CN221610010U - Resistance-increasing large-deformation energy-absorbing anchor cable - Google Patents
Resistance-increasing large-deformation energy-absorbing anchor cable Download PDFInfo
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- CN221610010U CN221610010U CN202420034732.1U CN202420034732U CN221610010U CN 221610010 U CN221610010 U CN 221610010U CN 202420034732 U CN202420034732 U CN 202420034732U CN 221610010 U CN221610010 U CN 221610010U
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- Prior art keywords
- resistance
- increasing
- taper pipe
- anchoring
- sliding
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- 238000004873 anchoring Methods 0.000 claims abstract description 65
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 53
- 239000010959 steel Substances 0.000 claims abstract description 53
- 239000002360 explosive Substances 0.000 claims abstract description 50
- 238000001125 extrusion Methods 0.000 claims abstract description 19
- 239000000126 substance Substances 0.000 claims abstract description 14
- 238000003780 insertion Methods 0.000 claims abstract description 11
- 230000037431 insertion Effects 0.000 claims abstract description 11
- 210000001503 joint Anatomy 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000005553 drilling Methods 0.000 claims description 7
- 239000010410 layer Substances 0.000 claims description 7
- 239000011247 coating layer Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 230000008093 supporting effect Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 8
- 239000011435 rock Substances 0.000 description 13
- 239000003814 drug Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model belongs to the technical field of mine roadways and geotechnical engineering support, and relates to an energy-absorbing anchor cable with resistance-increasing and deformation-increasing functions, which comprises steel strands, wherein the steel strands are arranged in a drill hole, and a chemical anchor head, a sliding section, an anchoring section and a limiting rubber plug are sequentially arranged at the drill hole insertion end of the steel strands; the anchoring section consists of a plurality of anchoring cartridges; the sliding section comprises an extrusion anchor which is sequentially connected with the sliding explosive roll and the resistance-increasing taper pipe; the resistance-increasing taper pipe adopts a seamless taper pipe, the small-diameter end of the resistance-increasing taper pipe is in butt joint with the anchoring section, and the large-diameter end of the resistance-increasing taper pipe is in butt joint with the sliding explosive roll; the inner hole of the resistance-increasing taper pipe is a taper hole and is used for being sleeved on the insertion end of the steel strand, so that the failure of large sliding resistance and large deformation capacity is avoided in the supporting process, and sufficient supporting resistance can be provided.
Description
Technical Field
The utility model belongs to the technical field of mine roadways and geotechnical engineering support, and particularly relates to an energy-absorbing anchor cable with resistance-increasing and deformation-increasing functions.
Background
Along with the exhaustion of shallow resources, deep resource exploitation becomes a main support for economic development of China in the future. The deep surrounding rock is extremely easy to generate engineering disasters such as large-volume collapse, large-area caving, large deformation of the roadway and the like, and the instability and the large deformation of the surrounding rock and the like under the high-stress and strong-unloading environment. The anchor bolt supporting strength is usually below 150kN, the anchor rope supporting strength can reach 450kN, the length of the anchor bolt is usually below 6m, and the length of the anchor rope can reach 30m, so that the anchor rope supporting can provide larger anchoring force, and the anchor rope supporting device can be suitable for preventing and controlling more broken rock bodies.
The traditional anchor cable mostly adopts a resin anchoring agent or a cement mortar anchoring agent, and the supporting effect is greatly limited by the anchoring agent. The longer the anchoring agent, the larger the anchoring force is provided, but the shorter the free deformation section of the anchor cable is, the harder the elongation performance of the steel strand is exerted, and the smaller the deformation capacity of the steel strand is; the anchoring force is small when the anchoring agent is short, and slip failure is easy to occur. The anchor cable is anchored in the whole length, the anchoring agent is anchored in the whole length, the whole rigidity is high, the free deformation section is small, the deformation capacity is weak, the energy absorption characteristic is weak, and the anchor cable is extremely easy to break and fail in the surrounding rock large deformation process; and the anchor rope anchored at the end part is anchored at the end part only, the free deformation section grows, the deformation capacity is enhanced, and the whole energy absorbing capacity is weak.
For this reason, chinese patent application with publication number CN111648805A discloses a resistance-increasing deformation anchor cable for deep yielding support, which extrudes a multistage yielding ring through a wedge-shaped extrusion anchor sliding body to realize sliding yielding deformation; the Chinese patent application with publication number CN 109162743A discloses a friction-shearing combined quasi-constant resistance large deformation anchor cable, which can generate a larger displacement in a loop bar by shearing and damaging a shearing core by a pressing anchor head; the Chinese patent application with publication number of CN 215256268U discloses a prestress large-deformation anchor cable, which is characterized in that an anchor device is used for extruding an inner sleeve, so that the inner end of the inner sleeve stretches into a shrinkage tube to be extruded and shrunk and deformed, and the inner sleeve is gradually extruded out of the outer sleeve, thereby achieving the aim of high and strong deformation.
Therefore, the existing energy-absorbing anchor cable increases the sliding resistance and large deformation capacity by additionally installing a friction type sliding structure. There are general problems that in order to provide sufficient supporting resistance, the requirements on the manufacturing process and the use of the friction type sliding structure are high, and the friction can cause failure of large sliding resistance and large deformation capacity due to aging, corrosion and the like in the application process.
Disclosure of utility model
The utility model provides an energy-absorbing anchor cable with resistance-increasing and large deformation, which at least solves the problem of avoiding failure of large sliding resistance and large deformation capacity in the supporting process.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
an energy-absorbing anchor cable with increased resistance and large deformation comprises
The steel strand is arranged in the drilling hole, and a chemical anchor head, a sliding section, an anchoring section and a limiting rubber plug are sequentially arranged at the drilling hole insertion end of the steel strand; the anchoring section consists of a plurality of anchoring cartridges;
The sliding section comprises an extrusion anchor which is sequentially connected with the sliding explosive roll and the resistance-increasing taper pipe;
The resistance-increasing taper pipe adopts a seamless taper pipe, the small-diameter end of the resistance-increasing taper pipe is in butt joint with the anchoring section, and the large-diameter end of the resistance-increasing taper pipe is in butt joint with the sliding explosive roll; the inner hole of the resistance-increasing taper pipe is a taper hole and is used for being sleeved on the insertion end of the steel strand.
The chemical anchor head comprises a quick resin cartridge or a quick setting cement cartridge.
The extrusion anchor consists of an extrusion sleeve and a steel wire bushing.
The anchoring explosive roll and the sliding explosive roll are hollow expansion explosive rolls.
The hollow expansion cartridge comprises a hollow cartridge cylinder, wherein the hollow cartridge cylinder adopts a double-layer structure with one end open and one end closed, an expansion anchoring agent is filled in a cavity of the hollow cartridge cylinder, and a circular sealing cover is arranged at an annular opening of the hollow cartridge cylinder and used for sealing the expansion anchoring agent.
And a plurality of water permeable holes are uniformly formed in the outer wall of the hollow cartridge cylinder.
The outer surface of the hollow cartridge cylinder is stuck with a water-absorbing sponge coating layer.
The inner diameter of the orifice of the large-diameter end of the resistance-increasing taper pipe is larger than the outer diameter of the sliding explosive roll, and the outer diameter of the orifice of the small-diameter end of the resistance-increasing taper pipe is smaller than the outer diameter of the anchoring explosive roll.
The friction force between the anchoring explosive roll and the inner wall of the drill hole is marked as F 1, the friction force between the anchoring explosive roll and the steel strand is marked as F 2, the resistance of the sliding explosive roll when acting on the resistance-increasing taper pipe to deform the resistance-increasing taper pipe is marked as F 3, the ultimate drawing strength of the steel strand is marked as F 4, and F1＞F2,F1＞F3,F1＞F4;F4≥F3>F2.
The exposed ends of the steel strands are sequentially provided with a tray and an anchor.
The utility model has the technical effects that:
According to the friction type sliding section structure, the friction type sliding section structure is simplified by taking the resistance-increasing taper pipe as a sliding way of the friction type sliding structure; the manufacturing process is simple, the use is convenient, the price is low, and the method is more beneficial to popularization and application in actual engineering.
The utility model provides high anchoring force through the hollow expansion anchoring cartridge, and better exerts the supporting and bearing capacity of the anchor cable;
The utility model takes the sliding explosive as the friction body and acts together with the resistance-increasing taper pipe, greatly improves the large deformation capacity and the large sliding resistance of the anchor cable, simultaneously adopts the hollow expansion explosive to expand and harden the anchoring explosive and the sliding explosive under the conditions of water or humidity and the like by arranging the water absorption holes on the anchoring explosive and the sliding explosive, thereby avoiding the problem of sliding failure caused by aging, corrosion and the like of the friction body.
The utility model meets the engineering geological disaster prevention and control requirements of large deformation, rock burst and the like of the rock mass.
Drawings
FIG. 1A shows the increase in resistance of the present utility model a deformation energy-absorbing anchor cable schematic diagram;
FIG. 2 is a schematic illustration of the structure of a hollow expanded cartridge used for anchoring and slipping the cartridge;
FIG. 3 is a schematic diagram of the structure of the resistance-increasing taper pipe;
1-chemical anchor head; 2-anchoring the cartridge; 3-slipping the cartridge; 4-resistance-increasing taper pipe; 5-extruding the anchor; 6-limiting rubber plugs; 7-steel strand wires; 8-a tray; 9-an anchor; 10-a circular ring-shaped sealing cover; 11-water permeable holes; 12-expanding an anchoring agent; 13-a water-absorbing sponge coating layer; 14-a hollow cartridge cylinder;
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples.
As shown in fig. 1 to 3, the resistance-increasing large-deformation energy-absorbing anchor cable comprises a steel strand 7, wherein the steel strand 7 is arranged in a drill hole, a chemical anchor head 1, a sliding section, an anchoring section and a limiting rubber plug 6 are sequentially arranged at the drill hole insertion end of the steel strand 7, a tray 8 and an anchorage 9 are sequentially arranged at the exposed end of the steel strand 7, the tray 8 is tightly pressed against surrounding rock to bear surrounding pressure, and force is transmitted to the steel strand 7 through the anchorage 9, so that the anchor cable plays an anchoring role; the utility model provides initial anchoring force through the chemical anchor head, realizes high anchoring force output by the anchor cable through the combined action of the anchoring section and the sliding section, greatly improves the deformability at the same time, meets the prevention and control requirements of disasters such as large deformation of rock mass, rock burst and the like, has the characteristics of simple manufacture, convenient use and low cost, and is more beneficial to popularization and application in actual engineering;
The chemical anchor head 1 comprises a quick resin cartridge or a quick setting cement cartridge for providing an initial anchoring force;
the sliding section comprises an extrusion anchor 5, and the extrusion anchor 5 is sequentially connected with the sliding explosive roll 3 and the resistance-increasing taper pipe 4;
The resistance-increasing taper pipe 4 is a seamless taper pipe, the small-diameter end of the resistance-increasing taper pipe 4 is in butt joint with the anchoring section, and the large-diameter end of the resistance-increasing taper pipe 4 is in butt joint with the sliding explosive roll 3; the inner hole of the resistance-increasing taper pipe 4 is a taper hole and is used for being sleeved on the insertion end of the steel strand 7; the inner diameter of the large-diameter end pipe orifice of the resistance-increasing taper pipe 4 is larger than the outer diameter of the sliding explosive roll 3, and the outer diameter of the small-diameter end pipe orifice of the resistance-increasing taper pipe 4 is smaller than the outer diameter of the anchoring explosive roll 2.
The anchoring sections are anchoring explosive rolls 2, in this embodiment, three anchoring explosive rolls 2 are provided, and in the anchoring process of the anchoring sections, the anchoring force is from two parts of friction resistance between the anchoring explosive rolls 2 and the wall of a drilling hole and friction resistance between the steel stranded wires 7 and the anchoring explosive rolls 2.
The limiting rubber plug 6 is used for limiting the position of the anchoring cartridge 2 in the drill hole and preventing the anchoring cartridge 2 from sliding off from the drill hole.
The extrusion anchor 5 comprises an extrusion sleeve and a steel wire bushing, wherein the steel wire bushing and the extrusion sleeve are sequentially arranged at the insertion end of a steel strand, specifically, the steel wire bushing is tightly screwed on the steel strand firstly to play a role in enhancing the holding power of the extrusion sleeve, and then the extrusion sleeve is fixed on the steel wire bushing by using an extruder. When the rock mass is subjected to external load, disturbance or rock mass deformation, the anchor cable is subjected to pressure from the rock mass so as to act on the extrusion anchor 5 fixed on the steel strand 7, the sliding explosive cartridge 3 passes through the resistance-increasing taper pipe 4 under the driving action of the extrusion anchor 5, and the resistance-increasing taper pipe 4 continuously provides resistance through mechanical deformation, so that the resistance-increasing energy-absorbing purpose is achieved.
The anchoring explosive roll 2 and the sliding explosive roll 3 are hollow expansion explosive rolls. The hollow expansion cartridge comprises a hollow cartridge cylinder 14, wherein the hollow cartridge cylinder 14 adopts a double-layer structure with one end open and one end closed, an expansion anchoring agent 12 is filled in a cavity of the hollow cartridge cylinder 14, and a circular sealing cover 10 is arranged at an annular opening of the hollow cartridge cylinder 14 and used for sealing the expansion anchoring agent 12; a plurality of water permeable holes 11 are uniformly formed in the outer wall of the hollow cartridge cylinder 14; the outer surface of the hollow cartridge cylinder 14 is stuck with a water-absorbing sponge coating layer 13.
The friction force between the anchoring explosive roll 2 and the inner wall of the drill hole is marked as F 1, the friction force between the anchoring explosive roll 2 and the steel strand 7 is marked as F 2, the resistance of the sliding explosive roll 3 when acting on the resistance-increasing taper pipe 4 to deform the resistance-increasing taper pipe 4 is marked as F 3, the ultimate drawing strength of the steel strand 7 is marked as F 4, and F1＞F2,F1＞F3,F1＞F4;F4≥F3>F2.
In this embodiment, the anchor 9 is formed by combining three parts of an anchor ring, an anchor clamping piece and a bead ring. Wherein the shape of the anchor ring adopts a cylindrical design, and the inner hole is in a conical design; the inner surface of the anchor clamping piece is provided with screw thread teeth, the outer surface of the anchor clamping piece is conical, a steel wire ring is arranged in a groove at the top of the anchor clamping piece, the constraint function is achieved, the inner hole conical surface of the anchor ring is matched with the outer surface of the anchor clamping piece, and the anchor clamping piece is provided with three or four pieces. When the installation and the tensioning are completed, the anchorage clamping piece follows the steel strand 7, and the anchorage clamping piece is wedged between the steel strand 7 and the anchorage ring, so that the anchorage cable is completed.
In the embodiment, the diameter of the steel strand 7 is 15.2mm, and the length of the steel strand 7 is 4000mm; the tray 8 is made of steel plates and is square in shape, the side length of the tray 8 is 200mm, the thickness of the tray 8 is 5mm, and the diameter of a central round hole of the tray 8 is 20mm.
In this embodiment, the chemical anchoring head 1 provides an initial anchoring force of 3-5 tons at the initial stage of supporting.
In the embodiment, the outer diameter of the hollow medicine roll 14 is 40mm, the inner diameter of the hollow medicine roll 14 is 18mm, the length of the hollow medicine roll 14 is 150mm, the wall thickness of the inner layer wall and the outer layer wall of the hollow medicine roll 14 is 0.5mm, and the wall thickness of the closed end of the hollow medicine roll cylinder 13 is 3mm; the outer diameter of the circular sealing cover 10 is smaller than the inner diameter of the outer layer cylinder wall of the hollow medicine cylinder 14 by 1mm, the inner diameter of the circular sealing cover 10 is larger than the outer diameter of the inner layer cylinder wall of the hollow medicine cylinder 14 by 1mm, and the thickness of the circular sealing cover 10 is 5mm; the expansion anchor 12 is prepared by mixing 80% of calcium oxide, 5% of water absorbent and 15% of cementing material, and the filling density of the expansion anchor 12 in the annular space of the hollow medicine drum 14 is 1.5g/cm3.
In this embodiment, the water permeable hole 11 is a circular hole with a diameter of 2 mm.
In this embodiment, the length of the resistance-increasing taper pipe 4 is 350mm, the wall thickness of the resistance-increasing taper pipe 4 is 1.5mm, the outer diameter of the large-diameter end pipe orifice of the resistance-increasing taper pipe 4 is 41mm, and the outer diameter of the small-diameter end pipe orifice of the resistance-increasing taper pipe 4 is 30mm.
One-time use process of the resistance-increasing large-deformation energy-absorbing anchor cable comprises the following steps:
Step 1, drilling
Drilling a borehole on surrounding rock, wherein the diameter of the borehole is 42mm, the depth of the borehole is 3500mm, the borehole is 500mm smaller than the length of the steel strand 7, and the grown part is convenient to be used as the exposed end of the steel strand 7 for stretching an anchor cable and installing a tray 8 and an anchor 9;
Step 2, anchor cable preparation
Preparing a steel strand 7 with the length of 4000mm, and fixing the extrusion anchor 5 at the position 200-300mm away from the bottom of the hole at the drill hole insertion end of the steel strand 7 by using an extruder in advance;
Step 3, anchor cable installation
Before the anchor cable is installed, a high-pressure air purging method can be adopted to clear holes, after the hole clearing is completed, the chemical anchor head 1 is firstly sent to the bottom of a drill hole, then the steel strand 7 is inserted into the chemical anchor head 1 at the bottom of the drill hole and is rapidly rotated and stirred, the insertion end of the steel strand 7 does not penetrate through the chemical anchor head 1, after the chemical anchor head 1 is solidified, the anchor explosive roll 2 and the sliding explosive roll 3 are placed into water to be soaked for about 10-15 min, when no bubble exists in the explosive roll, the explosive roll is taken out from the water, and then the sliding explosive roll 3, the resistance increasing taper pipe 4, the anchor explosive roll 2 and the limit rubber plug 6 are sequentially installed on the steel strand 7 and are sent to the bottom of the drill hole, so that the sliding explosive roll 3 is butted with the extrusion anchor 5;
Step 4, stretching the anchor cable
Tensioning the anchor cable by an anchor cable tensioning machine after the anchor cable is installed for 8 hours, so that the steel strand 7 is straight and all parts are tightly contacted;
step 5, locking the anchor cable
Penetrating an anchor 9 from the exposed end of the steel strand 7, pressing an anchor clamping piece into an anchor 9 hole, pressing the anchor clamping piece and the anchor 9, reinstalling a jack, starting an oil pump to start tensioning, returning oil after the jack and the anchor 9 are pressed and tensioned to a locking value, and dismantling the jack; after the anchorage 9 is locked, the redundant steel strand 7 is cut off by using a handheld angle grinder, and the length of the outside is 200mm.
Claims (10)
1. An energy-absorbing anchor cable with resistance-increasing and deformation-increasing functions, which is characterized by comprising
The steel strand is arranged in the drilling hole, and a chemical anchor head, a sliding section, an anchoring section and a limiting rubber plug are sequentially arranged at the drilling hole insertion end of the steel strand; the anchoring section consists of a plurality of anchoring cartridges;
The sliding section comprises an extrusion anchor which is sequentially connected with the sliding explosive roll and the resistance-increasing taper pipe;
The resistance-increasing taper pipe adopts a seamless taper pipe, the small-diameter end of the resistance-increasing taper pipe is in butt joint with the anchoring section, and the large-diameter end of the resistance-increasing taper pipe is in butt joint with the sliding explosive roll; the inner hole of the resistance-increasing taper pipe is a taper hole and is used for being sleeved on the insertion end of the steel strand.
2. The resistance-increasing deformation energy-absorbing anchor cable of claim 1, wherein: the chemical anchor head comprises a quick resin cartridge or a quick setting cement cartridge.
3. The resistance-increasing deformation energy-absorbing anchor cable of claim 1, wherein: the extrusion anchor consists of an extrusion sleeve and a steel wire bushing.
4. The resistance-increasing deformation energy-absorbing anchor cable of claim 1, wherein: the anchoring explosive roll and the sliding explosive roll are hollow expansion explosive rolls.
5. The resistance-increasing deformation energy-absorbing anchor cable of claim 4, wherein: the hollow expansion cartridge comprises a hollow cartridge cylinder, wherein the hollow cartridge cylinder adopts a double-layer structure with one end open and one end closed, an expansion anchoring agent is filled in a cavity of the hollow cartridge cylinder, and a circular sealing cover is arranged at an annular opening of the hollow cartridge cylinder and used for sealing the expansion anchoring agent.
6. The resistance-increasing deformation energy-absorbing anchor cable of claim 5, wherein: and a plurality of water permeable holes are uniformly formed in the outer wall of the hollow cartridge cylinder.
7. The resistance-increasing deformation energy-absorbing anchor cable of claim 5, wherein: the outer surface of the hollow cartridge cylinder is stuck with a water-absorbing sponge coating layer.
8. The resistance-increasing deformation energy-absorbing anchor cable of claim 1, wherein: the inner diameter of the orifice of the large-diameter end of the resistance-increasing taper pipe is larger than the outer diameter of the sliding explosive roll, and the outer diameter of the orifice of the small-diameter end of the resistance-increasing taper pipe is smaller than the outer diameter of the anchoring explosive roll.
9. The resistance-increasing deformation energy-absorbing anchor cable of claim 1, wherein: the friction force between the anchoring explosive roll and the inner wall of the drill hole is marked as F 1, the friction force between the anchoring explosive roll and the steel strand is marked as F 2, the resistance of the sliding explosive roll when acting on the resistance-increasing taper pipe to deform the resistance-increasing taper pipe is marked as F 3, the ultimate drawing strength of the steel strand is marked as F 4, and F1＞F2,F1＞F3,F1＞F4;F4≥F3>F2.
10. The resistance-increasing deformation energy-absorbing anchor cable of claim 1, wherein: the exposed ends of the steel strands are sequentially provided with a tray and an anchor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420034732.1U CN221610010U (en) | 2024-01-08 | 2024-01-08 | Resistance-increasing large-deformation energy-absorbing anchor cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420034732.1U CN221610010U (en) | 2024-01-08 | 2024-01-08 | Resistance-increasing large-deformation energy-absorbing anchor cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221610010U true CN221610010U (en) | 2024-08-27 |
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ID=92426430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420034732.1U Active CN221610010U (en) | 2024-01-08 | 2024-01-08 | Resistance-increasing large-deformation energy-absorbing anchor cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221610010U (en) |
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2024
- 2024-01-08 CN CN202420034732.1U patent/CN221610010U/en active Active
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