CN107083772A - A kind of internal resistance type metal shearing resistance pressure-release anchor cable device - Google Patents
A kind of internal resistance type metal shearing resistance pressure-release anchor cable device Download PDFInfo
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- CN107083772A CN107083772A CN201710381302.1A CN201710381302A CN107083772A CN 107083772 A CN107083772 A CN 107083772A CN 201710381302 A CN201710381302 A CN 201710381302A CN 107083772 A CN107083772 A CN 107083772A
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- anchor cable
- pressure ring
- shearing resistance
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- 239000002184 metal Substances 0.000 title claims abstract description 196
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 196
- 238000010008 shearing Methods 0.000 title claims abstract description 50
- 239000011435 rock Substances 0.000 claims abstract description 58
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 53
- 239000010959 steel Substances 0.000 claims abstract description 53
- 239000011248 coating agent Substances 0.000 claims abstract description 40
- 238000000576 coating method Methods 0.000 claims abstract description 40
- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 4
- 230000006378 damage Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 9
- 238000005260 corrosion Methods 0.000 claims description 4
- 238000004873 anchoring Methods 0.000 claims description 2
- 230000009471 action Effects 0.000 abstract description 5
- 230000001012 protector Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 12
- 238000005553 drilling Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000001687 destabilization Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 235000021186 dishes Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 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
- E21D21/0046—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts formed by a plurality of elements arranged longitudinally
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
Abstract
The invention discloses a kind of internal resistance type metal shearing resistance pressure-release anchor cable device, including fixed anchor head, shearing resistance allows pressure device and anchor cable lock, fixed anchor head is arranged in country rock, it is connected by some steel strand wires with being arranged on the anchor cable lock of wall rock drill-hole port, anchor cable lock is used to allow shearing resistance pressure device to apply pretightning force formation anchor structure, shearing resistance allows pressure device to be arranged on steel strand wires, including metal coating sleeve and metal by pressure ring, metal protection protector jacket casing is in the borehole port of the country rock, the metal is arranged in metal coating sleeve by pressure ring, one end of steel strand wires is connected through metal by pressure ring with fixed anchor head, the other end is connected with being arranged on the metal deceleration head of wall rock drill-hole port, the rock mass deformation energy of country rock is lost by the metal by pressure ring by shear compression failure for metal deceleration head.Whole device possesses deep rock mass control, prevents rock stratum absciss layer deformation, shearing resistance, the classification multiple action such as constant-resistance, with install convenient, performance is stable, it is easy to spread the features such as.
Description
Technical field
The invention belongs to Geotechnical Engineering support apparatus, and in particular to the shearing resistance of particulate metal material deforms pressure-release anchor cable structure,
Suitable for the field supporting of the correlation engineering such as coal mine roadway, tunnel, side slope, foundation ditch and bracing means and method.
Background technology
In Geotechnical Engineering, Tunnel Engineering, the supporting of slope project common support apparatus be anchor pole and anchor cable, it is traditional
Support apparatus is often due to the limitation of material and structure is all to use rigid structure, the elongation percentage of anchor pole and the tension pull out force of anchor cable
All limit, more developed for rock cranny, the phenomenons such as supporting failure often occurs in the larger geological conditions of deformation failure,
The dangerous condition such as wall rock destabilization is caused, urgent need solves the problems, such as engineering support using the anchor pole/rope for the power consumption that can allow large deformation.
Existing large deformation anchor rod/rope is functionally broadly divided into two kinds：One kind is as bar using special flexible material
Body and anchor cable structure body, using the special attribute of flexible material, in ultimate strength, can allow for larger distorting load, this
The ductility of class material typically requires higher, and cost is relatively large；Equations of The Second Kind is to install special resistance to compression additional in anchor pole and anchor cable
Structure, under the body of rod and anchor cable stress drawing condition, is lost the deformation energy of rock mass, so that anchor using friction or resistance to compression
Bar/rope produces the effect of easing stress such as constant-resistance or variable resistance.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of internal resistance type gold
Belong to shearing resistance pressure-release anchor cable device, it is to avoid rock mass large deformation is allowed using anchor pole/rope of special material design.
The present invention uses following technical scheme：
A kind of internal resistance type metal shearing resistance pressure-release anchor cable device, including fixed anchor head, shearing resistance allow pressure device and anchor cable lock,
The fixed anchor head is arranged in country rock, passes through some steel strand wires and the anchor cable lock for being arranged on the wall rock drill-hole port
Connection, the anchor cable lock is used to allow the shearing resistance pressure device to apply pretightning force formation anchor structure, and the shearing resistance, which allows, to be press-fited
Put and be arranged on the steel strand wires, including metal coating sleeve and metal are by pressure ring, the metal protection protector jacket casing is mounted in described
In the borehole port of country rock, the metal is arranged in the metal coating sleeve by pressure ring, and one end of the steel strand wires is passed through
The metal is connected by pressure ring with the fixed anchor head, the other end and the metal deceleration head company for being arranged on the wall rock drill-hole port
Connect, the rock mass deformation energy of the country rock is lost by the metal by pressure ring by shear compression failure for the metal deceleration head.
Further, the metal is disposed in the metal coating sleeve, the metal by pressure ring including multiple
The outer wall of protection sleeve is provided with point-like and corrugated decorative pattern and is enclosed with anti-corrosion material.
Further, the metal is equal to the diameter of the steel strand wires by the orifice diameter of pressure ring.
Further, the metal deceleration head is cylindrical structure, highly more than thickness of the metal by pressure ring.
Further, the diameter of the metal deceleration head is more than aperture of the metal by pressure ring, is protected less than the metal
The diameter of pretective sleeve pipe.
Further, the metal deceleration head is hard steel, passes through the steel strand wires and consolidating on the fixed anchor head
Fixed end head connection.
Further, it is provided with backing plate between the metal coating sleeve and the anchor cable lock.
Further, the metal is calculated as follows by the thickness L of pressure ring：
A=π DL
Wherein, A is failure by shear area, and L is that shear distance is metal by pressure ring thickness, and D is metal deceleration device diameter.
Further, the metal is calculated as follows by the radius R of pressure ring：
Wherein, AbsFor extruding damage area, d is metal by pressure ring bore dia.
Further, the metal becomes by the axial stress of pressure ring turns to the 30~90% of anchorage cable anchoring power.
Compared with prior art, the present invention at least has the advantages that：
A kind of internal resistance type metal shearing resistance pressure-release anchor cable device of the present invention, fixed anchor head is arranged in country rock, passes through steel strand wires
It is connected with the anchor cable lock for being arranged on wall rock drill-hole port, shearing resistance allows pressure device to be arranged on steel strand wires, anchor cable lock is to shearing resistance
Pressure device is allowed to apply pretightning force formation anchor structure, shearing resistance allows pressure device to include metal coating sleeve and metal by pressure ring, metal
Deceleration head is contacted under tension of steel strand effect with the metal in metal sleeve by pressure ring, metal deceleration head and steel strand wires by
The pulling force effect that rock mass damage is produced, to metal sleeve internal motion, action time is shorter, can produce failure by shear, and loss becomes
Shape energy, metal is produced destruction by pressure ring by the metal deceleration head shearing of axial tension action, classification time loss rock mass
Deformation energy, which reaches, allows pressure effect.
Further, applying mortar carries out preservative treatment on metal coating sleeve outer wall, or by metal coating sleeve
Outer wall is set to point-like and corrugated combination decorative pattern to increase frictional resistance.
Further, metal is equal to the diameter of steel strand wires by the orifice diameter of pressure ring, it is to avoid steel strand wires are in metal by pressure ring
Place produces winding because pore size is not waited, and causes the unbalance stress of steel strand wires local segment, and then influence tension effect.
Further, metal deceleration head is cylindrical structure, highly more than thickness of the metal by pressure ring, and diameter is more than metal
Allow the aperture of pressure ring, less than the diameter of metal coating sleeve, metal deceleration head is with allowing pressure ring to produce under tension of steel strand effect
After failure by shear, pulling force is caused to reduce, the metal deceleration head inwardly moved by metal sleeve is again with allowing pressure ring time of contact
It is longer, extruding destruction, the axial tension effect of reduction steel strand wires can be produced.
Further, metal coating sleeve and metal by pressure ring be one-shot forming pour, it is necessary to mould and process equipment
Intensity is not high, reduces investment of production cost, and irregularity intensity of the metal that one-time-concreting is molded by pressure ring in sleeve is high
It is not easy to break.
Further, the present invention utilizes the embedded classification shearing resistance constant resistance and large deformation characteristic, it is adaptable to deep wall rock absciss layer
Deformation requirements, and the combining structure being made up of metal sleeve and backing plate improves the shearing resistance deformation for section anchor cable body of eating dishes without rice or wine, whole dress
Put and possess deep rock mass control, the multiple actions such as rock stratum absciss layer deformation, shearing resistance, classification constant-resistance are prevented, with install convenient, performance
Stable, easy to spread the features such as.
In summary, design operation of the present invention is practical and convenient, stable and reliable for performance, with low cost, recyclable and suitable
The support apparatus of large deformation rock mass.
Below by drawings and examples, technical scheme is described in further detail.
Brief description of the drawings
Fig. 1 is that metal deceleration head of the present invention deforms force diagram in axial tension state down cut；
Fig. 2 is metal deceleration head of the present invention crimp force diagram under axial tension state；
Fig. 3 is internal resistance type metal shearing resistance pressure-release anchor cable structure and scheme of installation in embodiment one；
Fig. 4 is internal resistance type metal shearing resistance pressure-release anchor cable structure and scheme of installation in embodiment two；
Fig. 5 is internal resistance type metal shearing resistance pressure-release anchor cable structure and scheme of installation in embodiment three；
Fig. 6 is that shearing resistance of the present invention allows pressure device enlarged diagram.
Wherein：1. fix anchor head；2. fix termination；3. country rock；4. steel strand wires；5. metal is by pressure ring；6. metal protection protector
Cylinder；7. backing plate；8. metal deceleration head；9. anchor cable lock.
Embodiment
In the description of the invention, it is to be understood that term " on ", " under ", " vertical ", " level ", " top ", " bottom ",
The orientation or position relationship of the instructions such as " interior ", " outer " are, based on orientation shown in the drawings or position relationship, to be for only for ease of and retouch
State the present invention and simplify description, rather than indicate or imply that the device or element of meaning there must be specific orientation, with specific
Azimuth configuration and operation, therefore be not considered as limiting the invention.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
The invention provides a kind of internal resistance type metal shearing resistance pressure-release anchor cable device, deform what is produced using metal material shearing resistance
Resistance ability realizes the anchor cable device by compressive strain function.When country rock deforms delamination fractures, the device anchored end does not occur
Destruction, it is allowed to deform absciss layer stretching deceleration device and moved into rock stratum, deceleration device failure by shear compression ring can be with during this
Surrouding rock deformation energy is constantly absorbed, the resistance to overturning and safety of country rock and supporting construction is maintained, and special deceleration device is provided
Certain resistance reaches that anchor cable allows the function of pressure.
Internal resistance type metal shearing resistance pressure-release anchor cable device of the present invention include fixed anchor head 1, steel strand wires 4, shearing resistance allow pressure device with
And anchor cable lock 9, the fixed anchor head 1 is arranged in country rock 3, by the steel strand wires 4 with being arranged on the drill end of country rock 3
The anchor cable lock 9 of mouth is connected, and the anchor cable lock 9 is used to allow the shearing resistance pressure device application pretightning force to form effective anchor
Fixing structure, the shearing resistance allows pressure device to be arranged on the steel strand wires 4.
Wherein, the shearing resistance allows pressure device to include metal coating sleeve 6, metal by pressure ring 5 and metal deceleration first 8, institute
State metal coating sleeve 6 to be sleeved in the borehole port of the country rock 3, the metal is arranged on the metal coating by pressure ring 5
In sleeve 6, one end of the steel strand wires 4 is connected through the metal by pressure ring 5 with the fixed anchor head 1, the other end with it is described
First 8 connection of metal deceleration, as shown in Figure 6.
The diameter of the metal deceleration first 8 is more than aperture of the metal by pressure ring 5, less than the metal coating sleeve 6
Diameter, the metal, which slows down, first 8 passes sequentially through some metals by pressure ring 5, and institute is lost by shear compression failure by pressure ring 5 in metal
State the rock mass deformation energy of country rock 3.
Steel strand wires 4 and metal deceleration first 8 are connected, the metal is equal to the steel strand wires 4 by the orifice diameter of pressure ring 5
Diameter, steel strand wires 4 and the first 8 common stress of metal deceleration.
The fixation termination 2 for being connected with the steel strand wires 4 is provided with the fixed anchor head 1.
Backing plate 7 is provided between the metal coating sleeve 6 and the anchor cable lock 9.
It is preferred that, the metal slows down first 8 for hard steel, such as precipitation-hardening stainless steel, cobalt-base alloys, the metal
The outer wall of protection sleeve 6 is enclosed with anti-corrosion material, such as epoxide coal bituminous corrosion resistant coating, resin anti-corrosive paint.
The metal of use is by pressure ring 5 based on metal deceleration first 8 by metal by thickness L and radius the R design of pressure ring 5
Failure mode is calculated.
There is certain gap by pressure ring 5 in the metal, connecting shearing resistance by steel strand wires 4 allows in metal coating sleeve 6
Pressure device, axial pull should be less than the ultimate strength value of steel strand wires 4.In view of disrumpent feelings larger very fast, the metal to press of country rock 3
Slow down first 8 for metal cylinder, cylinder height is far longer than thickness of the metal by pressure ring 5, simplify metal deceleration first 8 initial stage
For punch device, metal is reduced to steel plate by pressure ring 5, using failure by shear form.
Design is using 22mm steel strand wires, ultimate strength value FSteelFor 400kN, the axial direction in the case of ensureing that steel strand wires are continuous
Failure by shear pulling force is 90 the percent of design load, axial failure by shear pulling force FJIt is calculated as follows：
FJ=FSteel* 90%=360kN
Theoretical according to Metal plasticity mechanics, failure by shear formula is：
Wherein, A is failure by shear area；FJFor failure by shear power；τbStress value is hobbed to be allowable, inquiry data takes
360MPa。
Shear breakage is known for metal cylinder lateral area that lateral area calculation formula is by Fig. 1：
A=π DL
Wherein, L is that shear distance is metal by pressure ring thickness, and D=32mm is metal deceleration device diameter；By calculating
L≈9.95mm。
Rock mass deformation energy, axial tension reduction, when metal deceleration head is contacted with metal by pressure ring are lost by failure by shear
Between it is long, damaged deformation form is changed into extruding destruction from failure by shear, theoretical according to Metal plasticity mechanics, and extruding destruction formula is：
Wherein, AbsFor extruding damage area；Fy=FSteel* 90%=360kN takes steel strand wires maximum weighted to be extruding destructive power；
[σbs] it is extrusion stress value allowable, inquiry data takes 360MPa.
Extrude failure mechanics as shown in Figure 2, be metal ring shape, becket calculation formula is：
Wherein, d be metal by pressure ring bore dia d=22mm, by calculating R ≈ 9.96mm.
Axial compressive force is excessive, with impact, and fluctuation is larger, and the failure by shear of generation and extruding destruction can all produce gold
Belong to chip and metal heat, cause metal shear resistance and compressive property to reduce, effect of easing stress is weakened, in order to ensure the complete of component
It is good, Multilevel Anti-shear resistance to compression is devised, to avoid the destruction produced, two in metal sleeve allow between pressure ring stay and are set to recessed
Groove, is fluctuated for filling up caused by the destruction of metal deceleration head.
Metal deceleration first 8 is mutually fixedly connected with steel strand wires 4 in anchor cable, and first 8 axial tension stress of metal deceleration is carried by steel strand wires 4
For improving axial tension in the case where ensureing the elastic limit of steel strand wires 4, the first 8 pairs of metals of metal deceleration produce axial direction by pressure ring 5
Deformation, the shearing resistance material properties of metal deceleration first 8 are far above metal by pressure ring 5, when axial tension reaches Elasto-plastic Metal material
Elastic limit after, metal material produces failure by shear deformation, certain loss is produced to axial tension, so that anchor structure
Achievement unit spare pressure effect.
Metal in the metal coating sleeve is by pressure ring 5 due to being produced failure by shear, root by axial tension stress effect
According to the difference of country rock breaking strain time, reached using the destruction of nibbling shear step by step and allow pressure effect, anchor is taken in axial stress change
90%, 75%, 60%, 45% and the 30% of rope design load.
Embodiment one
As shown in figure 3, including fixed anchor head 1, fixed termination 2, steel strand wires 4, metal by pressure ring 5, metal coating sleeve 6,
Backing plate 7, metal deceleration first 8 and anchor cable lock 9.
Metal coating sleeve 6 and the integrated shaping of the backing plate in outside 7 are poured, and are beaten using drilling machine in country rock 3
Operation is bored, fixed anchor head 1 is placed in the deep of country rock 3 by drilling, steel strand wires 4 are entered by fixed termination 2 and fixed anchor head 1
Row connection, metal coating sleeve 6 is inserted until outside backing plate 7 blocks orifice position inside country rock 3, by installing anchor cable lock
9 on steel strand wires 4 apply pretightning force after by metal deceleration first 8 be urged to metal by pressure ring 5 at.
To make metal coating sleeve 6 be fixed on the inside of country rock 3, it can also be smeared on the outer wall of metal coating sleeve 6
Mortar, or the outer wall of metal coating sleeve 6 is set to point-like and corrugated combination decorative pattern to increase frictional resistance.
Embodiment two
As shown in figure 4, including fixed anchor head 1, fixed termination 2, steel strand wires 4, metal by pressure ring 5, metal coating sleeve 6,
Backing plate 7, metal deceleration first 8 and anchor cable lock 9.
Operation of drilling is carried out in country rock 3 using drilling machine, fixed anchor head 1 is placed in the deep of country rock 3 by drilling, by steel
Twisted wire 4 is attached by fixed termination 2 and fixed anchor head 1, and metal coating sleeve 6 is inserted into country rock 3 after second reaming operation
Inside, reaming extent length is depending on metal coating length sleeve, until metal coating sleeve 6 is entirely insertable country rock 3, aperture position
Put and installed with backing plate 7 plus anchor cable lock 9, by metal deceleration first 8 is urged into metal after exposed steel strand wires 4 application pretightning force
Allow at pressure ring 5.
Embodiment three
As shown in figure 5, including fixed anchor head 1, fixed termination 2, steel strand wires 4, metal by pressure ring 5, metal coating sleeve 6,
Backing plate 7, metal deceleration first 8 and anchor cable lock 9.
Operation of drilling is carried out in country rock 3 using drilling machine, fixed anchor head 1 is placed in the deep of country rock 3 by drilling, by steel
Twisted wire 4 is attached by fixed termination 2 and fixed anchor head 1, metal coating sleeve 6 is placed at aperture, it is not necessary to carry out again
Ream operation, by exposed steel strand wires 4 apply pretightning force after by metal deceleration first 8 be urged to metal by pressure ring 5 at.
Internal resistance type metal shearing resistance pressure-release anchor cable device of the present invention, metal coating sleeve 6 is inserted into bottom after drilling and installs pad
Plate 7, by metal deceleration first 8 be installed into metal coating sleeve 6 and be squeezed in first metal by pressure ring 5 at, outer end install anchor cable
Lockset 9, and apply pretightning force, effective anchor structure is formed, using the metal deceleration head inside special metal sleeve to metal
The failure by shear of pressure ring is allowed to consume the deformation energy of country rock.
The embedded metal shearing resistance in the supporting of Geotechnical Engineering and association area that what the present invention was provided apply allows pressure anchor
Rope, for occur rock mass deformation hierarchical motion have preferable control action, by metal deceleration head in metal coating sleeve not
With the shearing resistance resistance to compression effect of form, the axial tension of steel strand wires is reduced, reduces rock mass deformation destruction motion, whole device structure is set
Meter is reasonable, easy to use.
The technological thought of above content only to illustrate the invention, it is impossible to which protection scope of the present invention is limited with this, it is every to press
According to technological thought proposed by the present invention, any change done on the basis of technical scheme each falls within claims of the present invention
Protection domain within.
Claims (10)
1. a kind of internal resistance type metal shearing resistance pressure-release anchor cable device, it is characterised in that allow pressure device including fixed anchor head (1), shearing resistance
And anchor cable lock (9), the fixed anchor head (1) is arranged in country rock (3), described with being arranged on by some steel strand wires (4)
The anchor cable lock (9) connection of country rock (3) borehole port, the anchor cable lock (9) is used to allow pressure device to apply the shearing resistance
Plus pretightning force formation anchor structure, the shearing resistance allows pressure device to be arranged on the steel strand wires (4), including metal coating sleeve
(6) and metal is by pressure ring (5), the metal coating sleeve (6) is sleeved in the borehole port of the country rock (3), the metal
Pressure ring (5) is allowed to be arranged in the metal coating sleeve (6), one end of the steel strand wires (4) passes through the metal by pressure ring (5)
It is connected with the fixed anchor head (1), the other end is connected with being arranged on the metal deceleration head (8) of the country rock (3) borehole port, institute
State the rock mass deformation energy that the country rock (3) is lost by the metal by pressure ring (5) by shear compression failure for metal deceleration head (8).
2. a kind of internal resistance type metal shearing resistance pressure-release anchor cable device according to claim 1, it is characterised in that the metal allows
Pressure ring (5) is disposed in the metal coating sleeve (6) including multiple, and the outer wall of the metal coating sleeve (6) is set
There are point-like and corrugated decorative pattern and be enclosed with anti-corrosion material.
3. a kind of internal resistance type metal shearing resistance pressure-release anchor cable device according to claim 2, it is characterised in that the metal allows
The orifice diameter of pressure ring (5) is equal to the diameter of the steel strand wires (4).
4. a kind of internal resistance type metal shearing resistance pressure-release anchor cable device according to claim 1, it is characterised in that the metal subtracts
Kinetic head (8) is cylindrical structure, highly more than thickness of the metal by pressure ring (5).
5. a kind of internal resistance type metal shearing resistance pressure-release anchor cable device according to claim 4, it is characterised in that the metal subtracts
The diameter of kinetic head (8) is more than aperture of the metal by pressure ring (5), less than the diameter of the metal coating sleeve (6).
6. a kind of internal resistance type metal shearing resistance pressure-release anchor cable device according to claim 1, it is characterised in that the metal subtracts
Kinetic head (8) is hard steel, is connected by the steel strand wires (4) with the fixation termination (2) on the fixed anchor head (1).
7. a kind of internal resistance type metal shearing resistance pressure-release anchor cable device according to claim 1, it is characterised in that the metal is protected
Backing plate (7) is provided between pretective sleeve pipe (6) and the anchor cable lock (9).
8. a kind of internal resistance type metal shearing resistance pressure-release anchor cable device according to claim 1, it is characterised in that the metal allows
The thickness L of pressure ring (5) is calculated as follows：
A=π DL
Wherein, A is failure by shear area, and L is that shear distance is metal by pressure ring thickness, and D is metal deceleration device diameter.
9. a kind of internal resistance type metal shearing resistance pressure-release anchor cable device according to claim 8, it is characterised in that the metal allows
The radius R of pressure ring (5) is calculated as follows：
<mrow>
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</mrow>
</msub>
<mo>=</mo>
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<mo>&lsqb;</mo>
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<mrow>
<mo>(</mo>
<mfrac>
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Wherein, AbsFor extruding damage area, d is metal by pressure ring bore dia.
10. a kind of internal resistance type metal shearing resistance pressure-release anchor cable device according to claim 1, it is characterised in that the metal
Allow the axial stress of pressure ring (5) to become and turn to the 30~90% of anchorage cable anchoring power.
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| CN201710381302.1A CN107083772A (en) | 2017-05-25 | 2017-05-25 | A kind of internal resistance type metal shearing resistance pressure-release anchor cable device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107489439A (en) * | 2017-09-26 | 2017-12-19 | 张立强 | A kind of anchor cable, which allows, presses locking device |
| CN108051306A (en) * | 2017-12-12 | 2018-05-18 | 安徽理工大学 | A kind of rock mass absciss layer dislocation is on the experimental rig of the disrumpent feelings influence of anchor cable |
| CN108442956A (en) * | 2018-05-14 | 2018-08-24 | 重庆大学 | A kind of adaptive compression shear formula anchor pole |
| CN108590721A (en) * | 2018-05-14 | 2018-09-28 | 重庆大学 | A kind of adaptively release can anchor pole |
| CN109057842A (en) * | 2018-09-20 | 2018-12-21 | 河南理工大学 | It cuts drawing conversion flexibility and allows pressure shear anchor arm and its construction supporting method |
| CN109162743A (en) * | 2018-09-26 | 2019-01-08 | 西南交通大学 | A kind of quasi- constant resistance and large deformation anchor cable of friction-shearing combined type |
| CN109505640A (en) * | 2018-11-19 | 2019-03-22 | 陕西煤业化工技术研究院有限责任公司 | A kind of screw-type metal pressure-relieving achor bar device |
| CN111425231A (en) * | 2020-03-31 | 2020-07-17 | 中国矿业大学 | Long and short anchor cable coordinated energy absorption yielding device and construction method |
| CN111594244A (en) * | 2020-06-11 | 2020-08-28 | 新汶矿业集团有限责任公司华丰煤矿 | III type resistance-increasing deformation anchor cable for deep yielding support and assembling and working method |
| CN111648804A (en) * | 2020-06-11 | 2020-09-11 | 新汶矿业集团有限责任公司华丰煤矿 | Resistance-increasing deformation anchor cable for deep yielding support and assembling and working method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109505640A (en) * | 2018-11-19 | 2019-03-22 | 陕西煤业化工技术研究院有限责任公司 | A kind of screw-type metal pressure-relieving achor bar device |
| CN111425231B (en) * | 2020-03-31 | 2021-03-26 | 中国矿业大学 | Long and short anchor cable coordinated energy absorption yielding device and construction method |
| CN111425231A (en) * | 2020-03-31 | 2020-07-17 | 中国矿业大学 | Long and short anchor cable coordinated energy absorption yielding device and construction method |
| CN111594244A (en) * | 2020-06-11 | 2020-08-28 | 新汶矿业集团有限责任公司华丰煤矿 | III type resistance-increasing deformation anchor cable for deep yielding support and assembling and working method |
| CN111648804A (en) * | 2020-06-11 | 2020-09-11 | 新汶矿业集团有限责任公司华丰煤矿 | Resistance-increasing deformation anchor cable for deep yielding support and assembling and working method |
| CN111648804B (en) * | 2020-06-11 | 2022-03-11 | 新汶矿业集团有限责任公司华丰煤矿 | Resistance-increasing deformation anchor cable for deep yielding support and assembling and working method |
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