CN108756974A - A kind of novel anti-shearing large deformation anchor rod - Google Patents
A kind of novel anti-shearing large deformation anchor rod Download PDFInfo
- Publication number
- CN108756974A CN108756974A CN201810381256.XA CN201810381256A CN108756974A CN 108756974 A CN108756974 A CN 108756974A CN 201810381256 A CN201810381256 A CN 201810381256A CN 108756974 A CN108756974 A CN 108756974A
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- China
- Prior art keywords
- sleeve
- constant
- roller bearing
- rod
- large deformation
- 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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- 238000010008 shearing Methods 0.000 title claims abstract description 17
- 238000004873 anchoring Methods 0.000 claims abstract description 14
- 238000005096 rolling process Methods 0.000 claims description 24
- 241000826860 Trapezium Species 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 5
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000036244 malformation Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube
-
- 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
- E21D21/0093—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)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a kind of novel anti-shearing large deformation anchor rods, including the anchoring section body of rod, the free segment body of rod, sleeve, constant-resistance block and connector sleeve, the constant-resistance block and the free segment body of rod are linked together by connector sleeve, flexible deformation can occur for the connector sleeve, the free segment body of rod is located at the lower part of connector sleeve, the constant-resistance block is located at the top of connector sleeve, and constant-resistance block is in sleeve, the affixed anchoring section body of rod in upper end of the sleeve, a roller bearing is equipped in the sleeve, the roller bearing can move in sleeve.The present invention realizes the constant resistance and large deformation conception of anchor pole, improves service life and the anti-shear ability of anchor pole, avoids security risk.
Description
Technical field
The present invention relates to anchor pole more particularly to a kind of novel anti-shearing large deformation anchor rods.
Background technology
Since 1912, since German Xie Liezi mines use suspension roof support underworkings at first, suspension roof support was tied with it
Structure is simple, easy for construction, cost it is relatively low and to engineering it is adaptable the features such as, in all kinds of civil engineerings and mining engineering
Extensive use is arrived.Such as the Three Gorges Projects in China, it has just used in dam construction a large amount of anchor poles and anchor cable to safeguard and has excavated
Side slope and palisades.
Existing anchorage technology core is：Tension member is squeezed into rock-soil layer, Rock And Soil around anchor pole and its is utilized
Shear strength carry out the pulling force of transferring structure object, ensure the stabilization of stratum excavation face, while providing and acting on works to hold
By the drag of outer lotus, so that anchoring stratum is generated compression area and reinforced action is played to strengthening stratum, enhance the intensity on stratum, change
It is apt to its mechanical property, keeps structure chain to together with stratum, a kind of cooperative complex of formation is to bear outer force effect.
China is vast in territory, and the topography and geomorphology and engineering geological condition of different regions have a long way to go, especially political affairs in recent years
Plan starts to tilt to central and west regions, has built a large amount of various infrastructure projects, and it is well known that China has been concentrated in central and west regions
Most of complex geologic conditions region, this for existing engineering construction equipment and technology, be especially widely used and
Particularly important mooring rod technique is huge challenge.
Main support form one of of the anchor pole as underground engineering and side slope plays emphatically the maintenance of stability of civil engineering
The effect wanted, but its basic theories and operation principle obtained update in past 100 years, this and the mankind its
The continuous development and advance of his engineering technology are contradictory.Such as existing common bolt is in some high-ground stress and cranny development
Just there is reduced service life in regional engineering construction, need to be replaced frequently, and is difficult to resist the outstanding problem of shear stress effect,
This is totally unfavorable for the safety of stablizing of engineering.
For the update upgrade problem of Soil Anchor Design and operation principle, there are many people from new material application, structure design etc.
All multi-angles are set out, it is proposed that the Soil Anchor Design design of oneself and scheme.Such as：It can carry out the HMG type constant-resistance of energy absorption
Large deformation anchor rod.This anchor pole is different from other existing energy absorption anchor structure features, it can not only provide larger branch
Resistance and malformation amount are protected, and there is constant-resistance mechanical characteristic, the proposition of this novel anchor rod is with having well solved anchor pole
Vertical deformation destroys problem, may be used in the roadway with large deformation problem of deep, but in landslide control, and the transverse direction of anchor pole is become
Shape destroys problem, and this novel anchor rod can not solve.
Invention content
In view of this, the embodiment provides a kind of anti-shear ability that can improve anchor pole, the cross of anchor pole is controlled
To deformation, the novel anti-shearing large deformation anchor rod of security risk is avoided.
The embodiment of the present invention provides a kind of novel anti-shearing large deformation anchor rod, including the anchoring section body of rod, free segment bar
Body, sleeve, constant-resistance block and connector sleeve, the constant-resistance block and the free segment body of rod are linked together by connector sleeve, the connector sleeve
Flexible deformation can occur, the free segment body of rod is located at the lower part of connector sleeve, and the constant-resistance block is located at the top of connector sleeve, and permanent
Stop block is in sleeve, the affixed anchoring section body of rod in upper end of the sleeve, and a roller bearing is equipped in the sleeve, and the roller bearing can cover
It is moved in cylinder.
Further, the sleeve includes the square tube of top plate and both ends open, and the top plate is in the top of square tube, and and square tube
It is integrally formed, the end of the top surface welding anchoring section body of rod of the top plate, channel is equipped in the two side of the square tube, it is described logical
It is moved for roller bearing in road.
Further, the channel includes linear road and curve road, and the curve road is formed upwards along the moving direction of roller bearing
The gradient, the linear road and curve road are staggered.
Further, the roller bearing includes a connecting shaft and two axis of rolling, and two axis of rolling are located at the outside of connecting shaft, the rolling
The diameter of moving axis is less than connecting shaft, the length of the connecting shaft between sleeve two side at a distance from be adapted, the axis of rolling
Length is adapted with the thickness of sleeve lateral wall, and the roller bearing runs through the two side of sleeve, and the connecting shaft is located in sleeve, described
The axis of rolling is located on channel.
Further, nut is cased on the outside of the axis of rolling, the diameter of the nut is more than the diameter of the axis of rolling, the spiral shell
Mother is located at the outside of side wall, and the outside of the axis of rolling is equipped with external screw thread, and the nut has internal thread compatible with external screw thread.
Further, the constant-resistance block is irregular cylinder, and the side of the constant-resistance block is higher than the other side, higher side tool
There is the gradient, and interacts with roller bearing.
Further, the constant-resistance block includes square column and right-angled trapezium post, and the square column and right-angled trapezium post are integrally formed, institute
It states right-angled trapezium post to be located above the side of square column, and the Gao Yi of right-angled trapezium post that waist and square column rectangular with bottom edge
On straight line, another waist of the right-angled trapezium post is connected with the appearance of square column.
Further, the constant-resistance block is made of high strength alloy material, and the anchoring section body of rod is made of spiral, institute
It is nylon material set to state connector sleeve, and the surface roughness of the roller bearing is big.
Compared with prior art, the invention has the advantages that：(1) constant-resistance block can be moved in sleeve setting compared with
Long distance, and then free section body of rod transverse shifting a distance is enable by nylon material set, realize anchor pole
Constant resistance and large deformation is conceived, and the service life of anchor pole is improved.(2) structure of belt fastener has been used for reference, anchor pole can carry out transversely deforming, improve
The anti-shear ability of anchor pole.(3) transversely deforming for utilizing the interaction control anchor pole of roller bearing and constant-resistance block, can effectively control
Constant-resistance block is moved along under the action of Thrust of Landslide in sleeve, and cannot be retreated, and security risk is avoided.
Description of the drawings
Fig. 1 is an a kind of schematic diagram of novel anti-shearing large deformation anchor rod of the present invention.
Fig. 2 is a schematic diagram of Fig. 1 middle sleeves and roller bearing.
Fig. 3 is a schematic diagram of roller bearing in Fig. 1.
Fig. 4 is a schematic diagram of constant-resistance block and roller bearing in Fig. 1.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is further described.
Referring to FIG. 1, the embodiment provides a kind of novel anti-shearing large deformation anchor rod, including anchoring section bar
Body 1, the free segment body of rod 2, sleeve 3, constant-resistance block 5 and connector sleeve 6.
The anchoring section body of rod 1 is made of spiral, the upper end of 1 affixed sleeve 3 of the anchoring section body of rod.
Referring to FIG. 2, sleeve 3 is closed for one end, one end is unclosed, and the rectangle column of boring, and sleeve 3 includes top
The square tube 32 of plate 31 and both ends open, the top plate 31 are integrally formed in the top of square tube 32, and with square tube 32, the top plate 31
The top surface welding anchoring section body of rod 1 end, be equipped with a roller bearing 4 in the sleeve 3, the roller bearing 4 can move in sleeve 3,
Preferably, channel 321 is equipped in the two side of the square tube 32, the channel 321 is moved for roller bearing 4.
Channel 321 includes linear road 3211 and curve road 3212, and the curve road 3212 is formed along the moving direction of roller bearing 4
The upward gradient, the linear road 3211 and curve road 3212 are staggered, i.e., one section of linear road 3211 connects one section of curve road
3212, curve road 3212 reconnects one section of linear road 3211, and roller bearing 4, need to be in the work of prodigious power when by curve road 3212
It could pass through under, to improve the durability of anchor pole, practicability.
Referring to FIG. 3, roller bearing 4 can provide larger frictional force, roller bearing 4 includes a connecting shaft 41 and two axis of rolling 42, two rollings
Moving axis 42 is located at the outside of connecting shaft 41, and the diameter of the axis of rolling 42 is less than connecting shaft 41, the length of the connecting shaft 41 with
Distance between 3 two side inner wall of sleeve is adapted, and the length of the axis of rolling 42 is adapted with the thickness of 3 side wall of sleeve, described
Roller bearing 4 runs through the two side of sleeve 3, and the connecting shaft 41 is located in sleeve 3, and the axis of rolling 42 is located on channel 321.Ensure
Roller bearing 4 moves in sleeve 3 along channel 321.
The outside of the axis of rolling 42 is cased with nut 7, and the diameter of the nut 7 is more than the diameter of the axis of rolling 42, the diameter of nut 7
It is adapted with the diameter of connecting shaft 41, the nut 7 is located at the outside of side wall, and the outside of the axis of rolling 42 is equipped with external screw thread
(not shown), the nut 7 have internal thread (not shown) compatible with external screw thread.Nut 7 is used for preventing roller bearing 4
It skids off from sleeve 3 in sliding process, and is dismantled convenient for roller bearing 4,4 surface roughness of roller bearing is big, can jointly make with constant-resistance block 5
With ensureing under larger constant-resistance force effect the sliding in sleeve 3 of roller bearing 4.
Referring to FIG. 4, constant-resistance block 5 is made of high strength alloy material, it is not that can keep larger constant-resistance, constant-resistance block 5
The side of regular cylinder, the constant-resistance block 5 is higher than the other side, and higher side has the gradient, and interacts with roller bearing 4, permanent
Stop block 5 is in sleeve 3.The constant-resistance block 5 can provide constant resistance with 4 collective effect of roller bearing.
Preferably, constant-resistance block 5 includes square column 51 and right-angled trapezium post 52, the square column 51 and the one of right-angled trapezium post 52 at
Type, the right-angled trapezium post 52 are located above the side of square column 51, and that waist rectangular with bottom edge of right-angled trapezium post 52 with
Point-blank, another waist of the right-angled trapezium post 52 is connected the height of square column with the appearance of square column 51.
Connector sleeve 6 is nylon material set, and flexible deformation can occur for connector sleeve 6, and corrosion-resistant, tensile capacity is strong, can occur compared with
Big flexible deformation can be very good the socket free segment body of rod 2 and constant-resistance block 5 without destroying, and is formed and is interlocked.
Constant-resistance block 5 is linked together by connector sleeve 6 and the free segment body of rod 2, and the free segment body of rod 2 is located at connector sleeve 6
Lower part, the constant-resistance block 5 is located at the top of connector sleeve 6.
The course of work：When coming down, Thrust of Landslide pushes the free segment body of rod 2, and the free segment body of rod 2 passes through 6 band of connector sleeve
Dynamic constant-resistance block 5 moves, constant-resistance block 5 and then the promotion movement of roller bearing 4, two-way interaction, since roller bearing 4 can provide larger friction
Power, when frictional force is more than Thrust of Landslide between constant-resistance block 5 and roller bearing 4, constant-resistance block 5 is in relative static conditions with roller bearing 4, works as perseverance
When frictional force is less than Thrust of Landslide between stop block 5 and roller bearing 4, the collective effect of roller bearing 4 and constant-resistance block 5 can make constant-resistance block 5 in sleeve 3
The relatively long distance of interior mobile setting, and be press-connected set 6 and lateral elastic deformation occurs, to realize the lateral large deformation of anchor pole
Anti-shear ability.
The present invention realizes the constant resistance and large deformation conception of anchor pole, improves the service life of anchor pole；Improve the anti-shearing of anchor pole
Ability；Constant-resistance block can effectively be controlled to be moved along in sleeve under the action of Thrust of Landslide, and cannot be retreated, safety is avoided
Hidden danger.
Herein, the nouns of locality such as involved front, rear, top, and bottom are to be located in figure with parts in attached drawing and zero
Part mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the noun of locality
Use should not limit the claimed range of the application.
In the absence of conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of novel anti-shearing large deformation anchor rod, which is characterized in that including the anchoring section body of rod, the free segment body of rod, sleeve, perseverance
Stop block and connector sleeve, the constant-resistance block and the free segment body of rod are linked together by connector sleeve, and elasticity can occur for the connector sleeve
Deformation, the free segment body of rod are located at the lower part of connector sleeve, and the constant-resistance block is located at the top of connector sleeve, and constant-resistance block is in sleeve
Interior, the affixed anchoring section body of rod in upper end of the sleeve, the sleeve is interior to be equipped with a roller bearing, and the roller bearing can move in sleeve.
2. a kind of novel anti-shearing large deformation anchor rod according to claim 1, which is characterized in that the sleeve includes top
The square tube of plate and both ends open, the top plate are integrally formed in the top of square tube, and with square tube, the top surface weld anchor of the top plate
Gu the end of the section body of rod, channel is equipped in the two side of the square tube, the channel is moved for roller bearing.
3. a kind of novel anti-shearing large deformation anchor rod according to claim 2, which is characterized in that the channel includes straight
Drawing lines and curve road, the curve road form the upward gradient along the moving direction of roller bearing, and the linear road and curve road interlock
Setting.
4. a kind of novel anti-shearing large deformation anchor rod according to claim 3, which is characterized in that the roller bearing includes one
Connecting shaft and two axis of rolling, two axis of rolling are located at the outside of connecting shaft, and the diameter of the axis of rolling is less than connecting shaft, the connection
The length of axis between sleeve two side at a distance from be adapted, the length of the axis of rolling is adapted with the thickness of sleeve lateral wall, institute
The two side that roller bearing runs through sleeve is stated, the connecting shaft is located in sleeve, and the axis of rolling is located on channel.
5. a kind of novel anti-shearing large deformation anchor rod according to claim 4, which is characterized in that outside the axis of rolling
Side is cased with nut, and the diameter of the nut is more than the diameter of the axis of rolling, and the nut is located at the outside of side wall, the axis of rolling
Outside is equipped with external screw thread, and the nut has internal thread compatible with external screw thread.
6. a kind of novel anti-shearing large deformation anchor rod according to claim 1, which is characterized in that the constant-resistance block is not
The side of regular cylinder, the constant-resistance block is higher than the other side, and higher side has the gradient, and interacts with roller bearing.
7. a kind of novel anti-shearing large deformation anchor rod according to claim 6, which is characterized in that the constant-resistance block includes
Square column and right-angled trapezium post, the square column and right-angled trapezium post are integrally formed, and the right-angled trapezium post is located on the side of square column
Side, and rectangular that waist and square column in right-angled trapezium post and bottom edge it is high point-blank, the right-angled trapezium post it is another
One waist is connected with the appearance of square column.
8. a kind of novel anti-shearing large deformation anchor rod according to claim 1, which is characterized in that the constant-resistance block is by height
Strength alloy material is made, and the anchoring section body of rod is made of spiral, and the connector sleeve is nylon material set, the roller bearing
Surface roughness it is big.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810381256.XA CN108756974B (en) | 2018-04-25 | 2018-04-25 | Anti-shearing large-deformation anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810381256.XA CN108756974B (en) | 2018-04-25 | 2018-04-25 | Anti-shearing large-deformation anchor rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108756974A true CN108756974A (en) | 2018-11-06 |
| CN108756974B CN108756974B (en) | 2020-02-14 |
Family
ID=64011679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810381256.XA Expired - Fee Related CN108756974B (en) | 2018-04-25 | 2018-04-25 | Anti-shearing large-deformation anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108756974B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153393A (en) * | 2021-06-02 | 2021-07-23 | 中国矿业大学 | Self-adaptive anti-shearing large-deformation anchor rod |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4220636A1 (en) * | 1992-06-24 | 1994-01-05 | Ischebeck Friedrich Gmbh | Coupling sleeve for self-tapping injection anchors for flushing medium injection during percussion drilling - includes internal thread and axial abutment for screwed-in injection anchor |
| CN201943725U (en) * | 2011-03-15 | 2011-08-24 | 北京科技大学 | Friction sleeve type large-deformation anchor rod |
| CN102562109A (en) * | 2012-01-15 | 2012-07-11 | 山东科技大学 | Resistance-increasing yielding high-deformation anchor rod and processing method thereof |
| CN204060749U (en) * | 2014-08-01 | 2014-12-31 | 中国科学院、水利部成都山地灾害与环境研究所 | A kind of constant resistance and large deformation anchor rod/anchor cable |
| CN105422152A (en) * | 2015-12-28 | 2016-03-23 | 山东科技大学 | Large-deformation shear-resistant anchor rod and mounting method thereof |
| CN105736025A (en) * | 2016-02-02 | 2016-07-06 | 重庆大学 | Anti-breakage anchor rod |
| CN107740702A (en) * | 2017-11-14 | 2018-02-27 | 缪协兴 | A kind of pressure-release anchor cable |
-
2018
- 2018-04-25 CN CN201810381256.XA patent/CN108756974B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4220636A1 (en) * | 1992-06-24 | 1994-01-05 | Ischebeck Friedrich Gmbh | Coupling sleeve for self-tapping injection anchors for flushing medium injection during percussion drilling - includes internal thread and axial abutment for screwed-in injection anchor |
| CN201943725U (en) * | 2011-03-15 | 2011-08-24 | 北京科技大学 | Friction sleeve type large-deformation anchor rod |
| CN102562109A (en) * | 2012-01-15 | 2012-07-11 | 山东科技大学 | Resistance-increasing yielding high-deformation anchor rod and processing method thereof |
| CN204060749U (en) * | 2014-08-01 | 2014-12-31 | 中国科学院、水利部成都山地灾害与环境研究所 | A kind of constant resistance and large deformation anchor rod/anchor cable |
| CN105422152A (en) * | 2015-12-28 | 2016-03-23 | 山东科技大学 | Large-deformation shear-resistant anchor rod and mounting method thereof |
| CN105736025A (en) * | 2016-02-02 | 2016-07-06 | 重庆大学 | Anti-breakage anchor rod |
| CN107740702A (en) * | 2017-11-14 | 2018-02-27 | 缪协兴 | A kind of pressure-release anchor cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153393A (en) * | 2021-06-02 | 2021-07-23 | 中国矿业大学 | Self-adaptive anti-shearing large-deformation anchor rod |
| CN113153393B (en) * | 2021-06-02 | 2022-08-02 | 中国矿业大学 | Self-adaptive anti-shearing large-deformation anchor rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108756974B (en) | 2020-02-14 |
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Granted publication date: 20200214 Termination date: 20210425 |