CN219694793U - Anchor rope anchor body drop hammer impact experimental device - Google Patents
Anchor rope anchor body drop hammer impact experimental device Download PDFInfo
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- CN219694793U CN219694793U CN202320163926.7U CN202320163926U CN219694793U CN 219694793 U CN219694793 U CN 219694793U CN 202320163926 U CN202320163926 U CN 202320163926U CN 219694793 U CN219694793 U CN 219694793U
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- drop hammer
- anchor
- anchor cable
- outer diameter
- anchoring
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- 238000004873 anchoring Methods 0.000 claims abstract description 61
- 239000011435 rock Substances 0.000 claims abstract description 48
- 238000012360 testing method Methods 0.000 claims abstract description 37
- 238000006073 displacement reaction Methods 0.000 claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 238000003466 welding Methods 0.000 claims abstract description 8
- 239000007769 metal material Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 7
- 239000004568 cement Substances 0.000 claims description 6
- 239000011083 cement mortar Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 2
- 238000009863 impact test Methods 0.000 claims 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 2
- 235000017491 Bambusa tulda Nutrition 0.000 claims 2
- 241001330002 Bambuseae Species 0.000 claims 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 2
- 239000011425 bamboo Substances 0.000 claims 2
- 238000000034 method Methods 0.000 description 6
- 230000002787 reinforcement Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Abstract
The utility model relates to an anchor rope anchoring body drop hammer impact experimental device, and belongs to the technical field of roadway support. The anchor rope anchoring body drop hammer impact experimental device specifically comprises: the device comprises a top beam, an annular drop hammer, an upright post, an anchoring barrel, an anchoring agent, an anchor rope, a surrounding pressure barrel, a surrounding rock test piece, a tray, a pressure box, a nut, a laser range finder, a displacement sensor and a base. The top beam and the upright post are connected in a welding mode; the upright posts are connected with the base in a welding mode; the laser range finder, the displacement sensor and the base are placed on the ground with the same elevation. The length of the top beam is larger than the outer diameter of the annular drop hammer; the top beam and the annular drop hammer are made of metal materials; the inner diameter of the annular drop hammer is larger than the outer diameter of the anchoring barrel. The anchor rope anchoring body drop hammer impact experimental device can reveal deformation damage characteristics of the anchor rope and surrounding rock after impact, and reveal anchoring performance of the anchor rope anchoring body after impact of a dynamic load.
Description
Technical Field
The utility model belongs to the technical field of roadway support, and particularly relates to an anchor cable anchoring body drop hammer impact experimental device.
Background
The anchor cable support is a common surrounding rock reinforcement means in the technical field of roadway support, and has the advantages of high support resistance, high bearing performance and the like compared with the anchor cable support. Therefore, the anchor cable support has very wide application in the fields of roadway surrounding rock reinforcement, tunnel surrounding rock reinforcement, slope reinforcement and the like.
With the increasing depth of the underground engineering, the stress of the coal rock mass around the underground engineering is continuously increased, so that the possibility of damaging the coal rock mass around the underground engineering is obviously improved. In order to maintain the stability of the coal rock mass surrounding the underground works, anchor cable supports are often used in the reinforcement of deep surrounding rocks. However, under high stress, the anchor cable support is likely to be impacted by dynamic loads. At present, few experimental devices are available for the dynamic load impact of the cable anchorage. Therefore, the design of the experimental device capable of detecting the anchoring performance of the anchor rope anchoring body under the action of dynamic load impact has important significance for revealing the anchoring mechanism of the anchor rope anchoring body and popularizing the anchor rope support.
Disclosure of Invention
The utility model aims to provide an experimental device capable of detecting the anchoring performance of an anchor rope anchoring body under the action of dynamic load impact, which overcomes the defect that the existing experimental device can only be used for testing the anchoring performance of the anchor rope anchoring body under the action of static load.
The utility model adopts the following technical scheme to provide an anchor rope anchoring body drop hammer impact experimental device, which comprises: the device comprises a top beam, an annular drop hammer, an upright post, an anchoring barrel, an anchoring agent, an anchor rope, a surrounding pressure barrel, a surrounding rock test piece, a tray, a pressure box, a nut, a laser range finder, a displacement sensor and a base; the top beam and the upright post are connected in a welding mode; the upright posts are connected with the base in a welding mode; the laser range finder, the displacement sensor and the base are placed on the ground with the same elevation.
As a further description of the above technical solution:
the length of the top beam is larger than the outer diameter of the annular drop hammer; the top beam and the annular drop hammer are made of metal materials; the inner diameter of the annular drop hammer is larger than the outer diameter of the anchoring barrel.
As a further description of the above technical solution:
the height of the upright post is greater than the length of the anchor cable.
As a further description of the above technical solution:
the anchoring agent is cement mortar anchoring agent, wherein the mass ratio of water to cement is between 0.4:1 and 0.5:1; the mass ratio of cement to sand is between 1:0.5 and 1:1.
As a further description of the above technical solution:
the inner diameter of the anchoring cylinder is larger than the outer diameter of the anchor cable, and the difference between the inner diameter of the anchoring cylinder and the outer diameter of the anchor cable is between 10mm and 20 mm.
As a further description of the above technical solution:
the surrounding rock test piece is in a hollow cylinder shape, the inner diameter of the surrounding rock test piece is larger than the outer diameter of the anchor cable, and the outer diameter of the surrounding rock test piece is smaller than 300mm.
As a further description of the above technical solution:
the tray is of a circular structure, and the outer diameter of the tray is larger than that of the anchoring barrel; the outer diameter of the pressure box is smaller than the outer diameter of the tray.
As a further description of the above technical solution:
the inner diameter of the confining pressure cylinder is larger than the outer diameter of the anchor cable; the material of the confining pressure cylinder 7 can be plastic or metal.
As a further description of the above technical solution:
the surrounding rock test piece is an artificial rock sample for concrete casting, and the uniaxial compressive strength of a concrete material of the surrounding rock test piece is more than or equal to 10MPa.
As a further description of the above technical solution:
the top end of the extending section of the displacement sensor is contacted with the bottom end of the anchor cable, and when the anchor cable moves downwards after being impacted, the extending section of the displacement sensor is pressed to retract, so that the elongation of the anchor cable can be recorded.
As a further description of the above technical solution:
the laser range finder emits upward laser to irradiate the surrounding rock test piece, and can measure downward deformation of the surrounding rock test piece after being impacted.
In summary, the utility model provides an anchor cable anchoring body drop hammer impact experimental device, which has the advantages that: the test method can be used for testing the anchoring performance of the anchor rope anchoring body under the action of dynamic load impact, and the mechanical behavior characteristics of the anchor rope anchoring body formed by the anchor rope, the anchoring agent and the surrounding rock under the dynamic load impact environment can be studied.
Due to the adoption of the technical scheme, the utility model has the beneficial effects that: the method can be used for researching the bearing performance of the anchor rope anchoring body under the dynamic load impact environment, so that the influence of different factors on the mechanical behavior of the anchor rope anchoring body under the dynamic load impact environment can be revealed. In addition, the deformation of the anchor cable and the surrounding rock test piece in the anchor cable anchoring body after being impacted by the dynamic load can be respectively observed by the method, so that the deformation and damage characteristics of the anchor cable and the surrounding rock after being impacted can be better revealed. The method has the beneficial effects that theoretical basis and foundation can be provided for preventing the failure problem of the anchor cable support in the deep high-stress impact environment.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate and together with the description serve to explain the utility model. In the drawings:
fig. 1 is a schematic diagram of an experimental device for drop hammer impact of an anchor cable anchorage according to the utility model.
Fig. 2 is a schematic view of an anchor cable anchoring body comprising an anchor cable, an anchoring agent and a surrounding rock test piece according to the present utility model.
Fig. 3 is a schematic view of the cable bolt of the present utility model in combination with an anchor cylinder.
Fig. 4 is a schematic view of the combination of the tray 9, the pressure case 10 and the nut 11 according to the present utility model.
Legend description: 1. a top beam; 2. an annular drop hammer; 3. a column; 4. an anchor cylinder; 5. an anchoring agent; 6. an anchor cable; 7. a confining pressure cylinder; 8. a surrounding rock test piece; 9. a tray; 10. a pressure cell; 11. a nut; 12. a laser range finder; 13. displacement sensor and 14, base.
Detailed Description
As shown in fig. 1, the experimental device capable of testing the anchoring performance of the anchor rope anchoring body under the action of dynamic load impact according to the utility model comprises: the device comprises a top beam 1, an annular drop hammer 2, an upright post 3, an anchor cylinder 4, an anchoring agent 5, an anchor cable 6, a surrounding pressure cylinder 7, a surrounding rock test piece 8, a tray 9, a pressure box 10, a nut 11, a laser range finder 12, a displacement sensor 13 and a base 14; the top beam 1 and the upright post 3 are connected in a welding mode; the upright 3 and the base 14 are connected in a welding mode; the laser range finder 12, the displacement sensor 13 and the base 14 are placed on the ground at the same elevation.
In one embodiment:
the length of the top beam 1 is larger than the outer diameter of the annular drop hammer 2; the top beam 1 and the annular drop hammer 2 are made of metal materials; the inner diameter of the annular drop hammer 2 is larger than the outer diameter of the anchoring cylinder 4.
In one embodiment:
the height of the upright 3 is greater than the length of the anchor cable 6.
In one embodiment:
the anchoring agent 5 is a cement mortar anchoring agent, wherein the mass ratio of water to cement is between 0.4:1 and 0.5:1; the mass ratio of cement to sand is between 1:0.5 and 1:1.
In one embodiment:
the inner diameter of the anchoring cylinder 4 is larger than the outer diameter of the anchor cable 6, and the difference between the inner diameter of the anchoring cylinder 4 and the outer diameter of the anchor cable 6 is between 10mm and 20 mm.
In one embodiment:
the surrounding rock test piece 8 is in a hollow cylinder shape, the inner diameter of the surrounding rock test piece 8 is larger than the outer diameter of the anchor cable 6, and the outer diameter of the surrounding rock test piece 8 is smaller than 300mm.
In one embodiment:
the tray 9 is of a circular structure, and the outer diameter of the tray is larger than that of the anchoring barrel 4; the outer diameter of the pressure cell 10 is smaller than the outer diameter of the tray 9.
In one embodiment:
the inner diameter of the confining pressure cylinder 7 is larger than the outer diameter of the anchor cable 6; the material of the confining pressure cylinder 7 can be plastic or metal.
In one embodiment:
the surrounding rock test piece 8 is an artificial rock sample for concrete casting, and the uniaxial compressive strength of a concrete material is required to be more than or equal to 10MPa.
In one embodiment:
the top end of the extending section of the displacement sensor 13 is contacted with the bottom end of the anchor cable 6, and when the anchor cable moves downwards after being impacted, the extending section of the displacement sensor 13 is pressed to retract, so that the elongation of the anchor cable 6 can be recorded.
In one embodiment:
the laser ranging instrument 12 emits upward laser light to the surrounding rock specimen 8, and measures downward deformation of the surrounding rock specimen 8 after being impacted.
When the anchor cable 6 is specifically used, the surrounding rock test piece 8 is firstly cast by using a concrete material, and then the anchor cable 6 is inserted into a drilling hole in the center of the surrounding rock test piece 8. The anchor lines 6 are then bonded to the surrounding rock test pieces 8 using the anchoring agent 5. Then, the upper end of the anchor cable 6 is inserted into the anchor cylinder 4 and the anchor cable 6 is bonded to the anchor cylinder 4 using the anchor agent 5. Subsequently, the surrounding pressure cylinder 7 is sleeved on the surrounding rock test piece 8. A tray 9, a pressure box 10 and a nut 11 are sequentially arranged at the bottom end of the anchor cable. The above assembly is then suspended from the header 1. And a displacement sensor 13 is arranged at the bottom end of the anchor cable 6, and a laser range finder 12 is arranged at the bottom end of the surrounding rock test piece 8. After the experiment is started, the hanging ring-shaped drop hammer 2 below the top beam 1 is released, and the annular drop hammer 2 is used for impacting the surrounding rock test piece 8. In the experimental process, the displacement sensor 13 is used for measuring the deformation of the anchor cable 6; measuring the deformation of the surrounding rock test piece 8 by using a laser range finder 12; the pressure box is used for measuring the bearing force of the anchor rope anchoring body, so that the bearing force and the deformation of the anchor rope anchoring body after the impact of the dynamic load can be obtained, and the anchoring performance of the anchor rope anchoring body after the impact of the dynamic load can be analyzed by using the data.
In summary, by means of the technical scheme, the bearing performance of the anchor rope anchoring body under the dynamic load impact environment can be studied, so that the influence of different factors on the mechanical behavior of the anchor rope anchoring body under the dynamic load impact environment can be revealed. In addition, the deformation of the anchor cable and the surrounding rock test piece in the anchor cable anchoring body after being impacted by the dynamic load can be respectively observed by the method, so that the deformation and damage characteristics of the anchor cable and the surrounding rock after being impacted can be better revealed. The method has the beneficial effects that theoretical basis and foundation can be provided for preventing the failure problem of the anchor cable support in the deep high-stress impact environment.
The present utility model is not limited to the above-mentioned preferred embodiments, and any person who can obtain other various products under the teaching of the present utility model can make any changes in shape or structure, and all the technical solutions that are the same or similar to the present utility model fall within the scope of the present utility model.
Claims (11)
1. The utility model provides an anchor rope anchor body drop hammer impact experimental apparatus, includes back timber (1), annular drop hammer (2), stand (3), anchor section of thick bamboo (4), anchoring agent (5), anchor rope (6), confined pressure section of thick bamboo (7), surrounding rock test piece (8), tray (9), pressure cell (10), nut (11), laser range finder (12), displacement sensor (13) and base (14), its characterized in that: the top beam (1) is connected with the upright post (3) in a welding mode; the upright post (3) is connected with the base (14) in a welding mode; the laser range finder (12), the displacement sensor (13) and the base (14) are placed on the ground with the same elevation.
2. The anchor line anchor drop hammer impact test device according to claim 1, characterized in that the length of the top beam (1) is greater than the outer diameter of the annular drop hammer (2); the top beam (1) and the annular drop hammer (2) are made of metal materials; the inner diameter of the annular drop hammer (2) is larger than the outer diameter of the anchoring barrel (4).
3. The anchor line anchor drop hammer test device according to claim 1, characterized in that the height of the upright (3) is greater than the length of the anchor line (6).
4. The anchor cable anchorage drop impact experimental device according to claim 1, wherein the anchorage agent (5) is a cement mortar anchorage agent, wherein the mass ratio of water to cement is between 0.4:1 and 0.5:1; the mass ratio of cement to sand is between 1:0.5 and 1:1.
5. The drop hammer test device according to claim 1, wherein the inner diameter of the anchoring cylinder (4) is larger than the outer diameter of the anchor cable (6), and the difference between the inner diameter of the anchoring cylinder (4) and the outer diameter of the anchor cable (6) is between 10mm and 20 mm.
6. The anchor cable anchoring body drop hammer impact experiment device according to claim 1, wherein the surrounding rock test piece (8) is in a hollow cylinder shape, the inner diameter of the surrounding rock test piece (8) is larger than the outer diameter of the anchor cable (6), and the outer diameter of the surrounding rock test piece (8) is smaller than 300mm.
7. The anchor cable anchorage drop hammer impact test device according to claim 1, wherein the tray (9) is of a circular structure, and the outer diameter of the tray is larger than the outer diameter of the anchorage cylinder (4); the outer diameter of the pressure box (10) is smaller than the outer diameter of the tray (9).
8. The anchor cable anchoring body drop hammer impact test device according to claim 1, wherein the inner diameter of the confining pressure cylinder (7) is larger than the outer diameter of the anchor cable (6); the material of the confining pressure cylinder (7) can be plastic or metal.
9. The drop hammer impact experimental device for the anchor cable anchorage body according to claim 1, wherein the surrounding rock test piece (8) is a concrete poured artificial rock sample, and the uniaxial compressive strength of a concrete material is more than or equal to 10MPa.
10. The drop hammer impact test device for the anchor cable anchoring body according to claim 1, wherein the top end of the extending section of the displacement sensor (13) is contacted with the bottom end of the anchor cable (6), and when the anchor cable moves downwards after being impacted, the extending section of the displacement sensor (13) is pressed to retract, so that the elongation of the anchor cable (6) can be recorded.
11. The anchor cable anchor drop hammer impact test device according to claim 1, wherein the laser range finder (12) emits upward laser to the surrounding rock test piece (8) and measures downward deformation of the surrounding rock test piece (8) after impact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320163926.7U CN219694793U (en) | 2023-02-01 | 2023-02-01 | Anchor rope anchor body drop hammer impact experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320163926.7U CN219694793U (en) | 2023-02-01 | 2023-02-01 | Anchor rope anchor body drop hammer impact experimental device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219694793U true CN219694793U (en) | 2023-09-15 |
Family
ID=87970405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320163926.7U Active CN219694793U (en) | 2023-02-01 | 2023-02-01 | Anchor rope anchor body drop hammer impact experimental device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219694793U (en) |
-
2023
- 2023-02-01 CN CN202320163926.7U patent/CN219694793U/en active Active
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