CN113847075B - Self-tapping type abdicating anchor rod for controlling large deformation of soft rock - Google Patents
Self-tapping type abdicating anchor rod for controlling large deformation of soft rock Download PDFInfo
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- CN113847075B CN113847075B CN202111187380.0A CN202111187380A CN113847075B CN 113847075 B CN113847075 B CN 113847075B CN 202111187380 A CN202111187380 A CN 202111187380A CN 113847075 B CN113847075 B CN 113847075B
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- self
- tapping
- tray
- lock nut
- rock
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- 238000010079 rubber tapping Methods 0.000 title claims abstract description 48
- 239000011435 rock Substances 0.000 title claims abstract description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000004873 anchoring Methods 0.000 claims abstract description 9
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 238000005260 corrosion Methods 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 206010035148 Plague Diseases 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- 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
- E21D21/0093—Accessories
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a self-tapping yielding anchor rod for controlling large deformation of soft rock, which comprises the following components: lock nut, iron sheet, rubber washer, let spacing component, gasket, tray, self-tapping screw thread body of rod, high strength self-tapping drill bit and self-tapping. The invention has larger limit distance and can release larger deformation energy of surrounding rock; the self-tapping threaded anchor rod is utilized to tap surrounding rock, so that the anchoring force can be greatly improved, the anchor rod can be effectively prevented from falling off, and the anchoring effect is improved; the surrounding rock is slightly disturbed in the process of screwing the self-tapping screw thread into the surrounding rock, so that the surrounding rock has good integrity; auxiliary holes are excavated in advance around the rock mass, and pre-reinforcement treatment of water drainage and grouting is carried out, so that the stability of the rock mass can be improved; the construction method has the advantages of simple structure, low production cost, simple construction procedure, wide application range of the site and common construction equipment.
Description
Technical Field
The invention relates to the technical field of rock-soil anchoring and engineering support, in particular to a self-tapping yielding anchor rod for controlling large deformation of soft rock.
Background
The problem of controlling the large deformation of the soft rock is a worldwide problem in engineering, and in the engineering construction process, the construction problem accompanied by the soft rock is taken as a typical engineering problem to always plague engineering construction and operation. Aiming at soft rock tunnel engineering, because the soft rock tunnel engineering has large buried depth, long hole path and complex groundwater geological conditions, a series of special geological disaster problems can be accompanied in the construction process, life and property safety and construction progress of people are threatened, such as large deformation problem of the soft rock tunnel in the excavation process, the soft rock is large in deformation, high in deformation rate, slow in convergence, large in damage range and quick in pressure, if the support is not timely or improper, the collapse accident of the cavern is easy to occur, such as early secondary support time, surrounding rock strain energy is not released, the requirement on the support structure is high, such as too late secondary support time, and the cavern is excessively deformed, so that the normal use of the soft rock tunnel is influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing the self-tapping yielding anchor rod for controlling the large deformation of soft rock, which can exert the deformation yielding effect, improve the anchoring force and improve the yielding limit distance.
In order to solve the technical problems, the invention provides a self-tapping yielding anchor rod for controlling large deformation of soft rock, which comprises the following components: the self-tapping device comprises a lock nut 1, an iron sheet 2, a rubber washer 3, a limiting member 4, a gasket 5, a tray 6, a self-tapping threaded rod body 9, a high-strength self-tapping drill bit 10 and a self-tapping 11; the upper part of the self-tapping threaded rod body 9 is sequentially connected with a lock nut 1, a limiting member 4 and a tray 6 from top to bottom, the anchoring section at the bottom is a high-strength self-tapping drill bit 10 subjected to quenching treatment, the surface of the high-strength self-tapping drill bit 10 is provided with a self-tapping 11, an iron sheet 2 is arranged between the lock nut 1 and the limiting member 4 through a rubber gasket 3, and a rubber gasket 5 is arranged between the limiting member 4 and the tray 6.
Preferably, the limiting component 4 comprises a sleeve 4-3, a limiter 4-1 and a abdicator 4-2 which are arranged in the sleeve 4-3, wherein the limiter 4-1 is arranged on one side close to the lock nut 1, the abdicator 4-2 is arranged on one side of the tray 6, and the two components are connected in an embedded mode.
Preferably, the two mutually perpendicular directions on the surface of the limiter 4-1 are provided with oblong limiting holes 4-1a, one side of the limiting component, which is close to the locking device 1, is provided with a reinforced end 4-1c which is subjected to quenching treatment, and one end, which is close to the abder 4-2, is provided with a clamping groove 4-1b.
Preferably, the top of the abdicator 4-2 is provided with a protruding cross block 4-2a which is matched with the clamping groove 4-1b of the limiter 4-1, and an inclined surface groove 4-2b is arranged between the two protruding cross blocks 4-2a and is made of high-strength steel.
Preferably, the tray 6 is a high-strength bowl-shaped tray, round holes 7 are formed at four corners, and the round holes 7 are distributed at the four corners of the tray 6 according to a square shape.
Preferably, the drainage grouting pipe 8 is placed into the auxiliary hole pre-dug in advance through the circular holes 7 arranged at four corners of the tray 6.
Preferably, the high strength self-tapping drill 10 is heated to 890-910 degrees celsius and held for a period of time, and then heat treated by a rapid cooling process immersed in mineral oil to increase the hardness and wear resistance of the drill.
Preferably, the self-tapping screw rod body 9 is covered with an anti-corrosion treatment layer, and the anti-corrosion treatment layer is an oil-resistant antistatic coating layer and an epoxy resin protective layer.
The beneficial effects of the invention are as follows: (1) The limiting distance is larger, and the larger deformation energy of surrounding rock can be released; (2) The self-tapping threaded anchor rod is utilized to tap surrounding rock, so that the anchoring force can be greatly improved, the anchor rod can be effectively prevented from falling off, and the anchoring effect is improved; (3) The surrounding rock is slightly disturbed in the process of screwing the self-tapping screw thread into the surrounding rock, so that the surrounding rock has good integrity; (4) Auxiliary holes are excavated in advance around the rock mass, and pre-reinforcement treatment of water drainage and grouting is carried out, so that the stability of the rock mass can be improved; (5) The construction method has the advantages of simple structure, low production cost, simple construction procedure, wide application range of the site and common construction equipment.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic plan view of the tray structure of the present invention.
Fig. 3 is a schematic structural view of a stopper for a limiting member according to the present invention.
Fig. 4 is a cross-sectional view of a stop member stop according to the present invention.
FIG. 5 is a schematic diagram of a limiting member abder according to the present invention.
FIG. 6 is a cross-sectional view of a stop member yield device according to the present invention.
Fig. 7 is a schematic structural view of the sleeve of the present invention.
Wherein, 1, locking the nut; 2. iron sheet; 3. a rubber gasket; 4. let the spacing component; 5. a gasket; 6. a tray; 7. a circular hole; 8. a drainage grouting pipe; 9. a self-tapping threaded rod body; 10. high-strength self-tapping drill bit; 11. self-tapping; 4-1, a limiter; 4-1a, oblong limiting holes; 4-1b, a clamping groove; 4-1c, reinforcing the end socket; 4-2, a abdicator; 4-2a, raised cross blocks; 4-2b, bevel grooves; 4-3, sleeve; 6-1, bottom boundary; 6-2, top boundary.
Detailed Description
As shown in fig. 1-2, a self-tapping yielding anchor for controlling large deformation of soft rock, comprising: the self-tapping device comprises a lock nut 1, an iron sheet 2, a rubber washer 3, a limiting member 4, a gasket 5, a tray 6, a self-tapping threaded rod body 9, a high-strength self-tapping drill bit 10 and a self-tapping 11; the upper part of the self-tapping threaded rod body 9 is sequentially connected with a lock nut 1, a limiting member 4 and a tray 6 from top to bottom, the anchoring section at the bottom is a high-strength self-tapping drill bit 10 subjected to quenching treatment, the surface of the high-strength self-tapping drill bit 10 is provided with a self-tapping 11, an iron sheet 2 is arranged between the lock nut 1 and the limiting member 4 through a rubber gasket 3, and a rubber gasket 5 is arranged between the limiting member 4 and the tray 6. The tray 6 is a high-strength bowl-shaped tray, round holes 7 are formed in four corners, and the round holes 7 are distributed in the four corners of the tray 6 according to a square shape. The high strength self-tapping drill 10 is heated to 890-910 degrees celsius and held for a period of time, and then heat treated by a rapid cooling process immersed in mineral oil to increase the hardness and wear resistance of the drill. The self-tapping threaded rod body 9 is covered with an anti-corrosion treatment layer, and the anti-corrosion treatment layer is an oil-resistant antistatic coating layer and an epoxy resin protective layer.
As shown in fig. 3-7, the limiting component 4 comprises a sleeve 4-3, a limiter 4-1 and a abdicator 4-2, wherein the limiter 4-1 is arranged in the sleeve 4-3, the abdicator 4-2 is arranged on one side close to the locking nut 1, the abdicator 4-2 is arranged on one side of the tray 6, and the two components are connected in an embedded mode. The surface of the limiter 4-1 is provided with oblong limiting holes 4-1a in two mutually perpendicular directions, a quenched strengthening end 4-1c is arranged on one side of the limiting component close to the locking device 1, and a clamping groove 4-1b is arranged at one end close to the abder 4-2. The top of the abdicator 4-2 is provided with a protruding cross block 4-2a which is matched with a clamping groove 4-1b of the limiter 4-1, and an inclined surface groove 4-2b is arranged between the two protruding cross blocks 4-2a and is made of high-strength steel.
Claims (2)
1. A self-tapping yielding anchor for controlling large deformation of soft rock, comprising: the self-tapping device comprises a lock nut (1), an iron sheet (2), a rubber gasket (3), a limiting member (4), a gasket (5), a tray (6), a self-tapping thread rod body (9), a high-strength self-tapping drill bit (10) and a self-tapping drill bit (11); the upper part of the self-tapping threaded rod body (9) is sequentially connected with a lock nut (1), a limiting member (4) and a tray (6) from top to bottom, the anchoring section at the bottom is a high-strength self-tapping drill bit (10) subjected to quenching treatment, the surface of the high-strength self-tapping drill bit (10) is provided with a self-tapping (11), an iron sheet (2) is arranged between the lock nut (1) and the limiting member (4) through a rubber gasket (3), and the rubber gasket (3) is arranged between the limiting member (4) and the tray (6);
the limiting component (4) comprises a sleeve (4-3), a limiter (4-1) and a abdicator (4-2) which are arranged in the sleeve (4-3), wherein the limiter (4-1) is arranged at one side close to the lock nut (1), the abdicator (4-2) is arranged at one side of the tray (6), and the two components are embedded and connected;
the surface of the limiter (4-1) is provided with oblong limiting holes (4-1 a) in two mutually perpendicular directions, one side of the limiting component, which is close to the lock nut (1), is provided with a reinforced end (4-1 c) subjected to quenching treatment, and one end, which is close to the abder (4-2), is provided with a clamping groove (4-1 b);
the top of the abdicator (4-2) is provided with a protruding cross block (4-2 a) which is matched with a clamping groove (4-1 b) of the limiter (4-1), and an inclined surface groove (4-2 b) is arranged between the two protruding cross blocks (4-2 a) and is made of high-strength steel;
the tray (6) is a high-strength bowl-shaped tray, round holes (7) are formed in four corners, and the round holes (7) are distributed in the four corners of the tray (6) according to a square shape;
the drainage grouting pipe (8) passes through round holes (7) arranged at four corners of the tray (6) and is put into auxiliary holes pre-dug in advance.
2. A self-tapping yielding bolt for controlling large deformation of soft rock according to claim 1, characterized in that the self-tapping threaded bolt body (9) is covered with an anti-corrosion treatment layer, the anti-corrosion treatment layer is an oil-resistant antistatic coating layer and an epoxy resin protective layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111187380.0A CN113847075B (en) | 2021-10-12 | 2021-10-12 | Self-tapping type abdicating anchor rod for controlling large deformation of soft rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111187380.0A CN113847075B (en) | 2021-10-12 | 2021-10-12 | Self-tapping type abdicating anchor rod for controlling large deformation of soft rock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113847075A CN113847075A (en) | 2021-12-28 |
| CN113847075B true CN113847075B (en) | 2023-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111187380.0A Active CN113847075B (en) | 2021-10-12 | 2021-10-12 | Self-tapping type abdicating anchor rod for controlling large deformation of soft rock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113847075B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201103397Y (en) * | 2007-11-06 | 2008-08-20 | 中国矿业大学 | Yielding deformed steel bar slip-casting anchor bar |
| CA2889347A1 (en) * | 2007-02-28 | 2008-08-28 | Peter H. Craig | Improved cable bolt |
| CN102953743A (en) * | 2012-09-02 | 2013-03-06 | 山东科技大学 | Intelligent control resistance increasing large-deformation anchor rod and application method thereof |
| CN204257865U (en) * | 2014-11-11 | 2015-04-08 | 河南天海电器有限公司 | Connector locking device |
| CN205189914U (en) * | 2015-12-02 | 2016-04-27 | 中国矿业大学(北京) | Friction formula lets presses anchor bolt support device |
| CN109555502A (en) * | 2018-11-13 | 2019-04-02 | 山西潞安环保能源开发股份有限公司常村煤矿 | A kind of antireflective type approval test method of high methane coal road presplitting |
| CN210033494U (en) * | 2019-05-17 | 2020-02-07 | 东北大学 | Self-expansion type pipe seam anchor rod for large deformation of surrounding rock |
| CN211258669U (en) * | 2019-11-26 | 2020-08-14 | 山东科技大学 | Anchor rod with resistance-increasing large-deformation yielding function |
| CN111706374A (en) * | 2020-06-30 | 2020-09-25 | 河海大学 | Anchor head expansion resistance-increasing type drainable multistage yielding anchor rod |
| CN111764943A (en) * | 2020-07-08 | 2020-10-13 | 中国电建集团昆明勘测设计研究院有限公司 | Drainable self-drilling grading yielding anchor rod and supporting method thereof |
-
2021
- 2021-10-12 CN CN202111187380.0A patent/CN113847075B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2889347A1 (en) * | 2007-02-28 | 2008-08-28 | Peter H. Craig | Improved cable bolt |
| CN201103397Y (en) * | 2007-11-06 | 2008-08-20 | 中国矿业大学 | Yielding deformed steel bar slip-casting anchor bar |
| CN102953743A (en) * | 2012-09-02 | 2013-03-06 | 山东科技大学 | Intelligent control resistance increasing large-deformation anchor rod and application method thereof |
| CN204257865U (en) * | 2014-11-11 | 2015-04-08 | 河南天海电器有限公司 | Connector locking device |
| CN205189914U (en) * | 2015-12-02 | 2016-04-27 | 中国矿业大学(北京) | Friction formula lets presses anchor bolt support device |
| CN109555502A (en) * | 2018-11-13 | 2019-04-02 | 山西潞安环保能源开发股份有限公司常村煤矿 | A kind of antireflective type approval test method of high methane coal road presplitting |
| CN210033494U (en) * | 2019-05-17 | 2020-02-07 | 东北大学 | Self-expansion type pipe seam anchor rod for large deformation of surrounding rock |
| CN211258669U (en) * | 2019-11-26 | 2020-08-14 | 山东科技大学 | Anchor rod with resistance-increasing large-deformation yielding function |
| CN111706374A (en) * | 2020-06-30 | 2020-09-25 | 河海大学 | Anchor head expansion resistance-increasing type drainable multistage yielding anchor rod |
| CN111764943A (en) * | 2020-07-08 | 2020-10-13 | 中国电建集团昆明勘测设计研究院有限公司 | Drainable self-drilling grading yielding anchor rod and supporting method thereof |
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| Publication number | Publication date |
|---|---|
| CN113847075A (en) | 2021-12-28 |
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