CN207829927U - A kind of block assembly formula allows pressure hollow grouting anchor - Google Patents
A kind of block assembly formula allows pressure hollow grouting anchor Download PDFInfo
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- CN207829927U CN207829927U CN201721645431.9U CN201721645431U CN207829927U CN 207829927 U CN207829927 U CN 207829927U CN 201721645431 U CN201721645431 U CN 201721645431U CN 207829927 U CN207829927 U CN 207829927U
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- hollow
- anchor
- rod
- anchor cable
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- 238000007569 slipcasting Methods 0.000 claims abstract description 25
- 230000011218 segmentation Effects 0.000 claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 8
- 239000011435 rock Substances 0.000 abstract description 16
- 230000008901 benefit Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000725 suspension Substances 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 11
- 239000002002 slurry Substances 0.000 description 10
- 238000010276 construction Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000011083 cement mortar Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000009955 starching Methods 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
It is allowed the utility model discloses a kind of block assembly formula and presses hollow grouting anchor, including hollow bolt body, the hollow anchor cable body of rod, and it is laid on hollow bolt body and allows pressure device, pallet, nut and stop grouting plug, the anchor cable cuff and Counterboring apparatus being laid on the hollow anchor cable body of rod, hollow bolt body are connected with the hollow anchor cable body of rod by connector sleeve.The utility model can give full play to the advantage of both anchor pole and anchor cable, both suspension function of the anchor pole to superficial part country rock can have been utilized, anchor cable is utilized to improve the stability of deep wall rock again, by allowing the pressure device centering spare anchor body of rod to play good independence, multiple spot allow pressure effect, the total tune of the hollow anchor cable body of rod is improved by anchor cable cuff, Counterboring apparatus realizes multiple spot slip casting, can free adjusting rod body length as needed, convenient for site operation and adjusting.
Description
Technical field
The utility model is related to geotechnical engineering anchoring and engineering support fields, and in particular to a kind of block assembly formula allows in pressure
Empty grouted anchor bar.
Background technology
In underground engineering, mining engineering, Tunnel Engineering, foundation pit and slope project, anchor pole is to stratum consolidation, prevents ground
Layer deformation, unstability main support technology, hollow grouting anchor is main by the interaction of anchor pole, injecting cement paste, hole wall rock mass power
The dynamic strength and stability for improving Rock And Soil, makes up to safety and stability state.Anchor cable uses the steel strand wires system of flexible
At having many advantages, such as that easy for installation, anchorage depth is big, bearing capacity is high and actively reinforce country rock, be widely used in underground work
In the supporting construction of journey.
Anchor pole and anchor cable are combined together, the advantage of the two can be played jointly, and more at present is to use steel
Twisted wire and screw-thread steel are integrally welded, but exist and be welded to connect reduction screw-thread steel and steel strand wires intensity, and binder bonds degree
Inadequate disadvantage.The Chinese patent of Patent No. 201510091352.7, the construction method of assembled hollow grouting anchor, provides
A kind of assembled hollow grouting anchor, had not only realized the assembled connection of anchor pole, anchor cable, but also realized the part of detachable section
Disassembly ＆ recycling, but the advantage of Anchor Cable Technique is that anchorage depth is big, above-mentioned patent fails to play the advantage of anchor cable well, and
Not in entire armature boring, slurries are reinforced in injection, can not achieve the effect of full length fastening.Therefore, the utility model provides a kind of
Block assembly formula, which allows, presses hollow grouting anchor, has played anchor pole tensile strength height, the big advantage of anchorage cable anchoring depth, knot well
Structure is reasonable, convenient for disassembly and assembly, and anchoring strength is big, can realize and allow compressive strain in real time, be suitable for various underground support operations.
Utility model content
In view of the deficiencies of the prior art, a kind of block assembly formula of the utility model offer, which allows, presses hollow grouting anchor, can
Anchor pole and the respective advantage of anchor cable are rationally effectively played, it is reasonable for structure, it is convenient for disassembly and assembly, it realizes and allows compressive strain in real time.For realize with
Upper purpose, the utility model are achieved by the following technical programs：
A kind of block assembly formula allows pressure hollow grouting anchor, including hollow bolt body, the hollow anchor cable body of rod, is laid in described
Allow pressure device, pallet, nut and stop grouting plug on hollow bolt body, the anchor cable cuff that is laid on the hollow anchor cable body of rod and
Counterboring apparatus, the hollow bolt body are connected with the hollow anchor cable body of rod by connector sleeve.
Further, the hollow bolt body includes multistage segmentation hollow bolt body, the length of the segmentation hollow bolt body
Degree is 0.5-1.0m, and number is 2-6, and external screw thread processing, the external thread length are made in the both ends of the segmentation hollow bolt body
To allow the half of pressure device length, the segmentation hollow bolt body radially length direction every 50mm to wearing the hole of Φ 5mm
It is described that pressure device is allowed to include allowing pressing sleeve cylinder and compressed spring as bolt grouting hole, it is described to allow in being internally provided with of pressing sleeve cylinder
Screw thread, for being connect with the external screw thread at the segmentation hollow bolt body both ends, the compressed spring is laid in the pressing sleeve cylinder that allows
Inside plays the role of compression and allows pressure, and hollow bolt body is segmented described in multistage and allows allowing in pressing sleeve cylinder in pressure device by described
External screw thread connection forms the hollow bolt body.
Further, the hollow anchor cable body of rod is fitted closely by more steel strand reversal turn-knobs, the steel strand wires
There are 8-14 roots, forms a hollow slip casting channel inside the hollow anchor cable body of rod, the hollow anchor cable body of rod is laid with multiple institutes
Anchor cable cuff and Counterboring apparatus are stated, the anchor cable cuff is annular shape, and internal diameter is equal with the hollow diameter of the anchor cable body of rod, is used
In binding the hollow anchor cable body of rod, the Counterboring apparatus is annular shape, and outer diameter is more than hollow note in the hollow anchor cable body of rod
The diameter for starching channel, for expanding the hollow slip casting channel to form slip casting hole.
Further, the hollow bolt body and the hollow anchor cable body of rod are connected through a screw thread with the connector sleeve, wherein institute
It states hollow bolt body and the hollow anchor cable body of rod does external screw thread processing with the section that is connected of the connector sleeve, the connector sleeve does internal thread
Processing.
Further, it after the hollow bolt body is connected with the hollow anchor cable body of rod by the connector sleeve, is formed in inside
The hollow slip casting channel reinforces slurries for injecting.
Further, described to make the outer diameter of pressure device and anchor cable cuff equal, it can both play respectively work as described above
With, and fixing anchor bar position in the borehole can be played the role of.
Further, a kind of above-mentioned block assembly formula allows the construction method that pressure hollow grouting anchor uses, including as follows
Step：
A it), assembles：Assemble a kind of block assembly formula allow pressure hollow grouting anchor, according to actual needs design anchor pole it is long
Degree, and pressure device, anchor cable cuff and Counterboring apparatus are allowed described in laying on it；
B), drilling, borehole cleaning and inspection：Drilled out in country rock with the drilling for making pressure device, anchor cable cuff outer diameter consistent,
Aggregate chips and tiny stone in drilling are blown off with high-pressure blast simultaneously, checks whether the hole depth of drilling meets design and rock-bolt length is wanted
It asks；
C it), squeezes into and fixing anchor bar：It allows pressure hollow grouting anchor to be sent into a kind of assembled block assembly formula to bore
Kong Zhong should make the hollow bolt body and the hollow anchor cable body of rod be located at the center of drilling, full length fastening be carried out, in anchor pole
The stop grouting plug is installed in tail portion, installs the pallet in the revealed section of country rock, while tightening the nut, and according to design requirement
Apply pretightning force；
D), slip casting and sealing：The reinforcing slurries, generally use water are injected by the hollow slip casting channel in anchor pole
Cement mortar blocks the slip casting end of anchor pole with Anchor Agent in time after slip casting.
Compared with prior art, the advantageous effects that the utility model has are：
(1) the utility model gives full play to the advantage of both anchor pole and anchor cable, can carry out initial full length fastening, provide higher
Initial pretightening force, the stability of deep wall rock is actively improved using the big advantage of anchorage cable anchoring depth, it is strong using anchor pole tension
Spend the suspension function that big advantage fully demonstrates anchor pole to superficial part breaking surrounding rock；
(2) multistage for allowing pressure device realization hollow grouting anchor of setting connects, and passes through internal compressed spring and wraps up
Hollow grouting anchor can play good independence, multiple spot allows and presses effect, guarantee anchor rod body drastic deformation energy inside country rock
Release action under without be pulled off failure；
(3) the effectively connection of the hollow anchor cable body of rod is integral by multiple anchor cable cuffs so that more steel strand wires fittings
Closely, globality and the compatibility of deformation for effectively improving anchor cable prevent the steel strand wires caused by unbalance stress from breaking failure, by more
A Counterboring apparatus realizes the multiple spot slip casting of the hollow anchor cable body of rod, is conducive to slurries and spreads；
(4) hollow bolt body and the hollow anchor cable body of rod open up corresponding bolt grouting hole and anchor cable at a certain distance
Slip casting hole, and make pressure device, anchor cable cuff identical as bore diameter, so that anchor pole is fixed on drilling centre position, separately
On the one hand the circulation for having separated slurries is also prevented so that the good infiltration injection between broken crack of each section of slurries reaches segmentation
The effect of uniform slip casting；
(5) the block assembly formula makes pressure hollow grouting anchor structure easy to assembly, can free adjusting rod according to the design needs
Body length is convenient for site operation and adjusting.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 be a kind of block assembly formula of the utility model allow pressure hollow grouting anchor structural schematic diagram；
Fig. 2 is the utility model segmentation hollow bolt body and allows the connection diagram of pressure device；
Fig. 3 is the A-A sectional views of Fig. 1 and Fig. 2；
Fig. 4 is the hollow anchor cable body of rod of the utility model, anchor cable cuff, Counterboring apparatus assembly position view；
Fig. 5 is the B-B sectional views of Fig. 1 and Fig. 4；
Fig. 6 is the C-C sectional views of Fig. 1 and Fig. 4；
Fig. 7 is the D-D sectional views of Fig. 1 and Fig. 4；
Fig. 8 is the utility model hollow bolt body and hollow anchor cable body of rod connection diagram；
Fig. 9 is that a kind of block assembly formula of the utility model allows pressure hollow grouting anchor to squeeze into the schematic diagram after country rock；
Wherein, 1, hollow bolt body；2, the hollow anchor cable body of rod；3, connector sleeve；4, pallet；5, nut；6, stop grouting plug；7, outer
Screw thread；8, internal thread；9, hollow slip casting channel；11, it is segmented hollow bolt body；12, bolt grouting hole；13, pressure device is allowed；
14, pressing sleeve cylinder is allowed；15, compressed spring；21, steel strand wires；22, anchor cable cuff；23, Counterboring apparatus；24, anchor rope grouting hole；
101, slurries are reinforced；102, country rock
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model
Example is applied, all other embodiment that those of ordinary skill in the art are obtained without creative efforts all belongs to
In the range of the utility model protection.
In conjunction with Fig. 1 and Fig. 9, the utility model is described in further detail：
Embodiment 1：
As shown in Figure 1, a kind of block assembly formula, which allows, presses hollow grouting anchor, including hollow bolt body 1, the hollow anchor cable body of rod
2, it is laid on hollow bolt body 1 and allows pressure device 13, pallet 4, nut 5 and stop grouting plug 6, be laid on the hollow anchor cable body of rod 2
Anchor cable cuff 22 and Counterboring apparatus 23, hollow bolt body 1 be connected by connector sleeve 3 with the hollow anchor cable body of rod 2.
As shown in Fig. 2, hollow bolt body 1 includes multistage segmentation hollow bolt body 11, the length of segmentation hollow bolt body 11
For 1.0m, number is 4, and the processing of external screw thread 7 is made at the both ends of segmentation hollow bolt body 11, and the length of external screw thread 7 is to allow pressure device
The half of 13 length, i.e. 0.2m, radially length direction every 50mm to wearing the hole of Φ 5mm as bolt grouting hole 12,
Allow pressure device 13 to include allowing pressing sleeve cylinder 14 and compressed spring 15, allow pressing sleeve cylinder 14 is internally provided with internal thread 8, for in segmentation
The external screw thread 7 of the spare anchor body of rod 11 connects, length 0.4m, and number is 3, allows pressing spring 15 to be laid in and allows inside pressing sleeve cylinder 14,
Play the role of compression and allows pressure.As shown in Figure 1, multistage segmentation hollow bolt body 11 allows pressing sleeve cylinder 14 in pressure device 13 by allowing
Internal and external threads connection composition hollow bolt body 1.Fig. 3 show Section A-A sectional view in Fig. 1 and Fig. 2.
As shown in Figure 4, Figure 5, Figure 6 and Figure 7, the hollow anchor cable body of rod 2 fitted closely by more 21 contrahelicals of steel strand wires and
At steel strand wires 21 have 12, and 2 inside of the hollow anchor cable body of rod forms a hollow slip casting channel 9, is laid with multiple 22 Hes of anchor cable cuff
Counterboring apparatus 23, anchor cable cuff 22 are annular shape, and internal diameter is equal with the diameter of the hollow anchor cable body of rod 2, for binding hollow anchor cable
The body of rod 2, Counterboring apparatus 23 are annular shape, and outer diameter is more than the diameter in hollow slip casting channel 9 in the hollow anchor cable body of rod 2, for expanding
Hollow slip casting channel 9 is to form slip casting hole 24.Anchor cable cuff 22 and the Counterboring apparatus 23 uniform cloth on the hollow anchor cable body of rod 2
It sets, the quantity of the present embodiment stream line cuff 22 is four, and the quantity of Counterboring apparatus 23 is three.Divide shown in Fig. 5, Fig. 6 and Fig. 7
It Wei not B-B, C-C and D-D cross-sectional view in Fig. 1 and Fig. 4.
As shown in figure 8, hollow bolt body 1 and the hollow anchor cable body of rod 2 are connected with connector sleeve 3 by screw thread, wherein middle spare anchor
The body of rod 1 and the hollow anchor cable body of rod 2 do external screw thread 7 with the section that is connected of connector sleeve 3 and handle, and connector sleeve 3 does the processing of internal thread 8.
As shown in Fig. 1 and Fig. 9, it after hollow bolt body 1 and the hollow anchor cable body of rod 2 are connected by connector sleeve 3, is formed in inside
Hollow slip casting channel 9 reinforces slurries 101 for injecting.Fig. 9 show the utility model and squeezes into the reinforcing schematic diagram after country rock.
In addition, as shown in Fig. 1 and Fig. 9, make pressure device 13 equal with the outer diameter of anchor cable cuff 22, and in country rock 102
Bore diameter is equal, can not only play each self-applying as shown above, but also can play the work of fixing anchor bar position in the borehole
With.
Above-mentioned block assembly formula allows the construction method that pressure hollow grouting anchor uses, including following construction procedure：
A it), assembles：Assembling block assembly formula, which allows, presses hollow grouting anchor, according to actual needs real-time design rock-bolt length,
The length of segmentation hollow bolt body 11 in the present embodiment 1 is 1.0m, and number is 4, and the length of the hollow anchor cable body of rod 2 is
5000mm, and lay allow pressure device 13, anchor cable cuff 22 and Counterboring apparatus 23 on it；
B), drilling, borehole cleaning and inspection：It is drilled out in country rock 102 and allows the consistent brill of pressure device 13,22 outer diameter of anchor cable cuff
Hole, while aggregate chips and tiny stone in drilling are blown off with high-pressure blast, check whether the hole depth of drilling meets design and anchor pole is long
Degree requires；
C it), squeezes into and fixing anchor bar：It allows pressure hollow grouting anchor to be sent into drilling assembled block assembly formula, should make
Hollow bolt body 1 and the hollow anchor cable body of rod 2 are located at the center of drilling, carry out full length fastening, and in the tail portion of anchor pole, installation stops
Slurry plug 6 installs pallet 4 in the revealed section of country rock 102, while tightening nut 5, and applies pretightning force according to design requirement；
D), slip casting and sealing：Slurries 101 are reinforced by hollow slip casting channel 9 injection in anchor pole, the present embodiment uses water
Cement mortar blocks the slip casting end of anchor pole with Anchor Agent in time after slip casting.
Embodiment 2：
A kind of block assembly formula allows pressure hollow grouting anchor, wherein the length of segmentation hollow bolt body 11 is 1.0m, number
It is 2, allows the length of pressure device to be 0.4m, number is 1, and the hollow anchor cable body of rod 2 is closely pasted by 8 21 contrahelicals of steel strand wires
It closes, length 6300mm.Remaining construction method, step are same as Example 1.
Embodiment 3：
A kind of block assembly formula allows pressure hollow grouting anchor, wherein the length of segmentation hollow bolt body 11 is 0.5m, number
It is 6, allows the length of pressure device to be 0.4m, number is 5, and the hollow anchor cable body of rod 2 is close by 14 21 contrahelicals of steel strand wires
It is bonded, length 5000mm.Remaining construction method, step are same as Example 1.
It should be noted that above example is only to illustrate the technical solution of the utility model, rather than its limitations, to the greatest extent
Pipe is with reference to the foregoing embodiments described in detail the utility model, and those of ordinary skill in the art should understand that：Its according to
So can be with technical scheme described in the above embodiments is modified, or which part technical characteristic is equally replaced
It changes, and these modifications or replacements, various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
Spirit and scope.
Claims (6)
1. a kind of block assembly formula, which allows, presses hollow grouting anchor, which is characterized in that including hollow bolt body (1), hollow anchor cable bar
Body (2) is laid on the hollow bolt body (1) and allows pressure device (13), pallet (4), nut (5) and stop grouting plug (6), lays
In anchor cable cuff (22) and Counterboring apparatus (23), the hollow bolt body (1) and middle spare anchor on the hollow anchor cable body of rod (2)
The rope body of rod (2) is connected by connector sleeve (3).
2. a kind of block assembly formula according to claim 1, which allows, presses hollow grouting anchor, which is characterized in that the middle spare anchor
The body of rod (1) includes multistage segmentation hollow bolt body (11), and the length of the segmentation hollow bolt body (11) is 0.5-1.0m, number
It is 2-6, external screw thread (7) processing is made at the both ends of the segmentation hollow bolt body (11), and external screw thread (7) length is to allow press fitting
Set the half of (13) length, the segmentation hollow bolt body (11) radially length direction every 50mm to wearing the hole of Φ 5mm
It is described that pressure device (13) is allowed to include allowing pressing sleeve cylinder (14) and compressed spring (15) as bolt grouting hole (12), the pressure that allows
Sleeve (14) is internally provided with internal thread (8), for being connect with the external screw thread (7) at described segmentation hollow bolt body (11) both ends,
The compressed spring (15) makes pressing sleeve cylinder (14) internal described in being laid in, and segmentation hollow bolt body (11) described in multistage passes through described
Allowing in pressure device (13) allows the connection of pressing sleeve cylinder (14) internal and external threads to form the hollow bolt body (1).
3. a kind of block assembly formula according to claim 1, which allows, presses hollow grouting anchor, which is characterized in that the middle spare anchor
The rope body of rod (2) is fitted closely by more steel strand wires (21) contrahelicals, and the steel strand wires (21) have 8-14 roots, described hollow
A hollow slip casting channel (9) is formed inside the anchor cable body of rod (2), the hollow anchor cable body of rod (2) is laid with multiple anchor cable sets
(22) and Counterboring apparatus (23) are bound round, the anchor cable cuff (22) is annular shape, the diameter of internal diameter and the hollow anchor cable body of rod (2)
Equal, the Counterboring apparatus (23) is annular shape, and outer diameter is more than hollow slip casting channel (9) in the hollow anchor cable body of rod (2)
Diameter.
4. a kind of block assembly formula according to claim 1, which allows, presses hollow grouting anchor, which is characterized in that the middle spare anchor
The body of rod (1) and the hollow anchor cable body of rod (2) are connected through a screw thread with the connector sleeve (3), wherein the hollow bolt body (1) and in
The spare anchor rope body of rod (2) does external screw thread (7) processing with the section that is connected of the connector sleeve (3), and the connector sleeve (3) does internal thread (8)
Processing.
5. a kind of block assembly formula according to claim 3, which allows, presses hollow grouting anchor, which is characterized in that the middle spare anchor
After the body of rod (1) and the hollow anchor cable body of rod (2) are connected by the connector sleeve (3), the hollow slip casting channel is formed in inside
(9)。
6. a kind of block assembly formula according to claim 1 allows pressure hollow grouting anchor, which is characterized in that described to allow press fitting
The outer diameter for setting (13) and anchor cable cuff (22) is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721645431.9U CN207829927U (en) | 2017-11-30 | 2017-11-30 | A kind of block assembly formula allows pressure hollow grouting anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721645431.9U CN207829927U (en) | 2017-11-30 | 2017-11-30 | A kind of block assembly formula allows pressure hollow grouting anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207829927U true CN207829927U (en) | 2018-09-07 |
Family
ID=63387059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721645431.9U Expired - Fee Related CN207829927U (en) | 2017-11-30 | 2017-11-30 | A kind of block assembly formula allows pressure hollow grouting anchor |
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| Country | Link |
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| CN (1) | CN207829927U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829767A (en) * | 2017-11-30 | 2018-03-23 | 安徽理工大学 | A kind of block assembly formula, which allows, presses hollow grouting anchor and its construction method |
-
2017
- 2017-11-30 CN CN201721645431.9U patent/CN207829927U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829767A (en) * | 2017-11-30 | 2018-03-23 | 安徽理工大学 | A kind of block assembly formula, which allows, presses hollow grouting anchor and its construction method |
| CN107829767B (en) * | 2017-11-30 | 2024-02-27 | 安徽理工大学 | Sectional assembly type yielding hollow grouting anchor rod and construction method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180907 |