CN110469353A - Mechanical prestressed anchor and its installation and recovery method can be recycled in one kind - Google Patents
Mechanical prestressed anchor and its installation and recovery method can be recycled in one kind Download PDFInfo
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- CN110469353A CN110469353A CN201910750478.9A CN201910750478A CN110469353A CN 110469353 A CN110469353 A CN 110469353A CN 201910750478 A CN201910750478 A CN 201910750478A CN 110469353 A CN110469353 A CN 110469353A
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- pushnut
- anchor
- strip
- base
- screw rod
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- 238000009434 installation Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000011084 recovery Methods 0.000 title abstract description 9
- 238000004873 anchoring Methods 0.000 claims abstract description 109
- 238000005553 drilling Methods 0.000 claims description 63
- 239000011435 rock Substances 0.000 claims description 34
- 238000004064 recycling Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 241001074085 Scophthalmus aquosus Species 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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
- 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
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
- E02D5/765—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor removable
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor 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
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0046—Production methods using prestressing techniques
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention provides one kind, and mechanical prestressed anchor can be recycled, including screw rod, the first anchoring piece, the second anchoring piece and casing, screw rod includes sequentially connected first, second and non-threaded section, first anchoring piece includes first base, the first pushnut and support unit, second anchoring piece includes second base, the second pushnut and support unit, each support unit includes upper supporting piece, lower support element and top, first base is equipped with clamping groove, second base is fixed on internal surface of sleeve pipe, and casing is equipped with strip-shaped hole；First and second pushnuts are mounted on the first thread segment, and the first thread segment passes through the installation through-hole of second base, and the clamping joint of screw rod is connected in clamping groove, and limitation screw rod can only be rotated around the axis of screw rod；Rotary screw can adjust the distance between top and the wall of a borehole of each support unit.The present invention also provides the installation of the anchor pole and recovery methods.The anchor force of the anchor pole is big, can solve the problems, such as that existing anchor pole is difficult to recycle.
Description
Technical field
The invention belongs to geotechnical engineering supporting fields, and being related to one kind can be recycled mechanical prestressed anchor and its installation and return
Receiving method.
Background technique
As China's underground engineering constantly develops to deep, the Surrounding Rock Control Theory and technology of deep engineering are to guarantee deep
The safe and efficient construction and production of underground engineering have very important meaning, carry out controlling most effective way to underground country rock
Diameter is exactly to apply anchor pole to drilling, therefore anchor pole is for guaranteeing that the safety of underground engineering construction has conclusive effect.
Anchor pole is used for outdoor side as a kind of support unit made of high tensile being mounted on inside country rock
The supporting of the engineerings such as slope, underground chamber, well lane engineering and building foundation pit.When carrying out suspension roof support, drill on country rock first,
Then anchor pole is installed in the borehole, under the action of anchor pole and country rock, cooperation pallet and nut control Surrounding Rock Movement.For example, right
For mechanical rock bolt, by the mechanism of anchor pole head and country rock, for grouted rock bolt and resin anchor, by anchor
Gu the cementation of binder and country rock, for friction rock bolt, by the rubbing action of anchor pole and country rock, to country rock into
Row is reinforced, and is played the role of support anchoring, is improved the bearing capacity of rock mass, be can effectively prevent generation falling rocks, landslide and rock burst etc. and is asked
Topic.
Due to the otherness of the geological conditions of engineering and the demand of engineering support, generallyd use not when carrying out suspension roof support
The anchor pole of same type, nowadays used anchor pole type mainly has both at home and abroad: the mechanicalnesses anchor pole such as slot-and-wedge type and swollen shell-type, this kind of
The power that anchor pole applies country rock can only driven bearing by active support power cannot be provided, and in the geological conditions of soft broken
Under supporting power it is small, anchoring effect is poor；The frictional properties anchor pole such as pipe-seam type anchor rod and hydraulic expansion type anchor stock, this kind of anchor pole pass through anchor
The expansion of club shaft and shoulder bed effects generate frictional force to play anchorage effect, and anchoring strength depends on the modeling of anchor rod body
Property deformation, anchor force changes with the change of anchor rod body, and anchoring status is unstable, possibly even curved due to anchor rod body
It is bent and make fastening invalidation；Grouted anchor bar, such anchor pole are mainstream anchor pole used in current support engineering, the anchoring of grouted anchor bar
Effect depends on the intensity of anchoring bond agent, and anchor pole can fail because of the destruction of anchoring bond agent, and grouted rock bolt is applied
Work complex process simplifies construction technology although resin anchor has carried out the improvement of construction technology, and resin explosive roll is at high cost,
Economic rationality is poor.The above anchor pole not can be recycled substantially, can not take out after being mounted in country rock, be only capable of disposable
It utilizes, not only causes the lot of materials wasting of resources, and remain in inside country rock may be to engineering later for discarded anchor pole
Progress causes difficulty.Therefore, under the overall background that geotechnical engineering instantly develops to deep, it is greatly and recyclable to develop anchor force
Anchor pole is very necessary.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of anchor forces greatly, it is mechanical pre- to can be recycled
Stress anchor pole and its installation and recovery method, to solve, anchoring effect existing for existing anchor pole is to be improved, is difficult to recycle
The problem of.
For achieving the above object, The technical solution adopted by the invention is as follows:
One kind can be recycled mechanical prestressed anchor, including screw rod, fixture nut, pallet, first anchoring piece, at least
One the second anchoring piece and casing,
The screw rod includes the first thread segment, the second thread segment and non-threaded section, on the first thread segment and the second thread segment
Hand of spiral on the contrary, non-threaded section, the first thread segment and the second thread segment are sequentially connected, non-threaded section of end is equipped with clamping
Head；
First anchoring piece includes first base, the first pushnut and at least three support units, and each support is single
Member includes one group of upper supporting piece, one group of lower support element and a top, one end of upper supporting piece and top is hinged, the other end and the
One pedestal is hinged, and one end of lower support element and top be hinged, the other end and the first pushnut are hinged, and each support unit uniformly divides
Cloth is in first base and the first pushnut；First base is equipped with and the matched clamping groove of clamping joint；
Second anchoring piece includes second base, the second pushnut and at least three support units, and each support is single
Member includes one group of upper supporting piece, one group of lower support element and a top, one end of upper supporting piece and top is hinged, the other end and the
Two pedestals are hinged, and one end of lower support element and top be hinged, the other end and the second pushnut are hinged, and each support unit uniformly divides
Cloth is in second base and the second pushnut；Second base is fixed on internal surface of sleeve pipe, and second base is equipped with and wears for screw rod
The installation through-hole crossed；
Described sleeve pipe is equipped with position each support unit matched first with the first anchoring piece and the second anchoring piece respectively
Strip-shaped hole and the second strip-shaped hole, second base are fixed on the second strip-shaped hole close to the internal surface of sleeve pipe of one end end of the first strip-shaped hole
On；
First pushnut and the second pushnut are mounted on the first thread segment of screw rod, and the first thread segment of screw rod is worn
The installation through-hole of second base is crossed, the clamping joint of screw rod is connected in the clamping groove of first base, and clamping groove limits screw rod can only
Axis around screw rod rotates；Rotary screw can drive the first pushnut and the second pushnut to move on the first thread segment,
So as to adjust the distance between the top of each support unit and the wall of a borehole；Pallet is mounted on the second spiral shell of screw rod by fixture nut
In line section.
In the above-mentioned technical solution that mechanical prestressed anchor can be recycled, come directly towards the face that is contacted with the wall of a borehole for plane or
With the matched cambered surface of the wall of a borehole radian, since cambered surface and the contact area of the wall of a borehole are bigger relative to plane, top and brill
The face of hole wall contact is preferably shaped to and the matched cambered surface of the wall of a borehole radian；Exist in the first pushnut and the second pushnut
During mobile drive drives top movement on first thread segment, each support unit of the first anchoring piece and the second anchoring piece
It is parallel with the axis of drilling rod always to come directly towards the face contacted with the wall of a borehole；The shape in face contacted with the wall of a borehole for top for and brill
For the case where hole wall radian matched cambered surface, the mobile band on the first thread segment when the first pushnut and the second pushnut
During dynamic top movement, the face that the top of each support unit is contacted with the wall of a borehole is parallel with the wall of a borehole always.In order to increase
Top frictional force between the two when contacting with the wall of a borehole comes directly towards the face contacted with the wall of a borehole and is preferably arranged to rough surface.
In the above-mentioned technical solution that mechanical prestressed anchor can be recycled, boring aperture is fitted in order to increase same anchor pole
It further include anchor plate in the first anchoring piece and the second anchoring piece in further technical solution, anchor plate is arranged each with range
At first strip-shaped hole and each second strip-shaped hole, one end of each anchor plate is hinged on the outer wall of casing, anchor plate and sleeve outer wall
Articulated position be located at the first strip-shaped hole and the second strip-shaped hole on the sleeve outer wall of drilling bottom one end end；It is set on anchor plate
There is third strip-shaped hole, top, which is equipped with, is equipped with threaded hole with the matched sliding block of third strip-shaped hole, sliding block, and sliding block passes through Article 3
Shape hole is fixed on anchor plate by the threaded fixed column being fixed in threaded hole；Rotary screw can drive each support unit
The sliding block of top moved in the third strip-shaped hole of anchor plate, and then drive the non-articulated end of anchor plate to the wall of a borehole or screw rod
Movement.Further, the edge of the non-articulated end of anchor plate is arc-shaped, when top move drive anchor plate non-articulated end with
When the wall of a borehole contacts, the edge of the non-articulated end of anchor plate is bonded with the wall of a borehole.The width of sliding block on top is no more than third
The width of strip-shaped hole, 1/3 of the third bar shaped hole length on of length no more than anchor plate of the sliding block on top, third strip-shaped hole
Length be 0.65~0.85 times of anchor plate length, the length for being mounted on the anchor plate at the first strip-shaped hole is the first strip-shaped hole
0.8~1.2 times, the length for being mounted on the anchor plate at the second strip-shaped hole is 0.8~1.2 times of the second strip-shaped hole, anchor plate
Material be preferably steel plate, be greater than the width of third strip-shaped hole with the length of the fixed column of anchor plate for fixed top, it is above
These structures can guarantee that the sliding block of top is free to slide in the third strip-shaped hole of anchor plate and drive anchor plate to the wall of a borehole or
Person's screw motion.
Upper branch in the above-mentioned technical solution that mechanical prestressed anchor can be recycled, on the first anchoring piece and the second anchoring piece
Support member and the length of lower support element should meet when the first pushnut and the second pushnut are moved to top on the first thread segment
When head or anchor plate and the wall of a borehole contact, the angle between upper supporting piece and lower support element is obtuse angle.For top and the wall of a borehole
The scheme directly contacted, when top is contacted with the wall of a borehole, the angle between upper supporting piece and lower support element is that obtuse angle can be true
It protects upper supporting piece and lower support element plays preferable supporting role to top, be conducive to improve the anchoring effect of anchor pole in the borehole
Fruit, the angle between upper supporting piece and lower support element are preferably 100 °~140 °, and further preferably 110 °~130 °, more into one
Preferably 115 °~125 ° of step；For the scheme that top drives anchor plate to contact with the wall of a borehole, when the movable end and brill of anchor plate
When hole wall contacts, the angle between upper supporting piece and lower support element is that obtuse angle may insure that preferable branch is played to anchor plate in top
Support effect is conducive to improve the anchoring effect of anchor pole in the borehole, and the angle between upper supporting piece and lower support element is preferably
100 °~140 °, further preferably 110 °~130 °, be still more preferably 115 °~125 °.
In the above-mentioned technical solution that mechanical prestressed anchor can be recycled, the quantity of the second anchoring piece and setting position according to
Actual wall rock condition is determined, and the quantity of the second anchoring piece is more, and anchoring effect is better, it is preferable that the second anchoring piece
Quantity at least two；The quantity of first anchoring piece and the support unit in the second anchoring piece also according to actual wall rock condition into
Row determines that the more anchoring effects of support unit are better, but usually the quantity of support unit is no more than eight in anchoring piece.
In the above-mentioned technical solution that mechanical prestressed anchor can be recycled, clamping joint is by clamping joint body and clamping neck group
At clamping joint body and clamping neck are cylindrical, and clamping joint body and the axis for being clamped neck are overlapped with the axis of screw rod, are clamped
The diameter of neck is less than the diameter of clamping joint body.
In the above-mentioned technical solution that mechanical prestressed anchor can be recycled, first base is made of left and right two parts, left and right
Two parts are fixed as one by bolt pair, and fluted, the left and right two after bolt pair is fixed as one is all provided on the two parts of left and right
On part groove composition first base clamping groove, clamping groove include with the matched clamping joint body receiving portion of clamping joint body and with
It is clamped the matched clamping neck receiving portion of neck.
In the above-mentioned technical solution that mechanical prestressed anchor can be recycled, the length of the first strip-shaped hole is at least the first anchoring
0.8 times of the sum of the length of the upper supporting piece of the support unit of part and lower support element, preferably 0.8~1.5 times, the second strip-shaped hole
Length be at least the second anchoring piece support unit upper supporting piece and 0.8 times of the sum of length of lower support element, preferably
0.8~1.5 times.The width of first strip-shaped hole can pass through for the top of the first anchoring piece, upper supporting piece and lower support element, the
The width of two strip-shaped holes can pass through for the top of the second anchoring piece, upper supporting piece and lower support element.
In the above-mentioned technical solution that mechanical prestressed anchor can be recycled, first base, the first pushnut, second base
And second be equipped with convex block for hinged upper supporting piece and lower support element on pushnut, upper supporting piece and lower support element are hinged
On convex block.
Upper branch in the above-mentioned technical solution that mechanical prestressed anchor can be recycled, on the first anchoring piece and the second anchoring piece
Support member and lower support element are support bar, and each group of upper supporting piece includes two support bars, and each group of lower support element includes two branch
Stay, the equal length of each support bar.Each support bar in same group of upper supporting piece is parallel to each other, in same group of lower support element
Each support bar is parallel to each other.The support bar can be steel bar, and the length of support bar is mainly according to prestressed grouting to be installed
The diameter of the drilling of anchor pole is determined, and the length for being normally supported item can be 20~40cm.
In the above-mentioned technical solution that mechanical prestressed anchor can be recycled, why two hand of spiral are designed on screw rod
Opposite the first thread segment and the second thread segment is in order to avoid anchor pole to be fixed on by the first anchoring piece and the second anchoring piece
After in drilling, when the second thread segment of hell installs pallet by fixture nut because of screw rod turn caused by turning fixture nut
It is dynamic, and then cause the top of the first anchoring piece and the second anchoring piece mobile to screw rod, cause the movable end of top or anchor plate
The problem of being disengaged with the wall of a borehole appearance, to ensure stable anchorage of the anchoring piece in drilling.
It is to be installed that mechanical prestressed anchor can be recycled in the above-mentioned technical solution that mechanical prestressed anchor can be recycled
The internal diameter of drilling is 1.2~3 times of sleeve outer, and the end that casing is located at hell one end flushes either casing with hell
It is located in drilling positioned at one end end of hell, the end that casing is located at the one end at drilling bottom flushes either with first base
First base is located at outside sleeve, the length of of length no more than drilling of casing, in general, the length of casing is the 0.7 of drillable length
~1 times；The length of screw rod is greater than the length of drilling, and the length of screw rod can be determined according to actual demands of engineering, the length of screw rod
Degree is usually 2~3m.The diameter of pallet is greater than the diameter of drilling, and pallet is equipped with the through-hole passed through for the second thread segment.
The present invention also provides the above-mentioned installation that mechanical prestressed anchor can be recycled and recovery methods, and steps are as follows:
1. drilling through drilling in country rock；
Keep each support single 2. adjusting the angle between the first anchoring piece and the upper supporting piece and lower support element of the second anchoring piece
The top of member is from stretching in the first strip-shaped hole and the second strip-shaped hole and after mechanical prestressed anchor can be recycled and be put into drilling
Top or anchor plate do not contact the wall of a borehole, and mechanical prestressed anchor, which then will can be recycled, and be put into drilling resists first base
Drill bottom, and rotation screw rod drives the first pushnut and the second pushnut to move to drilling bottom direction and drives top to drilling
Wall movement persistently rotates screw rod to prestressing force until the movable end of top or anchor plate is contacted with the wall of a borehole generates prestressing force
Application finishes, and pallet is fixed on hell by the fixture nut on the second thread segment, that is, completes can be recycled and mechanically answer in advance
The installation of power anchor pole；
3. unscrewing the fixture nut on the second thread segment after the completion of supporting task, then rotates screw rod and drive first
Pushnut and the second pushnut move to hell direction and drive top to screw motion, until top or anchor plate with
The wall of a borehole disengages, and mechanical prestressed anchor will can be recycled and take out from drilling, that is, completes that mechanical prestressing force can be recycled
The recycling of anchor pole.
Compared with prior art, present invention produces technical effects beneficial below:
1. can be recycled mechanical prestressed anchor the present invention provides one kind, the Soil Anchor Design is multiple for applying to country rock
The anchoring piece of Prestressing, including first anchoring piece and at least one second anchoring piece, the first anchoring piece and the second anchoring
Part applies prestressing force, the first anchoring piece to country rock by the cooperation of pedestal, pushnut, multiple support units, casing and screw rod
Be positioned close to the position of screw rod end, multiple second anchoring pieces are distributed on the body of rod of anchor pole, rockbolt installation in the borehole it
Afterwards, the first anchoring piece is anchored at drilling bottom, and each second anchoring piece is anchored in hell between drilling bottom, due to each
Anchoring piece can multiple sites in the borehole prestressing force is applied to country rock, therefore be only able to achieve end anchorage relative to existing
For anchor pole, the anchor force of anchor pole provided by the invention is bigger, and anchoring effect is more preferable, and existing machinery formula anchor pole can be overcome to exist
The hypodynamic defect of anchoring.
2. machinery can be recycled on the basis of the base case provided by the invention that mechanical prestressed anchor can be recycled
Formula prestressed anchor further includes multiple anchor plates, on the casing at first and second hinged strip-shaped hole of one end of each anchor plate, top
The third strip-shaped hole devised on sliding block and anchor plate on head cooperates, and drives the top of each support unit to move in rotary screw
When, top movement in the third strip-shaped hole of anchor plate can drive the non-articulated end of anchor plate to the wall of a borehole or screw motion, according to
It is contacted by each support unit supports anchor plate with the wall of a borehole and prestressing force is applied to drilling country rock, can increase same anchor pole in this way to not
With the scope of application of the drilling in aperture, the applicability in engineering is stronger.
3. provided by the invention can be recycled mechanical prestressed anchor, due to the top of the first anchoring piece and the second anchoring piece
The distance between the wall of a borehole be it is adjustable, by turning screw rod, can make top contacted with the wall of a borehole or make to come directly towards
It drives the anchor plate being attached thereto to contact with the wall of a borehole and prestressing force is applied to the wall of a borehole, realize the supporting to drilling country rock, In
After the completion of supporting task, rotating screw rod again by opposite direction can be such that top disengages with the wall of a borehole or drive top
Anchor plate disengages anchor plate with the wall of a borehole to screw motion, freely takes out, thus anchor pole provided by the invention be can be with
It recycles, for the existing anchor pole for being only capable of once utilizing, anchor pole provided by the invention has recycling, reduces
The characteristics of support cost, and can remain in inside country rock to avoid discarded anchor pole and difficulty is caused to engineering progress later.
4. provided by the invention can be recycled mechanical prestressed anchor, has the characteristics that installation, recycles convenient, installation side
Method is simple, rockbolt installation is carried out after the completion of drilling drilling, in the top for adjusting each anchoring piece in the first strip-shaped hole and second
Behind position in strip-shaped hole, anchor pole is put into drilling, rotation screw rod can make the first pushnut and second be dragged into nut in spiral shell
Bar rising borehole bottom kinematic mount plays top and contacts with the wall of a borehole, or drives anchor plate to open and bore by supporting top
Hole wall contact tightens fixture nut later and completes to install by pallet is fixed, due to the first pushnut, the second pushnut and
Hand of spiral on first thread segment and the second thread segment locating for fixture nut is on the contrary, therefore in the process for tightening fixture nut
In the first, second pushnut for not will cause on the first thread segment moved to hell direction, i.e., not will cause top or
Person's anchor plate is disengaged with the wall of a borehole, this has just ensured stable anchorage of the anchoring piece in drilling.Pallet is being removed when recycling
After rotate backward screw rod make top or anchor plate disengage and anchor pole can be taken out with the wall of a borehole, recovery method is simple.
Detailed description of the invention
Fig. 1 is provided by the invention one of schematic diagram after mechanical prestressed anchor anchors in the borehole to can be recycled；
Fig. 2 is provided by the invention to can be recycled two of the schematic diagram after mechanical prestressed anchor anchors in the borehole；
Fig. 3 is the structural schematic diagram of the clamping joint of screw rod；
Fig. 4 is the structural schematic diagram of the left/right part of first base；
Fig. 5 is that the top of screw rod is connected to the structural schematic diagram in the clamping groove of first base；
Fig. 6 is the schematic diagram that the anchoring unit of the first anchoring piece is mounted on the first thread segment；
Fig. 7 is the perspective view that mechanical prestressed anchor rod bush can be recycled in embodiment 1；
Fig. 8 is the schematic diagram for installing anchor plate in embodiment 2 on casing；
Fig. 9 is the structural schematic diagram in embodiment 2 on top；
In figure, 1-screw rod, the first thread segment of 1-1-, the second thread segment of 1-2-, non-threaded section of 1-3-, 2-fixed spiral shells
Mother, 3-pallets, the 4-the first anchoring piece, 4-1-first base, the first pushnut of 4-2-, the 5-the second anchoring piece, 5-1-
Second base, the second pushnut of 5-2-, 6-casings, the first strip-shaped hole of 6-1-, the second strip-shaped hole of 6-2-, 7-clamping joints,
7-1-clamping joint body, 7-2-clamping neck, 8-upper supporting pieces, 9-lower support elements, 10-tops, 10-1-sliding block, 10-
2-fixed columns, 11-clamping grooves, 12-installation through-holes, 13-anchor plates, 13-1-third strip-shaped hole, 14-bolt pairs, 15-
Convex block, 16-drillings.
Specific embodiment
Mechanical prestressed anchor and its installation can be recycled by the following examples and in conjunction with attached drawing to provided by the invention
It is described further with recovery method.It is necessary to note that following embodiment is served only for, the invention will be further described, Bu Nengli
Solution is limiting the scope of the invention, and one of ordinary skill in the art make the present invention according to foregoing invention content
Nonessential modifications and adaptations are embodied, and the range of invention protection is still fallen within.
Embodiment 1
In the present embodiment, the structural schematic diagram of mechanical prestressed anchor can be recycled as shown in Figure 1, including screw rod 1, fixed
Nut 2, pallet 3, first anchoring piece 4, two the second anchoring pieces 5, casings 6.
The screw rod 1 include the first thread segment 1-1, the second thread segment 1-2 and non-threaded section of 1-3, the first thread segment 1-1 with
For hand of spiral on second thread segment 1-2 on the contrary, specifically, the first thread segment is left-handed thread section, the second thread segment is dextrorotation
Thread segment, non-threaded section of 1-3, the first thread segment 1-1 and the second thread segment 1-2 are sequentially connected, and the end of non-threaded section of 1-3 is equipped with
Clamping joint 7, as shown in figure 3, clamping joint 7 is made of clamping joint body 7-1 and clamping neck 7-2, clamping joint body and clamping neck are equal
Cylindrical, clamping joint body and the axis for being clamped neck are overlapped with the axis of screw rod, and the diameter for being clamped neck is less than clamping joint body
Diameter.
First anchoring piece 4 includes first base 4-1, the first pushnut 4-2 and four support units, each support
Unit includes one group of upper supporting piece, 8, one groups of lower support elements 9 and a top 10.One end of upper supporting piece 8 and top 10 it is hinged,
The other end and first base 4-1 are hinged, one end of lower support element 9 and top 10 is hinged, the other ends and the first pushnut 4-2 hinge
It connects, four support units are evenly distributed on first base 4-1 and the first pushnut 4-2；The upper supporting piece 8 of each support unit
It should meet with the length of lower support element 9 when the first pushnut 4-2 is moved to top 10 and the wall of a borehole on the first thread segment 1-1
When contact, the angle between upper supporting piece 8 and lower support element 9 is 110 °~130 °.Specifically, first base 4-1 and first is pushed away
The convex block 15 of hinged upper supporting piece 8 and lower support element 9 is used for there are four being all provided on into nut 4-2；Upper supporting piece 8 and lower support element
9 be support bar, and the material of support bar is steel bar, and each group of upper supporting piece includes two support bars, and each group of lower support element includes
Two support bars, the equal length of each support bar；Top is cuboid bloom, is respectively provided with two on the left and right side of cuboid bloom
A hinge joint, four hinge joints are in the same plane, and the front and back side of the plane of four hinge joints composition and cuboid bloom
Face is parallel, close to upper side two hinge joints line, close to downside two hinge joints line with upper and lower side
In parallel, the company of two hinge joints close to downside is equal to close to the distance for being wired to upper side of two hinge joints of upper side
Distance of the line to downside；In each support unit, one end of two support bars as upper supporting piece is respectively hinged at the first bottom
On the convex block of seat, the other end is respectively hinged on two hinge joints of the upper close top upper side in top, as lower support element
One end of two support bars is respectively hinged on the convex block of the first pushnut, and it is upper close to top that the other end is respectively hinged at top
On two hinge joints of downside, it can guarantee to come directly towards when pushnut drives top mobile close to the flat of the wall of a borehole in this way
Face is parallel to the axis of hollow drill pipe without tilting always.First base 4-1 is equipped with and the matched clamping groove of clamping joint 7
11, first base 4-1 is made of left and right two parts, and left and right two parts are fixed as one by bolt pair 14, on the two parts of left and right
Be all provided with it is fluted, as shown in figure 4, after bolt pair 14 is connected as one on the two parts of left and right groove composition pedestal clamping groove
11, clamping groove include with the matched clamping joint body receiving portion of clamping joint body and with clamping the matched clamping neck receiving portion of neck.
Second anchoring piece 5 includes second base 5-1, the second pushnut 5-2 and four support units, each support
Unit includes one group of upper supporting piece, 8, one groups of lower support elements 9 and a top 10.One end of upper supporting piece 8 and top 10 it is hinged,
The other end and second base 5-1 are hinged, one end of lower support element 9 and top 10 is hinged, the other ends and the second pushnut 5-2 hinge
It connects, four support units are evenly distributed on second base 5-1 and the second pushnut 5-2；The upper supporting piece 8 of each support unit
It should meet with the length of lower support element 9 when the second pushnut 5-2 is moved to top 10 and the wall of a borehole on the first thread segment 1-1
When contact, the angle between upper supporting piece 8 and lower support element 9 is 110 °~130 °.Specifically, second base 5-1 is cylindrical,
Second base is equipped with the installation through-hole 12 passed through for screw rod 1, and second base is fixed in casing 6 in the mode coaxial with casing
On wall；It is all provided with that there are four for the convex of hinged upper supporting piece 8 and lower support element 9 on second base 5-1 and the second pushnut 5-2
Block 15；Upper supporting piece 8 and lower support element 9 are support bar, and the material of support bar is steel bar, and each group of upper supporting piece includes two branch
Stay, each group of lower support element include two support bars, the equal length of each support bar；In the structure of top and the first anchoring piece
Top structure it is identical；In each support unit, one end of two support bars as upper supporting piece is respectively hinged at the second bottom
On the convex block of seat, the other end is respectively hinged on two hinge joints of the upper close top upper side in top, as lower support element
One end of two support bars is respectively hinged on the convex block of the second pushnut, and it is upper close to top that the other end is respectively hinged at top
On two hinge joints of downside, it can guarantee to come directly towards when the second pushnut drives top mobile close to the wall of a borehole in this way
Face be parallel to the axis of drilling rod always without tilting.
Described sleeve pipe 6 is equipped with matched four the first strip-shaped hole 6- of four support units of position and the first anchoring piece 4
1 and position and each second anchoring piece 4 the matched second strip-shaped hole 6-2 of each support unit, i.e. eight the second bar shapeds altogether
Hole；Second base 5-1 is fixed on the second strip-shaped hole on the internal surface of sleeve pipe of one end end of the first strip-shaped hole；First strip-shaped hole
The length of 6-1 be the first anchoring piece 4 support unit upper supporting piece 8 and lower support element 9 the sum of length, the second strip-shaped hole
Length is the upper supporting piece 8 of the support unit of the second anchoring piece 5 and the sum of the length of lower support element 9.Recyclable machinery to be installed
The internal diameter of the drilling of formula prestressed anchor is 1.5 times of sleeve outer, and the length of casing and the equal length of drilling, casing are located at
The one end at drilling bottom is flushed with the bottom surface of first base, and one end that casing is located at hell is flushed with hell, the length of screw rod
Greater than the length of drilling, the diameter of pallet is greater than the diameter of drilling, and pallet is equipped with the through-hole passed through for the second thread segment.
First pushnut 4-2 and the second pushnut 5-2 are mounted on the first thread segment 1-1 of screw rod 1, and the of screw rod
One thread segment passes through the installation through-hole 12 of second base, and the clamping joint 7 of screw rod is connected in the clamping groove 11 of first base, such as schemes
Shown in 5, clamping groove 11, which limits screw rod, to be rotated around the axis of screw rod, and the anchoring unit of the first anchoring piece is mounted on the first screw thread
Schematic diagram in section is shown in that Fig. 6, the perspective view that mechanical prestressed anchor can be recycled described in the present embodiment are as shown in Figure 7；Rotate spiral shell
Bar 1 can drive the first pushnut 4-2 and the second pushnut 5-2 to move on the first thread segment 1-1, so as to adjust each support
The distance between the top 10 of unit and the wall of a borehole；Pallet 3 is mounted on the second thread segment 1-2 of screw rod by fixture nut 2.
Embodiment 2
In the present embodiment, the structural schematic diagram of mechanical prestressed anchor can be recycled as shown in Fig. 2, including screw rod 1, fixed
Nut 2, pallet 3,4, second anchoring pieces 5 of first anchoring piece, casing 6 and anchor plate 13.
The screw rod 1 include the first thread segment 1-1, the second thread segment 1-2 and non-threaded section of 1-3, the first thread segment 1-1 with
For hand of spiral on second thread segment 1-2 on the contrary, specifically, the first thread segment is left-handed thread section, the second thread segment is dextrorotation
Thread segment, non-threaded section of 1-3, the first thread segment 1-1 and the second thread segment 1-2 are sequentially connected, and the end of non-threaded section of 1-3 is equipped with
Clamping joint 7, as shown in figure 3, clamping joint 7 is made of clamping joint body 7-1 and clamping neck 7-2, clamping joint body and clamping neck are equal
Cylindrical, clamping joint body and the axis for being clamped neck are overlapped with the axis of screw rod, and the diameter for being clamped neck is less than clamping joint body
Diameter.
The anchor plate 13 is steel plate, and anchor plate is arranged at each first strip-shaped hole and each second strip-shaped hole, each anchor plate
One end be hinged on the outer wall of casing, the articulated position of anchor plate and sleeve outer wall is located at the first strip-shaped hole and the second strip-shaped hole
On the sleeve outer wall of drilling bottom one end end, third strip-shaped hole is equipped with along the length direction of anchor plate on anchor plate
The edge of 13-1, the non-articulated end of anchor plate 13 are arc-shaped, as shown in Figure 8.
First anchoring piece 4 includes first base 4-1, the first pushnut 4-2 and four support units, each support
Unit includes one group of upper supporting piece, 8, one groups of lower support elements 9 and a top 10.One end of upper supporting piece 8 and top 10 it is hinged,
The other end and first base 4-1 are hinged, one end of lower support element 9 and top 10 is hinged, the other ends and the first pushnut 4-2 hinge
It connects, four support units are evenly distributed on first base 4-1 and the first pushnut 4-2；The upper supporting piece 8 of each support unit
It should meet with the length of lower support element 9 and work as the first pushnut 4-2 mobile 10 promotion anchors of drive top on the first thread segment 1-1
When the movable end and the wall of a borehole of solid plate contact, the angle between upper supporting piece 8 and lower support element 9 is 110 °~130 °.Specifically,
The convex block 15 of hinged upper supporting piece 8 and lower support element 9 is used for there are four being all provided on first base 4-1 and the first pushnut 4-2；
Upper supporting piece 8 and lower support element 9 are support bar, and the material of support bar is steel bar, and each group of upper supporting piece includes two support bars,
Each group of lower support element includes two support bars, the equal length of each support bar；Top is cuboid bloom, cuboid bloom
Two hinge joints are respectively provided on left and right side, four hinge joints are in the same plane, and four hinge joints composition plane with
The front and back sides of cuboid bloom are parallel, the line close to two hinge joints of upper side, two hinge joints close to downside
Line it is parallel with upper and lower side；In each support unit, one end of two support bars as upper supporting piece is respectively hinged at
On the convex block of first base, the other end is respectively hinged on two hinge joints of the upper close top upper side in top, as lower branch
One end of two support bars of support member is respectively hinged on the convex block of the first pushnut, and the other end is respectively hinged on top and leans on
On two hinge joints of nearly top downside.As shown in figure 9, top 10 be equipped with the matched sliding block 10-1 of third strip-shaped hole,
The width of sliding block is less than the width of third strip-shaped hole, and the length of sliding block is less than the length of third strip-shaped hole, and sliding block is equipped with screw thread
Hole, sliding block pass through third strip-shaped hole 13-1 and are fixed on anchor plate by the threaded fixed column 10-2 being fixed in threaded hole
On, the length of fixed column is greater than the width of third strip-shaped hole.First base 4-1 be equipped with the matched clamping groove 11 of clamping joint,
First base 4-1 is made of left and right two parts, and left and right two parts are fixed as one by bolt pair, is equipped on the two parts of left and right
Groove, after bolt pair 14 is connected as one on the two parts of left and right groove composition pedestal clamping groove 11, clamping groove include with
The matched clamping joint body receiving portion of clamping joint body and with clamping the matched clamping neck receiving portion of neck.
Second anchoring piece 5 includes second base 5-1, the second pushnut 5-2 and four support units, each support
Unit includes one group of upper supporting piece, 8, one groups of lower support elements 9 and a top 10.One end of upper supporting piece 8 and top 10 it is hinged,
The other end and second base 5-1 are hinged, one end of lower support element 9 and top 10 is hinged, the other ends and the second pushnut 5-2 hinge
It connects, four support units are evenly distributed on second base 5-1 and the second pushnut 5-2；The upper supporting piece 8 of each support unit
It should meet with the length of lower support element 9 and work as the second pushnut 5-2 mobile 10 promotion anchors of drive top on the first thread segment 1-1
When the movable end and the wall of a borehole of solid plate contact, the angle between upper supporting piece 8 and lower support element 9 is 110 °~130 °.Specifically,
Second base 5-1 is cylindrical, and second base is equipped with the installation through-hole 12 passed through for screw rod 1, and second base is with same with casing
The mode of axis is fixed on 6 inner wall of casing；It is all provided on second base 5-1 and the second pushnut 5-2 hinged there are four being used for
The convex block 15 of supporting element 8 and lower support element 9；Upper supporting piece 8 and lower support element 9 are support bar, and the material of support bar is steel bar, often
One group of upper supporting piece includes two support bars, and each group of lower support element includes two support bars, the equal length of each support bar；Top
The structure of head is identical as the structure of top in the first anchoring piece；Two support bars in each support unit, as upper supporting piece
One end be respectively hinged on the convex block of second base, the other end is respectively hinged at upper two hinges close to top upper side in top
On contact, one end of two support bars as lower support element is respectively hinged on the convex block of the second pushnut, the other end point
It is upper on two hinge joints of top downside that it is not hinged on top.Top 10 is equipped with and the matched sliding block of third strip-shaped hole
10-1, the width of sliding block are less than the width of third strip-shaped hole, and the length of sliding block is less than the length of third strip-shaped hole, and sliding block is equipped with
Threaded hole, sliding block pass through third strip-shaped hole 13-1 and are fixed on anchoring by the threaded fixed column 10-2 being fixed in threaded hole
On plate, the length of fixed column is greater than the width of third strip-shaped hole.
Described sleeve pipe 6 is equipped with matched four the first strip-shaped hole 6- of four support units of position and the first anchoring piece 4
1 and position and the second anchoring piece 4 matched four the second strip-shaped hole 6-2 of each support unit；Second base 5-1 is fixed on
Second strip-shaped hole is on the internal surface of sleeve pipe of one end end of the first strip-shaped hole；The length of first strip-shaped hole 6-1 is the first anchoring
The upper supporting piece 8 of the support unit of part 4 and the sum of the length of lower support element 9, the length of the second strip-shaped hole are the second anchoring piece 5
The upper supporting piece 8 of support unit and the sum of the length of lower support element 9.Anchor plate has eight pieces altogether, each anchor plate and sleeve outer wall
Articulated position is located at the first strip-shaped hole and the second strip-shaped hole on the sleeve outer wall of drilling bottom one end end；It is to be installed recyclable
The internal diameter of the drilling of mechanical prestressed anchor is 3 times of sleeve outer, the length of casing and the equal length of drilling, casing position
It is flushed in the one end at drilling bottom with the bottom surface of first base, one end that casing is located at hell is flushed with hell, the length of screw rod
Degree is greater than the length of drilling, and the diameter of pallet is greater than the diameter of drilling, and pallet is equipped with the through-hole passed through for the second thread segment.
First pushnut 4-2 and the second pushnut 5-2 are mounted on the first thread segment 1-1 of screw rod 1, and the of screw rod
One thread segment passes through the installation through-hole 12 of second base, and the clamping joint 7 of screw rod is connected in the clamping groove 11 of first base, is clamped
Slot 11, which limits screw rod, to be rotated around the axis of screw rod；Rotary screw 1 can drive the first pushnut 4-2 and the second pushnut
5-2 is moved on the first thread segment 1-1, to drive top to the wall of a borehole or screw motion, while driving the sliding block of top
It is moved in the third strip-shaped hole of anchor plate, and then drives the non-articulated end of anchor plate to the wall of a borehole or screw motion, work as top
When movement drives the non-articulated end of anchor plate and the wall of a borehole to contact, the edge of the non-articulated end of anchor plate 13 is bonded with the wall of a borehole.
Embodiment 3
In the present embodiment, the installation described in embodiment 1 that mechanical prestressed anchor can be recycled and recovery method are provided, is walked
It is rapid as follows:
1. drilling through drilling 16 in country rock, mechanical prestressed anchor suitably can be recycled according to the size selection size of drilling
Bar.
Keep each support single 2. adjusting the angle between the first anchoring piece and the upper supporting piece and lower support element of the second anchoring piece
The top of member is stretched out from the first strip-shaped hole and the second strip-shaped hole just, and mechanical prestressed anchor then will can be recycled and be put into brill
So that first base is resisted drilling bottom in hole, rotates clockwise screw rod and drive the first pushnut and the second pushnut to drilling bottom
Direction moves and top is driven to move to the wall of a borehole, until top is contacted with the wall of a borehole generates prestressing force, persistently rotates clockwise
Screw rod to prestress application finishes, and pallet is covered on the second thread segment of screw rod, tightens clockwise on the second thread segment solid
Determine nut to fix anchor pole in the borehole until pallet is contacted with the country rock at hell, that is, completes that mechanical prestressing force can be recycled
The installation of anchor pole.
3. the fixture nut rotated on the second thread segment counterclockwise is unscrewed, then the inverse time after the completion of supporting task
Needle rotation screw rod drives the first pushnut and the second pushnut to move to hell direction and drives and comes directly towards to screw motion,
Until top is disengaged with the wall of a borehole, mechanical prestressed anchor will can be recycled and taken out from drilling, that is, completes recyclable machine
The recycling of tool formula prestressed anchor.The anchor pole of recycling can continue to use in next supporting task.
Embodiment 4
In the present embodiment, the installation as described in example 2 that mechanical prestressed anchor can be recycled and recovery method are provided, is walked
It is rapid as follows:
1. drilling through drilling 16 in country rock, mechanical prestressed anchor suitably can be recycled according to the size selection size of drilling
Bar.
Keep each support single 2. adjusting the angle between the first anchoring piece and the upper supporting piece and lower support element of the second anchoring piece
The top of member is stretched out from the first strip-shaped hole and the second strip-shaped hole just, and mechanical prestressed anchor then will can be recycled and be put into brill
So that first base is resisted drilling bottom in hole, rotates clockwise screw rod and drive the first pushnut and the second pushnut to drilling bottom
Direction moves and top is driven to move to the wall of a borehole, until the movable end of anchor plate is contacted with the wall of a borehole generates prestressing force, continues
It rotates clockwise screw rod to prestress application to finish, pallet is covered on the second thread segment of screw rod, it is suitable on the second thread segment
Hour hands tighten fixture nut and fix anchor pole in the borehole until pallet is contacted with the country rock at hell, that is, complete recyclable machine
The installation of tool formula prestressed anchor.
3. the fixture nut rotated on the second thread segment counterclockwise is unscrewed, then the inverse time after the completion of supporting task
Needle rotation screw rod drives the first pushnut and the second pushnut to move to hell direction and drives and comes directly towards to screw motion,
Until the movable end of anchor plate is disengaged with the wall of a borehole, mechanical prestressed anchor will can be recycled and taken out from drilling, i.e., it is complete
At the recycling that mechanical prestressed anchor can be recycled.The anchor pole of recycling can continue to use in next supporting task.
Claims (10)
1. mechanical prestressed anchor, including screw rod (1), fixture nut (2), pallet (3) can be recycled in one kind, which is characterized in that
It further include first anchoring piece (4), at least one second anchoring piece (5) and casing (6),
The screw rod (1) includes the first thread segment (1-1), the second thread segment (1-2) and non-threaded section (1-3), the first thread segment
Hand of spiral on (1-1) and the second thread segment (1-2) is on the contrary, non-threaded section (1-3), the first thread segment (1-1) and the second spiral shell
Line section (1-2) is sequentially connected, and the end of non-threaded section (1-3) is equipped with clamping joint (7)；
First anchoring piece (4) includes first base (4-1), the first pushnut (4-2) and at least three support units,
Each support unit includes one group of upper supporting piece (8), one group of lower support element (9) and a top (10), one end of upper supporting piece (8)
With top (10) hinged, the other end and first base (4-1) hingedly, one end and top (10) of lower support element (9) are hinged, another
Hingedly with the first pushnut (4-2), each support unit is evenly distributed on first base (4-1) and the first pushnut (4- at end
2) on；First base (4-1) is equipped with and the matched clamping groove of clamping joint (11)；
Second anchoring piece (5) includes second base (5-1), the second pushnut (5-2) and at least three support units,
Each support unit includes one group of upper supporting piece (8), one group of lower support element (9) and a top (10), one end of upper supporting piece (8)
With top (10) hinged, the other end and second base (5-1) hingedly, one end and top (10) of lower support element (9) are hinged, another
Hingedly with the second pushnut (5-2), each support unit is evenly distributed on second base (5-1) and the second pushnut (5- at end
2) on；Second base (5-1) is fixed on casing (6) inner wall, and second base is equipped with the installation through-hole passed through for screw rod (1)
(12)；
It is matched with each support unit of the first anchoring piece (4) and the second anchoring piece (5) respectively that described sleeve pipe (6) is equipped with position
First strip-shaped hole (6-1) and the second strip-shaped hole (6-2), second base (5-1) are fixed on the second strip-shaped hole close to the first strip-shaped hole
One end end internal surface of sleeve pipe on；
First pushnut (4-2) and the second pushnut (5-2) are mounted on the first thread segment (1-1) of screw rod (1), screw rod
The first thread segment pass through the installation through-hole (12) of second base, the clamping joint (7) of screw rod is connected to the clamping groove of first base
(11) in, clamping groove (11) limitation screw rod can only be rotated around the axis of screw rod；Rotary screw (1) can drive the first pushnut
(4-2) and the second pushnut (5-2) move on the first thread segment (1-1), so as to adjust the top (10) of each support unit
The distance between the wall of a borehole；Pallet (3) is mounted on the second thread segment (1-2) of screw rod by fixture nut (2).
2. according to claim 1 can be recycled mechanical prestressed anchor, which is characterized in that top (10) connects with the wall of a borehole
The face of touching be plane or with the matched cambered surface of the wall of a borehole radian, in the first pushnut (4-2) and the second pushnut (5-2)
During drive mobile on the first thread segment (1-1) drives top (10) to move, the first anchoring piece (4) and the second anchoring piece
(5) face that the top (10) of each support unit is contacted with the wall of a borehole is parallel with the axis of drilling rod always.
3. according to claim 1 can be recycled mechanical prestressed anchor, which is characterized in that the first anchoring piece and the second anchor
It further include anchor plate (13) in firmware, anchor plate is arranged at each first strip-shaped hole and each second strip-shaped hole, and the one of each anchor plate
End is hinged on the outer wall of casing, and the articulated position of anchor plate and sleeve outer wall is located at the first strip-shaped hole and the second strip-shaped hole is close
It drills on the sleeve outer wall of bottom one end end；Anchor plate is equipped with third strip-shaped hole (13-1), and top (10) is equipped with and third
The matched sliding block of strip-shaped hole (10-1), sliding block are equipped with threaded hole, and sliding block passes through third strip-shaped hole (13-1) by being fixed on spiral shell
Threaded fixed column (10-2) in pit is fixed on anchor plate；Rotary screw (1) can drive the top of each support unit
Sliding block moved in the third strip-shaped hole of anchor plate, and then drive the non-articulated end of anchor plate to the wall of a borehole or screw motion.
4. according to claim 3 can be recycled mechanical prestressed anchor, which is characterized in that the non-articulated of anchor plate (13)
The edge at end is arc-shaped, when top moves, and the non-articulated end of anchor plate and the wall of a borehole is driven to contact, the non-hinge of anchor plate (13)
The edge for connecing end is bonded with the wall of a borehole.
5. existing according to claim 1 to recyclable mechanical prestressed anchor, feature described in any one of 4 claims
In the length of upper supporting piece (8) and lower support element (9) on the first anchoring piece and the second anchoring piece should meet when first promotes spiral shell
Female (4-2) and the second pushnut (5-2) are moved to top or anchor plate on the first thread segment (1-1) and contact with the wall of a borehole
When, the angle between upper supporting piece (8) and lower support element (9) is obtuse angle.
6. existing according to claim 1 to recyclable mechanical prestressed anchor, feature described in any one of 4 claims
In, clamping joint (7) is made of clamping joint body (7-1) and clamping neck (7-2), and clamping joint body and clamping neck are cylindrical,
Clamping joint body and the axis for being clamped neck are overlapped with the axis of screw rod, and the diameter for being clamped neck is less than the diameter of clamping joint body.
7. according to claim 6 can be recycled mechanical prestressed anchor, which is characterized in that first base (4-1) is by a left side
Right two parts composition, left and right two parts are fixed as one by bolt pair (14), be all provided on the two parts of left and right it is fluted, through bolt
The clamping groove (11) of groove composition first base after pair is fixed as one on the two parts of left and right, clamping groove include and clamping joint body
Matched clamping joint body receiving portion and with clamping the matched clamping neck receiving portion of neck.
8. existing according to claim 1 to recyclable mechanical prestressed anchor, feature described in any one of 4 claims
In the length of the first strip-shaped hole (6-1) is at least the upper supporting piece (8) and lower support element of the support unit of the first anchoring piece (4)
(9) 0.8 times of the sum of length, the length of the second strip-shaped hole are at least the upper supporting piece of the support unit of the second anchoring piece (5)
(8) with 0.8 times of the sum of the length of lower support element (9).
9. existing according to claim 1 to recyclable mechanical prestressed anchor, feature described in any one of 4 claims
In upper supporting piece (8) and lower support element (9) on the first anchoring piece and the second anchoring piece are support bar, each group of upper supporting piece
Including two support bars, each group of lower support element includes two support bars, the equal length of each support bar.
10. the installation and recycling of mechanical prestressed anchor can be recycled described in a kind of any one of claims 1 to 9 claim
Method, which is characterized in that steps are as follows:
1. drilling through drilling (16) in country rock；
2. the angle adjusted between the first anchoring piece and the upper supporting piece and lower support element of the second anchoring piece makes each support unit
Top comes directly towards from stretching in the first strip-shaped hole and the second strip-shaped hole and after mechanical prestressed anchor can be recycled and be put into drilling
Or anchor plate does not contact the wall of a borehole, mechanical prestressed anchor, which then will can be recycled, and be put into drilling makes first base resist drilling
Bottom, rotation screw rod drive the first pushnut and the second pushnut to move to drilling bottom direction and top are driven to transport to the wall of a borehole
It is dynamic, until the movable end of top or anchor plate is contacted with the wall of a borehole generates prestressing force, screw rod is persistently rotated to prestress application
It finishes, pallet is fixed on hell by the fixture nut on the second thread segment, that is, complete that mechanical prestressed anchor can be recycled
The installation of bar；
3. unscrewing the fixture nut on the second thread segment after the completion of supporting task, then rotates screw rod and drive first to promote
Nut and the second pushnut move to hell direction and drive top to screw motion, until top or anchor plate and drilling
Wall disengages, and mechanical prestressed anchor will can be recycled and take out from drilling, that is, completes that mechanical prestressed anchor can be recycled
Recycling.
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| CN201910750478.9A CN110469353B (en) | 2019-08-14 | 2019-08-14 | Recyclable mechanical prestress anchor rod and mounting and recycling method thereof |
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| CN201910750478.9A CN110469353B (en) | 2019-08-14 | 2019-08-14 | Recyclable mechanical prestress anchor rod and mounting and recycling method thereof |
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| CN111321735A (en) * | 2020-03-06 | 2020-06-23 | 中南林业科技大学 | Mechanical pressure dispersion type recoverable anchor rod device |
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| CN115198722A (en) * | 2022-08-24 | 2022-10-18 | 青岛理工大学 | Anchor rod for reinforcing soft soil foundation of flood plain terrain |
| CN115369929A (en) * | 2022-09-22 | 2022-11-22 | 中国五冶集团有限公司 | Post-cast anti-floating anchor rod construction method |
| EP4257795A1 (en) * | 2022-04-08 | 2023-10-11 | Sandvik Mining and Construction Australia (Production/Supply) Pty Ltd | A rock bolt |
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| CN110873258B (en) * | 2019-11-26 | 2024-04-12 | 四川大学 | Inner wall detection device and inner wall detection system |
| CN111321735A (en) * | 2020-03-06 | 2020-06-23 | 中南林业科技大学 | Mechanical pressure dispersion type recoverable anchor rod device |
| CN111877370A (en) * | 2020-07-15 | 2020-11-03 | 郑明华 | Side slope supporting structure |
| CN111877370B (en) * | 2020-07-15 | 2022-04-15 | 中色资源环境工程股份有限公司 | Side slope supporting structure |
| CN111945750B (en) * | 2020-07-25 | 2021-09-28 | 重庆六零七工程勘察设计有限公司 | Landslide control method |
| CN111945750A (en) * | 2020-07-25 | 2020-11-17 | 重庆六零七工程勘察设计有限公司 | Landslide control method |
| CN112160782A (en) * | 2020-09-30 | 2021-01-01 | 辽宁工程技术大学 | Multi-stage retractable anti-falling anchor rod structure and using method |
| CN112798037A (en) * | 2020-10-23 | 2021-05-14 | 中南大学 | Grid type rock mass stress and vibration monitoring device based on pipe seam type anchor rod, auxiliary installation device and installation and use method |
| CN112523208A (en) * | 2020-11-18 | 2021-03-19 | 重庆市二零五勘测设计有限公司 | Prestressed anchor rod and construction method thereof |
| CN112761145A (en) * | 2020-12-23 | 2021-05-07 | 苏交科集团股份有限公司 | Self-adaptive anchoring device for deformed slope and construction method thereof |
| WO2022188274A1 (en) * | 2021-03-09 | 2022-09-15 | 中国矿业大学 | Device and method for monitoring separated-bed dynamic development during overlying strata mining |
| US11879336B2 (en) | 2021-03-09 | 2024-01-23 | China University Of Mining And Technology | Monitoring device and method for dynamic development of overburden mining separated bed |
| CN113323702A (en) * | 2021-06-17 | 2021-08-31 | 文山麻栗坡紫金钨业集团有限公司 | Transmission expansion type anchor rod and installation method thereof |
| CN113279800A (en) * | 2021-06-29 | 2021-08-20 | 华亭煤业集团有限责任公司 | Anchoring part fastening device for physical model experiment and using method thereof |
| CN113279800B (en) * | 2021-06-29 | 2023-08-18 | 华亭煤业集团有限责任公司 | Anchor part fastening device for physical model experiment and use method thereof |
| CN114606936A (en) * | 2022-01-20 | 2022-06-10 | 扬州大学 | Self-expanding type expansion recoverable anchor rod |
| EP4257795A1 (en) * | 2022-04-08 | 2023-10-11 | Sandvik Mining and Construction Australia (Production/Supply) Pty Ltd | A rock bolt |
| CN115198722A (en) * | 2022-08-24 | 2022-10-18 | 青岛理工大学 | Anchor rod for reinforcing soft soil foundation of flood plain terrain |
| CN115369929A (en) * | 2022-09-22 | 2022-11-22 | 中国五冶集团有限公司 | Post-cast anti-floating anchor rod construction method |
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