CN110195608A - A kind of large deformation tunnel pressure-relieving achor bar measuring pressure from surrounding rock - Google Patents
A kind of large deformation tunnel pressure-relieving achor bar measuring pressure from surrounding rock Download PDFInfo
- Publication number
- CN110195608A CN110195608A CN201910524062.5A CN201910524062A CN110195608A CN 110195608 A CN110195608 A CN 110195608A CN 201910524062 A CN201910524062 A CN 201910524062A CN 110195608 A CN110195608 A CN 110195608A
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- pressure
- tape
- tray
- surrounding rock
- tower
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- 239000011435 rock Substances 0.000 title claims abstract description 87
- QLMNCUHSDAGQGT-UHFFFAOYSA-N sintofen Chemical compound N1=C(C(O)=O)C(=O)C=2C(OCCOC)=CC=CC=2N1C1=CC=C(Cl)C=C1 QLMNCUHSDAGQGT-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims abstract description 46
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 37
- 239000010959 steel Substances 0.000 claims abstract description 37
- 238000003475 lamination Methods 0.000 claims abstract description 10
- 238000004873 anchoring Methods 0.000 claims abstract description 7
- 230000008093 supporting effect Effects 0.000 abstract description 15
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000005641 tunneling Effects 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
-
- 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
- E21D21/02—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection having means for indicating tension
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 the large deformation tunnel pressure-relieving achor bars that one kind can measure pressure from surrounding rock, including the strength body of rod, tower-shaped spring assembly and monitoring tape component, the strength body of rod has the smooth free end of anchor pole and spiral lamination anchored end, the strength body of rod is equipped with arch tray, monitor tape component, high strength steel sheet tray, rigid washer and nut, the spiral lamination anchored end is embedded in anchoring body, the smooth free end of anchor pole passes through arch tray, tower-shaped spring, high strength steel sheet tray, rigid washer and nut, the present invention utilizes tower-shaped camber of spring characteristic, make anchor pole during suitable for surrounding rock large deformation, pressure from surrounding rock is released, and with allowing the increase of pressure amount, the Support Resistance that anchor pole provides incrementally increases, reach and " allows anti-binding, it first allows and resists afterwards, supporting effect after first soft just ", anchor pole is promoted to the big change of country rock The adaptability of shape solves the problems, such as that conventional anchor is unable to suitable for surrounding rock large deformation and is easy to tensile failure model and is unfavorable for pressure from surrounding rock release.In addition, anchor pole of the invention can also obtain the pressure from surrounding rock between country rock and preliminary bracing by the decrement of tower-shaped spring during measurement surrouding rock deformation.
Description
Technical field
The present invention relates to tunneling and underground engineering technical field, specially a kind of large deformation tunnel that can measure pressure from surrounding rock
Pressure-relieving achor bar.
Background technique
As tunnel construction Xiang Gengshen, more complicated stratum are developed, the soft rock large deformation problem faced is more and more.In complexity
Engineering geological condition, high-ground stress environment, weak surrounding rock area build major long tunnel, country rock usually show large deformation spy
Point.Suspension roof support is that country rock large deformation controls most common measure, and still, conventional anchor is difficult to reach in large deformation tunnel to be had
Supporting effect is imitated, main cause is that conventional anchor allows deflection small, when biggish deformation occurs in country rock, rock deformation is more than
When the tolerance range of conventional anchor, tensile failure model will occur in anchor pole, in turn result in supporting construction failure and destroy.
The important guiding theory that anti-binding is the design of large deformation tunnel support is put in part release surrouding rock deformation.Pressure-relieving achor bar
Essence be appropriate release surrouding rock deformation, reduce surrouding rock deformation to the active force of supporting construction.Domestic and international expert, Xue Zheti at present
Pressure-relieving achor bar out mainly has: body of rod Extensible type anchor pole, mechanical structure Extensible type anchor pole two major classes.Body of rod Extensible type anchor
Bar is to provide the pressure amount that allows by the yield strength and elongation percentage of raising anchor pole material itself.Such as, number of patent application
20131061044.4 make the waviness bodies of rod using the good steel of plasticity, during country rock large deformation the waveform body of rod by
Drawing straightens, to provide certain deformation and allow pressure.This kind of anchor pole allows pressure amount to be limited by anchor pole material property, limited to allow
Pressure amount is not able to satisfy the requirement of country rock large deformation control, and more complex to anchor pole material deformation requirements height, manufacture craft, can not
Measure pressure from surrounding rock.The body of rod of mechanical structure Extensible type anchor pole slides by specific mechanical elements generates displacement realization
Allow pressure, mechanical elements are using constant-resistance casing and column spring as Typical Representative.Such as, number of patent application 201210139092.2,
201320617954.8 anchor pole is mounted on anchor rod anchored section using constant-resistance casing, and constant-resistance casing is sliding along the body of rod when surrouding rock deformation
It moves, keeps constant resistance realization and allow pressure, but since constant-resistance cannula structure is complicated, cost of manufacture height is difficult in large deformation tunnel
It is widely applied.Application No. is 201510032192.9, the patent of application number 201320521682.1 then uses column spring structure
Element is mounted at body of rod anchor head, and column spring realization is squeezed when surrouding rock deformation and allows pressure, and the anchor structure of this structure is simple,
But due to using column spring, less, there is also allow the problem of pressure amount deficiency to decrement.Therefore, invent that a kind of structure is simple, peace
Dress is convenient, allows the stronger anchor pole of pressure energy power, has important practical significance to serious deformation control.
In Tunnel Engineering, surrouding rock deformation squeezes the pressure from surrounding rock of supporting construction if it exceeds supporting construction bearing capacity, just
Yield failure or structural instability will occur for phase supporting.Therefore, pressure from surrounding rock monitoring to supporting construction stability analysis, prediction and
Optimization design is particularly important.Pressure from surrounding rock size suffered by tunnel support structure, squeezing with country rock or expanding the deflection generated has
It closes.Currently, the monitoring of pressure from surrounding rock is mainly carried out using the method for pre-buried soil pressure cell between country rock and preliminary bracing, such methods
Somewhat expensive, installation is complicated, and larger to the interference of construction, is difficult to widely apply in Tunnel Engineering.Pressure from surrounding rock monitoring
Main purpose is to evaluate the stability and optimization supporting construction of supporting construction, therefore, using being not only able to achieve same target but also can be wide
The pressure from surrounding rock method for measurement of general application is of great significance.Pressure-relieving achor bar release surrouding rock deformation allows the process of pressure, is exactly one
The process of pressure from surrounding rock release, if can real-time monitoring anchor pole allow pressure amount, can obtain country rock pressure suffered by supporting construction indirectly
Power is analyzed the stability of supporting construction, is judged.In addition, also pressure amount and pressure from surrounding rock calculating can be allowed to enclose according to what is measured
Energy release in rock deformation process.Currently, the anchor pole of dynamic monitoring surrouding rock deformation is less.Such as, application No. is
201611155226.4 patent, its anchoring section installation outside anchor pole have the transparent bend pipe of tuning drive gear, will be saturating by drawstring
The pointer of bright bend pipe is connected with the body of rod, and body of rod sliding pulls the tuning drive gear of transparent bend pipe, thus show deformation numerical value, but due to
Structure is complicated for transparent swan neck system, at high cost, is difficult to be widely applied in anchoring engineering.In addition, the anchor of these energy Deformation Monitorings
Bar do not have deformation again, allows the function of pressure.Therefore, for large deformation tunnel the characteristics of, it is simple to invent a kind of structure, at low cost
It is honest and clean, not only had it is stronger allow pressure energy power, but also the anchor pole of dynamic monitoring pressure from surrounding rock has the construction in large deformation tunnel important
Realistic meaning.
Summary of the invention
It is an object of the invention to easily break under the conditions of large deformation for conventional anchor, be unfavorable for pressure from surrounding rock release
Deficiency, the large deformation based on " put anti-binding, first put and resist afterwards, is rigid after first soft " control theory, provide a kind of existing stronger deformation
It allows pressure energy power, and the large deformation pressure-relieving achor bar of pressure from surrounding rock can be monitored.It is big that the present invention adapts to large deformation tunnel wall rock deformation
Feature can also measure between country rock and preliminary bracing in addition to having the preferable adaptability for discharging pressure from surrounding rock by surrouding rock deformation
Pressure from surrounding rock, and then prediction and support parameter optimization are carried out to the stability of supporting construction and designed.The present invention has knot
Structure is simple, installation facilitates, and is suitable for the advantages of extensive use in large deformation constructing tunnel.
To achieve the above object, the invention provides the following technical scheme: a kind of large deformation tunnel that can measure pressure from surrounding rock
Pressure-relieving achor bar, including the strength body of rod, tower-shaped spring assembly and monitoring tape component, the strength body of rod have the smooth freedom of anchor pole
End and spiral lamination anchored end, the strength body of rod are equipped with arch tray, monitoring tape component, high strength steel sheet tray, rigidity
Washer and nut, the spiral lamination anchored end are embedded in anchoring body, and the smooth free end of anchor pole passes through arch tray, tower-shaped
Spring, high strength steel sheet tray, rigid washer and nut, the rigid washer are placed between high strength steel sheet tray and nut,
The tower-shaped spring assembly is formed by tower-shaped spring, and one end of tower-shaped spring is small end head spring ring, the tower-shaped spring
The other end is big end spring ring, and the small end head spring ring is weldingly fixed on arch tray, the big end spring ring weldering
It connecing and is fixed on high strength steel sheet tray, the monitoring tape component includes that monitoring tape, tape contracting box and tape end are buckled,
One end of the monitoring tape is equipped with tape contracting box, and the tape end button is mounted on the other end of monitoring tape, described
Monitoring tape component is mounted between high strength steel sheet tray and arch tray.
Preferably, the high strength steel sheet tray is equipped with the perforation of monitoring tape and steel plate tray center hole, the steel plate
Tray center hole is provided at the center of high strength steel sheet tray.
Preferably, the position of the monitoring tape perforation matches with monitoring tape, and monitors tape and pass through monitoring tape
Perforation.
Preferably, tape contracting box notch and arch tray centre bore, the anchor pole light are offered on the arch tray
Sliding free end passes through arch tray.
Preferably, the tape contracting box is fixed at the tape contracting box notch of arch tray.
Preferably, the arch tray is contacted with country rock.
The present invention provides one kind can measure the large deformation tunnel pressure-relieving achor bar of pressure from surrounding rock, have it is following the utility model has the advantages that
(1) the present invention is based on the large deformation of " put anti-binding, first put and resist afterwards, is rigid after first soft " to control theory, and tower-shaped spring is utilized to become
Shape characteristic makes anchor pole during suitable for surrounding rock large deformation, and pressure from surrounding rock is released, and with allowing the increase of pressure amount, anchor
The Support Resistance that bar provides is gradually increased, and reaches the supporting effect of " allow anti-binding, first allow and resist afterwards, first soft after just ", promotion anchor pole
To the adaptability of country rock large deformation, solves conventional anchor and be unable to suitable for surrounding rock large deformation and be easy to tensile failure model and be unfavorable for enclosing
The problem of rock pressure power discharges.
(2) for the present invention compared with the existing pressure-relieving achor bar using column spring, the present invention uses tower-shaped spring, and spring is final
It is compressible at pie, thus with it is bigger allow pressure amount, be able to achieve bigger surrouding rock deformation release.
(3) for the present invention compared with pressure-relieving achor bar existing, using constant-resistance cannula structure, the present invention is meeting biggish allow
On the basis of pressure amount and surrouding rock deformation adaptability, have the advantages that structure is simple, cost is relatively low, is easily installed, it is preferably big
Deformation tunnel is widely used.
(4) present invention utilizes the real-time monitoring surrouding rock deformation of monitoring of software component energy, based on this, in conjunction with tower-shaped spring
" compressive deformation-pressure curve " can obtain pressure from surrounding rock and release of accumulated energy amount during surrouding rock deformation, to large deformation
The stability of supporting construction carries out prediction and support parameter optimization.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the structural schematic diagram of high strength pallet of the invention；
Fig. 3 is the structural schematic diagram of arch tray of the invention；
Fig. 4 is the structural schematic diagram of tower-shaped spring of the invention；
Fig. 5 is the structural schematic diagram of monitoring tape of the invention.
In figure: 1, nut；2, rigid washer；3, high strength steel sheet tray；31, monitoring tape perforation；32, in steel plate pallet
Heart hole；4, arch tray；41, tape contracting box notch；42, arch tray centre bore；5, tower-shaped spring；51, small end head spring
Circle；52, big end spring ring；6, tape is monitored；61, tape contracting box；62, tape end is detained；7, the smooth free end of anchor pole；8,
Spiral lamination anchored end.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
As shown in Figs. 1-5, the present invention provides a kind of technical solution: the large deformation tunnel that one kind can measure pressure from surrounding rock allows pressure
Anchor pole, including the strength body of rod, tower-shaped spring assembly and monitoring tape component, the strength body of rod have the smooth free end 7 of anchor pole
With spiral lamination anchored end 8, the strength body of rod be equipped with arch tray 4, monitoring tape component 6, high strength steel sheet tray 3, just
Property washer 2 and nut 1, the spiral lamination anchored end 8 be embedded in anchoring body, the smooth free end 7 of anchor pole pass through arch support
Disk 4, tower-shaped spring 5, high strength steel sheet tray 3, rigid washer 2 and nut 1, the rigid washer 2 are placed in high strength steel plate support
Between disk 3 and nut 1, the tower-shaped spring assembly is formed by tower-shaped spring 5, and one end of tower-shaped spring 5 is small end head spring
The other end of circle 51, the tower-shaped spring 5 is big end spring ring 52, and the small end head spring ring 51 is weldingly fixed on arch support
On disk 4, the big end spring ring 52 is weldingly fixed on high strength steel sheet tray 3, and the monitoring tape component includes monitoring
One end of tape 6, tape contracting box 61 and tape end button 62, the monitoring tape 6 is equipped with tape contracting box 61, the tape
End button 62 is mounted on the other end of monitoring tape 6, and the monitoring tape component is mounted on high strength steel sheet tray 3 and arch
Between pallet 4.
The high strength steel sheet tray 3 is equipped with monitoring tape perforation 31 and steel plate tray center hole 32, the steel plate support
Center hole 32 is provided at the center of high strength steel sheet tray 3, and high strength steel sheet tray 3 has good mechanical property,
Bearing capacity is not less than the Fracture Force of the body of rod, and after nut 1 is turned round admittedly, high strength steel sheet tray 3 is not subjected to displacement on the body of rod；It is described
The position of monitoring tape perforation 31 matches with monitoring tape 6, and monitors tape 6 and pass through monitoring tape perforation 31, is easy to use
When detect in time；Tape contracting box notch 41 and arch tray centre bore 42, the anchor pole light are offered on the arch tray 4
Sliding free end 7 passes through arch tray 4, and the tape contracting box 61 is fixed at the tape contracting box notch 41 of arch tray 4, will
Arch tray 4 is designed as arch, has good mechanical property；The arch tray 4 is contacted with country rock, by screwing when use
Nut 1 applies pretightning force to anchor pole, is in close contact arch tray 4 and country rock.
It should be noted that a kind of large deformation tunnel pressure-relieving achor bar that can measure pressure from surrounding rock, at work, by strength bar
The spiral lamination anchored end 8 of body is embedded in anchoring body, since the smooth free end 7 of anchor pole sequentially passes through the arch support of arch tray 4
Center hole 42, tower-shaped spring 5, the steel plate tray center hole 32 of high strength steel sheet tray 3, rigid washer 2, tower-shaped spring 5, arch
Shape tray center hole 42 and nut 1, when large deformation occurs for country rock, pressure from surrounding rock acts on arch tray 4 and squeezes tower-shaped bullet
Spring 5 compresses the small end head spring ring 51 of tower-shaped spring 5 to big end spring ring 52, and tower-shaped spring 5 is final compressible at cake
Shape, in the process, country rock are controlledly deformed, and part discharges pressure from surrounding rock, as the decrement of tower-shaped spring 5 increases
Add, the Support Resistance that anchor pole provides incrementally increases, and realizes that the large deformation of " put anti-binding, first allow and resist afterwards, is rigid after first soft " controls reason
It reads, promotes anchor pole to the adaptability of country rock large deformation；When country rock occur large deformation when, pressure from surrounding rock act on arch tray 4,
During squeezing tower-shaped spring 5, the monitoring tape 6 between high strength steel sheet tray 3 and arch tray 4 is gradually straightened, thus real
When measure and allow pressure amount (that is, amount of spring compression), unlike material, specification tower-shaped spring " pressure from surrounding rock-allow pressure amount " curve
Simulation can be tested indoors to obtain, in conjunction with the rock deformation that the technical program scene measures, can obtain real-time pressure from surrounding rock
And surrouding rock deformation, calculate area (the i.e. energy release of surrounding rock of " pressure from surrounding rock-surrouding rock deformation " between curve and abscissa line
Amount), and then energy release of surrounding rock amount is obtained, wherein being able to achieve bigger enclose compared with column spring using tower-shaped spring assembly
Rock deformation release.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. one kind can measure the large deformation tunnel pressure-relieving achor bar of pressure from surrounding rock, including the strength body of rod, tower-shaped spring assembly and monitoring
Tape component, which is characterized in that the strength body of rod has the smooth free end of anchor pole (7) and spiral lamination anchored end (8), described strong
The power body of rod is equipped with arch tray (4), monitoring tape component (6), high strength steel sheet tray (3), rigid washer (2) and nut
(1), the spiral lamination anchored end (8) is embedded in anchoring body, and the smooth free end of anchor pole (7) passes through arch tray (4), tower
Shape spring (5), high strength steel sheet tray (3), rigid washer (2) and nut (1), the rigid washer (2) are placed in high strength steel
Between sheet tray (3) and nut (1), the tower-shaped spring assembly is formed by tower-shaped spring (5), and one end of tower-shaped spring (5)
For small end head spring ring (51), the other end of the tower-shaped spring (5) is big end spring ring (52), the small end head spring ring
(51) it is weldingly fixed on arch tray (4), the big end spring ring (52) is weldingly fixed on high strength steel sheet tray (3)
On, the monitoring tape component includes that monitoring tape (6), tape contracting box (61) and tape end are buckled (62), and the monitoring is soft
One end of ruler (6) is equipped with tape contracting box (61), and the tape end button (62) is mounted on the other end of monitoring tape (6),
The monitoring tape component is mounted between high strength steel sheet tray (3) and arch tray (4).
2. the large deformation tunnel pressure-relieving achor bar that one kind according to claim 1 can measure pressure from surrounding rock, it is characterised in that: institute
It states high strength steel sheet tray (3) and is equipped with monitoring tape perforation (31) and steel plate tray center hole (32), in the steel plate pallet
Heart hole (32) is provided at the center of high strength steel sheet tray (3).
3. the large deformation tunnel pressure-relieving achor bar that one kind according to claim 2 can measure pressure from surrounding rock, it is characterised in that: institute
The position and monitoring tape (6) for stating monitoring tape perforation (31) match, and monitor tape (6) and pass through monitoring tape perforation
(31).
4. the large deformation tunnel pressure-relieving achor bar that one kind according to claim 1 can measure pressure from surrounding rock, it is characterised in that: institute
It states and offers tape contracting box notch (41) and arch tray centre bore (42) on arch tray (4), the smooth freedom of anchor pole
(7) are held to pass through arch tray (4).
5. the large deformation tunnel pressure-relieving achor bar that one kind according to claim 1 can measure pressure from surrounding rock, it is characterised in that: institute
Tape contracting box (61) is stated to be fixed at the tape contracting box notch (41) of arch tray (4).
6. the large deformation tunnel pressure-relieving achor bar that one kind according to claim 1 can measure pressure from surrounding rock, it is characterised in that: institute
Arch tray (4) is stated to contact with country rock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910524062.5A CN110195608A (en) | 2019-06-18 | 2019-06-18 | A kind of large deformation tunnel pressure-relieving achor bar measuring pressure from surrounding rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910524062.5A CN110195608A (en) | 2019-06-18 | 2019-06-18 | A kind of large deformation tunnel pressure-relieving achor bar measuring pressure from surrounding rock |
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| Publication Number | Publication Date |
|---|---|
| CN110195608A true CN110195608A (en) | 2019-09-03 |
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ID=67754668
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910524062.5A Pending CN110195608A (en) | 2019-06-18 | 2019-06-18 | A kind of large deformation tunnel pressure-relieving achor bar measuring pressure from surrounding rock |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863851A (en) * | 2019-12-17 | 2020-03-06 | 大连理工大学 | Constant-resistance large-deformation bamboo joint type anchor rod with alternate positive and negative Poisson ratios |
| CN111594243A (en) * | 2020-06-09 | 2020-08-28 | 河海大学 | Drainage type grading yielding anchor rod capable of measuring deformation |
| CN111608710A (en) * | 2020-06-09 | 2020-09-01 | 河海大学 | Full-length hollow drainage resistance-increasing type yielding anchor rod |
| CN111764943A (en) * | 2020-07-08 | 2020-10-13 | 中国电建集团昆明勘测设计研究院有限公司 | Drainable self-drilling grading yielding anchor rod and supporting method thereof |
| 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 |
| CN112360528A (en) * | 2020-10-27 | 2021-02-12 | 国网经济技术研究院有限公司 | Surrounding rock anchoring supporting structure with controllable anchoring force and large deformation adaptability |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111594243A (en) * | 2020-06-09 | 2020-08-28 | 河海大学 | Drainage type grading yielding anchor rod capable of measuring deformation |
| CN111608710A (en) * | 2020-06-09 | 2020-09-01 | 河海大学 | Full-length hollow drainage resistance-increasing type yielding anchor rod |
| CN111764943A (en) * | 2020-07-08 | 2020-10-13 | 中国电建集团昆明勘测设计研究院有限公司 | Drainable self-drilling grading yielding anchor rod and supporting method thereof |
| 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 |
| CN111946377B (en) * | 2020-09-14 | 2024-05-10 | 中国矿业大学 | End anchoring enhancement type yielding anchor rod device and application method thereof |
| CN112360528A (en) * | 2020-10-27 | 2021-02-12 | 国网经济技术研究院有限公司 | Surrounding rock anchoring supporting structure with controllable anchoring force and large deformation adaptability |
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