CN104831724B - Large deformation anchor - Google Patents
Large deformation anchor Download PDFInfo
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- CN104831724B CN104831724B CN201510228213.4A CN201510228213A CN104831724B CN 104831724 B CN104831724 B CN 104831724B CN 201510228213 A CN201510228213 A CN 201510228213A CN 104831724 B CN104831724 B CN 104831724B
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- anchor
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- large deformation
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Abstract
The invention discloses a kind of large deformation anchor, including anchor body and allow press mechanism, allow press mechanism in compression cylinder structure and including inner cylinder body, outer cylinder body, cylinder cap, piston ring and piston rod；Inner cylinder body is hollow cylinder, and cylinder cap is annular in shape and provided with the rod aperture passed through for piston rod, and anchor body is passed through from the hollow part and cylinder cap of inner cylinder body and linked with piston rod；Inner cylinder body, the working chamber of outer cylinder body and cylinder cap Formation cross-section in a ring, piston ring are located in working chamber, and the top of piston ring is connected with piston rod, be provided with compressed media between bottom and working chamber bottom, and piston rod is passed from rod aperture and can moved under the drive of anchor body；The bottom of inner cylinder body is provided with the safety valve for being provided with pressure release passage, pressure release passage and can automatically turning on and close according to preset pressure value；The large deformation anchor of the present invention, the deflection allowed is larger, and bearing capacity is high, and constant resisting force disclosure satisfy that country rock large deformation needs.
Description
Technical field
The present invention relates to a kind of Geotechnical Engineering anchor, more particularly to a kind of large deformation anchor.
Background technology
Anchor includes anchor pole and anchor cable, is the most frequently used Geotechnical Engineering anchor structure, has substantial amounts of application in fields such as slope support engineering, tunnel surrounding supporting, mining tunnel supportings；The anchor body (body of rod or cable body) of traditional anchor substantially belongs to rigid structure, small to the Tolerance of deformation；Rock-mass quality is poor, deflection it is big in the case of, and during the dynamic loading such as earthquake, blasting vibration, anchor body be pulled off in turn result in engineering unstable failure phenomenon it is very many；The situation of earthquake, blasting load effect and country rock large deformation is tackled, use can allow that the anchor body of large deformation is preferable engineered solution；At present, have by anchor body own material ductility to provide the new anchor of large deformation, this kind of anchor structure and common bolt difference are little, but the ductility to material requires high, and the deflection allowed is general still smaller, bearing capacity is low, and resistance is non-constant, it is impossible to meet country rock large deformation needs.
It is therefore desirable to which a kind of large deformation anchor, the deflection that it is allowed is larger, bearing capacity is high, and constant resisting force disclosure satisfy that country rock large deformation needs.
The content of the invention
In view of this, it is an object of the invention to provide a kind of large deformation anchor, the deflection that it is allowed is larger, and bearing capacity is high, and constant resisting force disclosure satisfy that country rock large deformation needs.
The large deformation anchor of the present invention, including anchor body and being located on anchor body are used to allowing the press mechanism that allows of pressure, described to allow press mechanism in compression cylinder structure and including inner cylinder body, outer cylinder body, cylinder cap, piston ring and piston rod；The inner cylinder body is hollow cylinder, and the cylinder cap is annular in shape and provided with the rod aperture passed through for piston rod, and the anchor body is passed through from the hollow part and cylinder cap of inner cylinder body and linked with piston rod；The inner cylinder body, the working chamber of outer cylinder body and cylinder cap Formation cross-section in a ring, the piston ring is located in working chamber, the top of the piston ring is connected with piston rod, compressed media is provided between bottom and working chamber bottom, and the piston rod is passed from rod aperture and can moved under the drive of anchor body；The bottom of the inner cylinder body is provided with the safety valve for being provided with pressure release passage, the pressure release passage and can automatically turning on and close according to preset pressure value.
Further, described to allow press mechanism also including connection ring, the top of the piston rod is fixedly connected with connection ring.
Further, free segment one end of the anchor body is provided with external screw thread and is connected with the spiro connecting piece being engaged, and the spiro connecting piece is located at the outside of connection ring；Spiro connecting piece drives piston rod movement by extruding connection ring when rock mass deformation produces axial tension to anchor body.
Further, pad is provided between the spiro connecting piece and connection ring.
Further, the compressed media is liquid；The assembly also includes the liquid storage box for being used to store the compressed media flowed out from pressure release passage.
Further, the assembly also includes warning system, and the warning system includes processor, alarm and the liquid level sensor located at liquid storage box, and the alarm and liquid level sensor are connected with processor；The liquid level of compressed media and liquid level signal is reached into processor in liquid level sensor detection liquid storage box, the processor controls the keying of alarm.
Further, the warning system also includes the wireless communication module being connected with processor, and liquid level signal is reached external terminal by the wireless communication module by corresponding cordless communication network.
Further, the piston ring is connected with the equally distributed piston rod of 2-8 roots.
Further, the peripheral part of the anchor body anchoring section, which is provided with, is used to stop the block piece that Anchor Agent flows out from jewel hole, and the block piece is enclosed within anchor body and coaxial with anchor body.
Further, the block piece is in boss-shaped, and the miner diameter end of boss points to Anchor Agent.
Beneficial effects of the present invention：The large deformation anchor of the present invention, threshold values is opened and closed because safety valve has, when there is large deformation in rock mass, anchor body drives piston ring to be moved along working chamber and extrude compressed media, compressed media pressure exceedes safety valve when opening and closing threshold values and opened, compressed media is leaked so that constrictor is able to be retracted to working chamber, and the anchor body length stretched into rock mass is lengthened, and is reached and is allowed the effect of compressive strain；Deflection can need and set according to rock mass deformation, and controlled range is big；Safety valve is closed when compressed media pressure decreases below keying threshold values, reaches the effect of auto Deformation；It is constant due to opening and closing threshold values so that the resistance for allowing press mechanism to provide is stable；Meanwhile, allow the deformation of press mechanism to be non-damaged deformation, can reuse, advantageously reduce use cost；The deflection that the present invention allows is larger, and bearing capacity is high, and constant resisting force disclosure satisfy that country rock large deformation needs.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is structural representation of the invention；
Fig. 2 is the top view of the cylinder cap of the present invention；
Fig. 3 is the structural representation of the warning system of the present invention.
Embodiment
Fig. 1 is the structural representation of the present invention, and Fig. 2 is the top view of the cylinder cap of the present invention, as shown in the figure：The large deformation anchor of the present embodiment, including anchor body 1 and being located on anchor body 1 are used to allowing the press mechanism that allows of pressure, described to allow press mechanism in compression cylinder structure and including inner cylinder body 21, outer cylinder body 22, cylinder cap 23, piston ring 24 and piston rod 25；The inner cylinder body 21 is hollow cylinder, and the cylinder cap 23 is annular in shape and provided with the rod aperture 23b passed through for piston rod 25, and the anchor body 1 is passed through from the hollow part of inner cylinder body 21 and the via 23a of cylinder cap 23 and linked with piston rod 25；The inner cylinder body 21, the working chamber 2a of outer cylinder body 22 and the Formation cross-section of cylinder cap 23 in a ring, the piston ring 24 is located in working chamber 2a, the top of the piston ring 24 is connected with piston rod 25, compressed media 26 is provided between bottom and working chamber 2a bottoms, and the piston rod 25 is passed from rod aperture 23b and can moved under the drive of anchor body 1；The bottom of the inner cylinder body 21 is provided with the safety valve 27 for being provided with pressure release passage 211, the pressure release passage 211 and can automatically turning on and close according to preset pressure value；Anchor body 1 can be the cable body that the body of rod or multiply steel strand wires being made up of fiberglass are made；Cylinder cap 23 can be corresponding with the hollow cavity segment of inner cylinder body 21 provided with via 23a, and anchor body 1 is passed through from the via 23a of cylinder cap 23；Allow press mechanism also including some necessary seal (not shown)s, sealing structure is consistent with prior art, will not be repeated here；Cylinder cap 23 is covered sets some rod aperture 23b so that piston rod 25 passes through on the top of inner cylinder body 21, outer cylinder body 22, cylinder cap 23；In use, inner cylinder body 21 can be pressed in the wall of rock mass 3, instead of traditional pallet, simplify structure, reduce cost；Safety valve 27 is automatic valve, can be according to pressure automatic switch；Threshold values is opened and closed because safety valve 27 has, when there is large deformation in rock mass 3, anchor body 1 drives piston ring 24 to be moved along working chamber 2a and extrude compressed media 26, the pressure of compressed media 26 exceedes safety valve 27 when opening and closing threshold values and opened, compressed media 26 is leaked so that constrictor is able to be retracted to working chamber 2a, the extended length of anchor body 1 stretched into rock mass 3, reaches and allows the effect of compressive strain；Deflection can be deformed according to rock mass 3 to be needed and sets, and controlled range is big；Safety valve 27 is closed when the pressure of compressed media 26 decreases below keying threshold values, reaches the effect of auto Deformation；It is constant due to opening and closing threshold values so that the resistance for allowing press mechanism to provide is stable；Meanwhile, allow the deformation of press mechanism to be non-damaged deformation, can reuse, advantageously reduce use cost；The deflection that this anchor pole assembly is allowed is larger, and bearing capacity is high, and constant resisting force disclosure satisfy that country rock large deformation needs.
In the present embodiment, described to allow press mechanism also including connection ring 28, the top of the piston rod 25 is fixedly connected with connection ring 28；The piston ring 24 can be connected with 2-8 roots piston rod 25, and rod aperture 23b quantity is corresponding with the quantity of piston rod 25；Each piston rod 25 is preferably to be uniformly distributed, i.e. rod aperture 23b is evenly distributed on cylinder cap 23 in circumferential；Each piston rod 25 is fixedly connected with connection ring 28 after the stretching of cylinder cap 23 and for example weld or be spirally connected so that each piston rod 25 can keep being synchronized with the movement, and improves the stability of compression cylinder effect.
In the present embodiment, free segment one end of the anchor body 1 is provided with external screw thread and is connected with the spiro connecting piece 4 being engaged, and the spiro connecting piece 4 is located at the outside of connection ring 28；Rock mass 3 deforms spiro connecting piece 4 when producing axial tension to anchor body 1 drives piston rod 25 to move by extruding connection ring 28；Spiro connecting piece 4 is preferably nut；Between the spiro connecting piece 4 and connection ring 28 can be provided with pad 5, pad 5 also in annular shape, thereon, following table area be not less than relative spiro connecting piece 4, the surface area of connection ring 28, it is ensured that the transmission effect of power, reduce connection ring 28 abrasion；The screw propulsion of spiro connecting piece 4 can make to allow press mechanism to be close to rock mass 3, form certain pretightning force while fixing this assembly to rock mass 3, improve anchoring effect, but also can manually adjust completion and allow pressure；Because anchor body 1 is relatively fixed with spiro connecting piece 4, the deformation of rock mass 3 will form pulling force to anchor body 1, pulling force passes sequentially through spiro connecting piece 4, the connection ring 28 of pad 5 and piston rod 25 and is delivered to piston ring 24, piston ring 24 extrudes compressed media 26, the pressure of compressed media 26 exceedes safety valve 27 when opening and closing threshold values and opened, compressed media 26 is leaked so that constrictor is able to be retracted to working chamber 2a, the extended length of anchor body 1 stretched into rock mass 3, is reached and is allowed the effect of compressive strain.
In the present embodiment, the compressed media 26 is liquid；The assembly also includes the liquid storage box 6 for being used to store the compressed media 26 flowed out from pressure release passage 211；Using liquid as compressed media 26, pressure limit is big, high transmission accuracy, it is to avoid the improper movement of anchor body 1；The liquid can be hydraulic oil or emulsion；Liquid storage box 6 is conducive to the recycling of compressed media 26, it is to avoid pollution environment, reduces use cost；Woven hose can be set between pressure release passage 211 and liquid storage box 6；Liquid storage box 6 can peripheral hardware, can also removably be connected on outer cylinder body 22.
As shown in figure 3, in the present embodiment, the assembly also includes warning system, the warning system includes processor 71, alarm 72 and the liquid level sensor 73 located at liquid storage box 6, and the alarm 72 and liquid level sensor 73 are connected with processor 71；The liquid level of compressed media 26 and liquid level signal is reached into processor 71 in the liquid level sensor 73 detection liquid storage box 6, the processor 71 controls the keying of alarm 72；Processor 71 can be single-chip microcomputer；Alarm 72 can be audible-visual annunciator 72；Should ensure that when setting liquid storage box 6 compressed media 26 in liquid storage box 6 liquid level can to allow press mechanism make pressure degree related; once occurring allowing reduce off-flavor often or starting alarm 72 beyond warning line being warned, prevent from damaging surrounding people because of the abnormal motion of rock mass 3；In the present embodiment, the warning system also includes the wireless communication module 74 being connected with processor 71, and liquid level signal is reached external terminal 76 by the wireless communication module 74 by corresponding cordless communication network 75；The line of wireless communication module 74 can be gsm module, GPRS module, CDMA module, 3G nets module or 4G net modules, and cordless communication network 75 is the GSM network corresponding with wireless communication module 74, GPRS network, cdma network, 3G network or 4G networks；External terminal 76 is the corresponding mobile phone or computer for accessing GSM network, GPRS network, cdma network, 3G network or 4G networks；Monitoring in real time is realized, the validity of early warning is improved；In addition, the power module 77 for being powered to each power unit also can be set in warning system, power module 77 is connected with processor 71, and power module 77 can be general dry battery or Li-Ion rechargeable battery or nickel-hydrogen chargeable cell or solar energy charging battery.
In the present embodiment, the peripheral part of the anchoring section of anchor body 1, which is provided with, to be used to stop the block piece 8 that Anchor Agent 9 flows out from jewel hole, and the block piece 8 is enclosed within anchor body 1 and coaxial with anchor body 1；The external diameter of block piece 8 is more smaller than jewel hole, it is ensured that stretching into and effective stop to Anchor Agent 9 for block piece 8, prevents that Anchor Agent 9 from flowing out before solidification from jewel hole；The block piece 8 can be in boss-shaped, and the miner diameter end of boss points to Anchor Agent 9, is easy to stretching into for block piece 8.
What is finally illustrated is, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although the present invention is described in detail with reference to preferred embodiment, it will be understood by those within the art that, technical scheme can be modified or equivalent, without departing from the objective and scope of technical solution of the present invention, it all should cover among scope of the presently claimed invention.
Claims (8)
1. a kind of large deformation anchor, including anchor body and being located at is used to allowing the press mechanism that allows of pressure on anchor body, it is characterised in that：It is described to allow press mechanism in compression cylinder structure and including inner cylinder body, outer cylinder body, cylinder cap, piston ring and piston rod；The inner cylinder body is hollow cylinder, and the cylinder cap is annular in shape and provided with the rod aperture passed through for piston rod, and the anchor body is passed through from the hollow part and cylinder cap of inner cylinder body and linked with piston rod；The inner cylinder body, the working chamber of outer cylinder body and cylinder cap Formation cross-section in a ring, the piston ring is located in working chamber, the top of the piston ring is connected with piston rod, compressed media is provided between bottom and working chamber bottom, and the piston rod is passed from rod aperture and can moved under the drive of anchor body；The bottom of the inner cylinder body is provided with the safety valve for being provided with pressure release passage, the pressure release passage and can automatically turning on and close according to preset pressure value；The compressed media is liquid；The large deformation anchor also includes being used for the liquid storage box and warning system that store the compressed media flowed out from pressure release passage, the warning system includes processor, alarm and the liquid level sensor located at liquid storage box, and the alarm and liquid level sensor are connected with processor；The liquid level of compressed media and liquid level signal is reached into processor in liquid level sensor detection liquid storage box, the processor controls the keying of alarm.
2. large deformation anchor according to claim 1, it is characterised in that：Described to allow press mechanism also including connection ring, the top of the piston rod is fixedly connected with connection ring.
3. large deformation anchor according to claim 2, it is characterised in that：Free segment one end of the anchor body is provided with external screw thread and is connected with the spiro connecting piece being engaged, and the spiro connecting piece is located at the outside of connection ring；Spiro connecting piece drives piston rod movement by extruding connection ring when rock mass deformation produces axial tension to anchor body.
4. large deformation anchor according to claim 3, it is characterised in that：Pad is provided between the spiro connecting piece and connection ring.
5. large deformation anchor according to claim 1, it is characterised in that：The warning system also includes the wireless communication module being connected with processor, and liquid level signal is reached external terminal by the wireless communication module by corresponding cordless communication network.
6. large deformation anchor according to claim 4, it is characterised in that：The piston ring is connected with the equally distributed piston rod of 2-8 roots.
7. the large deformation anchor according to any one of claim 1 to 6, it is characterised in that：The peripheral part of the anchor body anchoring section, which is provided with, to be used to stop the block piece that Anchor Agent flows out from jewel hole, and the block piece is enclosed within anchor body and coaxial with anchor body.
8. large deformation anchor according to claim 7, it is characterised in that：The block piece is in boss-shaped, and the miner diameter end of boss points to Anchor Agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510228213.4A CN104831724B (en) | 2015-05-07 | 2015-05-07 | Large deformation anchor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510228213.4A CN104831724B (en) | 2015-05-07 | 2015-05-07 | Large deformation anchor |
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| Publication Number | Publication Date |
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| CN104831724A CN104831724A (en) | 2015-08-12 |
| CN104831724B true CN104831724B (en) | 2016-06-29 |
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| CN201510228213.4A Active CN104831724B (en) | 2015-05-07 | 2015-05-07 | Large deformation anchor |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083980B (en) * | 2017-06-15 | 2023-06-30 | 湖南科技大学 | Surrounding rock disaster early warning method and anchor early warning device for anchor bolt supporting roadway |
| CN108412526B (en) * | 2018-05-14 | 2023-12-15 | 重庆大学 | Self-adaptive hierarchical early warning anchor rod |
| CN109763851B (en) * | 2019-03-28 | 2020-05-22 | 中国矿业大学 | Anchor with anchoring force grading early warning function and reciprocating flexible deformation yielding characteristic and method |
| CN109899098B (en) * | 2019-03-29 | 2024-04-30 | 中铁第四勘察设计院集团有限公司 | Anti-seismic pressure-limiting anchor rod anchor head |
| CN114575906A (en) * | 2022-03-12 | 2022-06-03 | 北京工业大学 | Energy dissipation lets presses anchor backing plate |
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|---|---|---|---|---|
| CN102359386A (en) * | 2011-10-28 | 2012-02-22 | 湖南科技大学 | Shearing sleeve type yielding bolt |
| CN103016035A (en) * | 2012-12-27 | 2013-04-03 | 辽宁工程技术大学 | Abdicating buffer energy-absorbing shock-proof anchor rod cable for coal mine |
| CN103573279A (en) * | 2013-11-14 | 2014-02-12 | 山东科技大学 | Mining telescopic energy adsorption anti-impact viscous damping anchor rod and supporting method thereof |
| CN104373145A (en) * | 2014-11-04 | 2015-02-25 | 中国矿业大学 | Anchor device with functions of embedding, constant-resistance classifying, shear resisting and large deforming and method |
| CN104481565A (en) * | 2014-12-10 | 2015-04-01 | 重庆大学 | Pressure-dispersive large-deformation self-adaptive anchor bolt |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858225B (en) * | 2010-06-10 | 2011-10-12 | 北京中矿深远能源环境科学研究院 | Constant resistance and large deformation anchor rod |
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2015
- 2015-05-07 CN CN201510228213.4A patent/CN104831724B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359386A (en) * | 2011-10-28 | 2012-02-22 | 湖南科技大学 | Shearing sleeve type yielding bolt |
| CN103016035A (en) * | 2012-12-27 | 2013-04-03 | 辽宁工程技术大学 | Abdicating buffer energy-absorbing shock-proof anchor rod cable for coal mine |
| CN103573279A (en) * | 2013-11-14 | 2014-02-12 | 山东科技大学 | Mining telescopic energy adsorption anti-impact viscous damping anchor rod and supporting method thereof |
| CN104373145A (en) * | 2014-11-04 | 2015-02-25 | 中国矿业大学 | Anchor device with functions of embedding, constant-resistance classifying, shear resisting and large deforming and method |
| CN104481565A (en) * | 2014-12-10 | 2015-04-01 | 重庆大学 | Pressure-dispersive large-deformation self-adaptive anchor bolt |
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| CN104831724A (en) | 2015-08-12 |
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