screw thread and anchorage head, and anchor bar body rotation is sent to projected depth.
D. loading plate, Minitype jack, backing plate and nut are successively installed, is tightened by nut, so that loading plate, miniature thousand
Jin top and backing plate are in close contact.
E. liquid injection pipe, tee tube, digital display manometer and topping-up pump are connected, particular by liquid injection pipe by threeway respectively with note
Liquid pump and Minitype jack are connected, and digital display manometer is connected in threeway.
F. it designs bolt pretension, opens tee tube switch, pretightning force size is forced by topping-up pump, stand 3~
5min observes pressure gauge reading, if pressure reduction continues to pressurize, continuous observation closes three until pressure gauge reading remains unchanged
Siphunculus switch.
G. step A to F is repeated, multiple pretightning force test anchor poles are set on similar material model.
The method of anchor rod prestress simulation laboratory test adds anchor pole, the diameter of anchor pole indoors on similar material model
It is convenient with length adjustment, anchorage head is designed according to actual anchor rod anchored segment length, so that practical rockbolt stress is preferably simulated,
Suitable pretightning force is kept by topping-up pump pressurization, to realize the control to pretightning force, and then studies pretightning force and anchor pole anchor
Gu length is to anchor rod anchored influence.
Certainly, the above description is not a limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the technical staff in domain is made within the essential scope of the present invention also should belong to of the invention
Protection scope.
Claims (7)
1. a kind of prestressed anchor for simulation laboratory test, which is characterized in that including anchor bar body, anchorage head, loading plate, micro-
Type jack, backing plate, nut, liquid injection pipe, digital display manometer and topping-up pump；The anchored end of the anchor bar body is provided with anchorage head,
Anchor bar body connects the end of anchorage head in coniform, and anchorage head offers tensioning seam in side；The anchor bar body, which sequentially passes through, to be held
The exposed junction of anchor bar body is arranged in support plate, Minitype jack and backing plate, nut；The loading plate is arranged in anchor pole exposed junction one
Side is provided with Minitype jack between loading plate and backing plate, pressure is equipped with nut on backing plate；The jack is connected by liquid injection pipe
Topping-up pump is provided with digital display manometer on liquid injection pipe.
2. a kind of prestressed anchor for simulation laboratory test according to claim 1, which is characterized in that the anchor pole
The anchored end of body is provided with external screw thread, and anchored end reach is greater than anchorage head length；The exposed junction of the anchor bar body is provided with
External screw thread, exposed junction external thread length are greater than nut length.
3. a kind of prestressed anchor for simulation laboratory test according to claim 2, which is characterized in that the anchoring
Cylindrical, anchorage head outer surface is provided with pawl shape form friction pattern, is provided on the anchorage head axis and anchor bar body diameter
Identical through-hole is provided with internal screw thread in through-hole, matches with the anchored end external screw thread of anchor bar body.
4. a kind of prestressed anchor for simulation laboratory test according to claim 1, which is characterized in that described miniature
Jack is specially the jack of tubular, and jack internal diameter is equal to anchor bar body diameter, and outer diameter is less than the diameter of loading plate and backing plate.
5. a kind of prestressed anchor for simulation laboratory test according to claim 1, which is characterized in that the fluid injection
It is provided with tee tube on pipe, digital display manometer is connected on tee tube, each branch is provided with switch on the tee tube.
6. a kind of prestressed anchor for simulation laboratory test according to claim 1, which is characterized in that the anchor pole
Body is made using steel, and the anchorage head is formed by plastic production, and the nut is hex nut.
7. a kind of anchor rod prestress simulation laboratory test method, described in any item a kind of for interior using as claimed in any one of claims 1 to 66
The prestressed anchor of simulation test is tested, which is characterized in that step includes:
A. similar material model is made, is drilled on model, it is straight according to the depth and drilling of rock-bolt length and diameter adjustment drilling
Diameter；
B. anchorage head length is designed according to anchoring depth, anchorage head is installed, anchorage head is sent to drilling hole bottom；
C. anchor bar body is installed, anchor bar body anchoring section is cooperated by screw thread and anchorage head, and anchor bar body rotation is sent to projected depth；
D. loading plate, Minitype jack, backing plate and nut are successively installed, is tightened by nut；
E. liquid injection pipe, tee tube, digital display manometer and topping-up pump are connected；
F. bolt pretension is designed, tee tube switch is opened, design bolt pretension size is forced by topping-up pump, stands 3
~5min observes pressure gauge reading, if pressure reduction continues to pressurize, until pressure gauge reading remains unchanged, closes tee tube and opens
It closes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910131172.5A CN109973131B (en) | 2019-02-22 | 2019-02-22 | Prestressed anchor rod for indoor simulation test and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910131172.5A CN109973131B (en) | 2019-02-22 | 2019-02-22 | Prestressed anchor rod for indoor simulation test and test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109973131A true CN109973131A (en) | 2019-07-05 |
| CN109973131B CN109973131B (en) | 2021-03-30 |
Family
ID=67077178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910131172.5A Active CN109973131B (en) | 2019-02-22 | 2019-02-22 | Prestressed anchor rod for indoor simulation test and test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109973131B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322101A (en) * | 2020-04-29 | 2020-06-23 | 湖南科技大学 | Auxiliary device for applying pre-tightening force of anchor rod and construction method |
| CN111622790A (en) * | 2020-06-11 | 2020-09-04 | 中国矿业大学 | Intelligent and rapid application method for prestress of anchor rod |
| CN111997672A (en) * | 2020-09-08 | 2020-11-27 | 宁波朗达工程科技有限公司 | Collaborative prestress array anchor rod device and construction method thereof |
| CN115575025A (en) * | 2022-12-07 | 2023-01-06 | 中感(安徽)矿山技术有限公司 | Main control pretightning force anchor rod, cable pressure sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2388349Y (en) * | 1999-07-12 | 2000-07-19 | 孟凡新 | Screw internal expansion anchoring-bolt |
| CN103234682A (en) * | 2013-05-13 | 2013-08-07 | 蔡青林 | Anchor rod tensometer |
| CN203310698U (en) * | 2013-05-10 | 2013-11-27 | 天地科技股份有限公司 | Coal mine tunnel coal-rock mass anchoring performance testing device |
| CN206832585U (en) * | 2017-06-19 | 2018-01-02 | 河北建筑工程学院 | Use for laboratory anchor system test device |
| CN207636227U (en) * | 2018-01-04 | 2018-07-20 | 河南理工大学 | A kind of laboratory baseboard of coal mine roadway anchorage cable anchoring power test and experiment device |
-
2019
- 2019-02-22 CN CN201910131172.5A patent/CN109973131B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2388349Y (en) * | 1999-07-12 | 2000-07-19 | 孟凡新 | Screw internal expansion anchoring-bolt |
| CN203310698U (en) * | 2013-05-10 | 2013-11-27 | 天地科技股份有限公司 | Coal mine tunnel coal-rock mass anchoring performance testing device |
| CN103234682A (en) * | 2013-05-13 | 2013-08-07 | 蔡青林 | Anchor rod tensometer |
| CN206832585U (en) * | 2017-06-19 | 2018-01-02 | 河北建筑工程学院 | Use for laboratory anchor system test device |
| CN207636227U (en) * | 2018-01-04 | 2018-07-20 | 河南理工大学 | A kind of laboratory baseboard of coal mine roadway anchorage cable anchoring power test and experiment device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322101A (en) * | 2020-04-29 | 2020-06-23 | 湖南科技大学 | Auxiliary device for applying pre-tightening force of anchor rod and construction method |
| CN111622790A (en) * | 2020-06-11 | 2020-09-04 | 中国矿业大学 | Intelligent and rapid application method for prestress of anchor rod |
| CN111622790B (en) * | 2020-06-11 | 2021-08-03 | 中国矿业大学 | Intelligent and rapid application method for prestress of anchor rod |
| CN111997672A (en) * | 2020-09-08 | 2020-11-27 | 宁波朗达工程科技有限公司 | Collaborative prestress array anchor rod device and construction method thereof |
| CN115575025A (en) * | 2022-12-07 | 2023-01-06 | 中感(安徽)矿山技术有限公司 | Main control pretightning force anchor rod, cable pressure sensor |
| CN115575025B (en) * | 2022-12-07 | 2023-02-17 | 中感(安徽)矿山技术有限公司 | Main control pretightning force anchor rod, cable pressure sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109973131B (en) | 2021-03-30 |
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Application publication date: 20190705 Assignee: BEIJING MUTI-MECHANISM TECHNOLOGY CO.,LTD. Assignor: SHANDONG University OF SCIENCE AND TECHNOLOGY Contract record no.: X2023980035356 Denomination of invention: A prestressed anchor rod and testing method for indoor simulation testing Granted publication date: 20210330 License type: Common License Record date: 20230509 |