CN113847074B - Self-tapping type drainage multistage abdication anchor rod for controlling large deformation of soft rock - Google Patents
Self-tapping type drainage multistage abdication anchor rod for controlling large deformation of soft rock Download PDFInfo
- Publication number
- CN113847074B CN113847074B CN202111186362.0A CN202111186362A CN113847074B CN 113847074 B CN113847074 B CN 113847074B CN 202111186362 A CN202111186362 A CN 202111186362A CN 113847074 B CN113847074 B CN 113847074B
- Authority
- CN
- China
- Prior art keywords
- self
- tapping
- rock
- limiter
- surrounding rock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010079 rubber tapping Methods 0.000 title claims abstract description 55
- 239000011435 rock Substances 0.000 title claims abstract description 43
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 238000004873 anchoring Methods 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 7
- 238000005260 corrosion Methods 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000002480 mineral oil Substances 0.000 claims description 3
- 235000010446 mineral oil Nutrition 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 3
- 230000001133 acceleration Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000003313 weakening effect Effects 0.000 abstract description 2
- 238000012856 packing Methods 0.000 abstract 1
- 239000011241 protective layer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 239000002689 soil Substances 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 type drainable multistage abdication anchor rod for controlling large deformation of soft rock, which comprises the following steps: lock nut, iron sheet, rubber packing ring, let spacing component, gasket, tray, self-tapping screw anchor, drainage channel, side direction wash port, forward wash port, high strength self-tapping drill bit and self-tapping. The invention can fully exert the function of displacement in soft rock engineering; the limiting distance is larger, so that larger deformation energy of surrounding rock can be released, and the self-bearing capacity of the surrounding rock is fully exerted; in the process of screwing the self-tapping screw thread into the surrounding rock, a certain extrusion force is given to the surrounding rock, water in the surrounding rock is discharged in an acceleration way through a drainage pipeline of the rod body, the problem of weakening the surrounding rock due to high water content of the rock stratum is solved, and the stability of the rock mass is improved; the self-tapping screw thread is tightly contacted with surrounding rock, so that the anchor rod is prevented from being loosened, and the anchoring effect is good; simple structure, low production cost, simple construction procedure, common construction equipment and wide application range.
Description
Technical Field
The invention relates to the technical field of rock-soil anchoring and engineering support, in particular to a self-tapping type drainage multistage abdication anchor rod for controlling large deformation of soft rock.
Background
With the development of engineering construction, more and more complex engineering geological conditions are faced, construction problems faced by soft rock engineering are taken as typical engineering problems, and solutions are needed to be proposed, and aiming at soft rock tunnel engineering, due to the fact that the embedded depth is large, the hole path is long, the hydrogeological conditions are complex, a series of special geological disaster problems often occur in the construction process, and life and property safety of people and construction progress of engineering are threatened, such as large deformation of the soft rock tunnel, soft rock rheology and karst water burst problems are caused.
The deformation and damage of the soft rock tunnel are remarkable, the stability of the soft rock tunnel can be guaranteed only by adapting to the deformation and damage characteristics of the soft rock tunnel, a plurality of supporting structures fail in the soft rock tunnel, the strength is not insufficient, the flexibility is too low, the supporting structures can not be supported while being allowed, and in general, the supporting structures must have (1) strong flexibility; (2) high scalability; (3) resistance enhancement; (4) supporting and letting; (5) limited scalability; (6) reasonable structural construction; (7) ease of construction; (8) economy.
Disclosure of Invention
The invention aims to solve the technical problem of providing a self-tapping drainage multistage abdication anchor rod for controlling large deformation of soft rock, which can exert the deformation abdication effect, improve the anchoring force, and improve the spacing distance and drainage.
In order to solve the technical problems, the invention provides a self-tapping type drainable multistage abdication anchor rod for controlling large deformation of soft rock, comprising: the self-tapping type 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 type threaded anchor rod 7, a drainage channel 8, a lateral drainage hole 9, a forward drainage hole 10, a high-strength self-tapping drill bit 11 and a self-tapping 12; the upper part of the self-tapping screw bolt 7 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 11 subjected to quenching treatment, self-tapping threads are arranged on the outer surface of the self-tapping screw bolt 7 in a through length mode, lateral drain holes 9 and forward drain holes 10 are arranged on grooves of a thread gap, the lateral drain holes 9 and the forward drain holes 10 are communicated with a drain channel, an iron sheet 2 is arranged between the lock nut 1 and the limiting member 4 through a rubber gasket 3, and a 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, a reinforced end 4-1c which is subjected to quenching treatment is arranged on one side of the limiter close to the lock nut 1 near the limiter 4-1, and a clamping groove 4-1b is arranged at one end which is close to the abder 4-2.
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, high strength self-tapping drill 11 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 surface of the lateral drainage hole 9 and the surface of the forward drainage hole 10 are externally wrapped with water permeable filter cloth.
Preferably, the self-tapping threaded anchor rod 7 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 displacement can be fully exerted in soft rock engineering; (2) The limiting distance is larger, so that larger deformation energy of surrounding rock can be released, and the self-bearing capacity of the surrounding rock is fully exerted; (3) In the process of screwing the self-tapping screw thread into the surrounding rock, a certain extrusion force is given to the surrounding rock, water in the surrounding rock is discharged in an acceleration way through a drainage pipeline of the rod body, the problem of weakening the surrounding rock due to high water content of the rock stratum is solved, and the stability of the rock mass is improved; (4) The self-tapping screw thread is tightly contacted with surrounding rock, so that the anchor rod is prevented from being loosened, and the anchoring effect is good; (5) Simple structure, low production cost, simple construction procedure, common construction equipment and wide application range.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a view showing the arrangement of the water outlet on the anchor rod body of the present invention.
Fig. 3 is a schematic view of a stopper structure of a stopper 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 view of a stop 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. self-tapping threaded anchor rod; 8. a drainage channel; 9. a lateral drain hole; 10. a forward drain hole; 11. high-strength self-tapping drill bit; 12. 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.
Detailed Description
As shown in fig. 1-2, a self-tapping type drainable multi-stage yielding anchor for controlling large deformation of soft rock, comprising: the self-tapping type 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 type threaded anchor rod 7, a drainage channel 8, a lateral drainage hole 9, a forward drainage hole 10, a high-strength self-tapping drill bit 11 and a self-tapping 12; the upper part of the self-tapping screw bolt 7 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 11 subjected to quenching treatment, self-tapping threads are arranged on the outer surface of the self-tapping screw bolt 7 in a through length mode, lateral drain holes 9 and forward drain holes 10 are arranged on grooves of a thread gap, the lateral drain holes 9 and the forward drain holes 10 are communicated with a drain channel, an iron sheet 2 is arranged between the lock nut 1 and the limiting member 4 through a rubber gasket 3, and a gasket 5 is arranged between the limiting member 4 and the tray 6.
The self-tapping threaded anchor rod 7 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 surfaces of the lateral drainage holes 9 and the forward drainage holes 10 are externally wrapped with water permeable filter cloth, so that particles are prevented from blocking the forward drainage holes 10. The high strength self-tapping drill 11 is heated to 890-910 degrees celsius and maintained for a period of time, and then is heat treated by a rapid cooling process immersed in mineral oil to increase the hardness and wear resistance of the drill.
The diameter of the pre-drilled hole is slightly smaller than the diameter of the rod body, in the process that the self-tapping threaded anchor rod 7 attacks the surrounding rock, the self-tapping threads are in close contact with the surrounding rock, and the water in the surrounding rock can be discharged in an accelerating way by combining the positive drainage holes 10 and the drainage pipelines 8 which are arranged in a through length way, so that the purpose of improving the stability of the surrounding rock is achieved.
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, one side of the limiter, close to the lock nut 1, of the limiter 4-1 is provided with a reinforced end 4-1c subjected to quenching treatment, and one end, close to the abdicator 4-2, is provided with a clamping groove 4-1b. 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 (4)
1. A self-tapping, drainable, multi-stage 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 screw bolt (7), a drainage channel (8), a lateral drainage hole (9), a forward drainage hole (10), a high-strength self-tapping drill bit (11) and a self-tapping screw (12); the upper part of the self-tapping type threaded anchor rod (7) 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 (11) subjected to quenching treatment, self-tapping threads are arranged on the outer surface of the self-tapping type threaded anchor rod (7) in a through length mode, a lateral drain hole (9) and a forward drain hole (10) are arranged on a groove of a thread gap, the lateral drain hole (9) and the forward drain hole (10) are communicated with a drain channel, an iron sheet (2) is arranged between the lock nut (1) and the limiting member (4) through a rubber gasket (3), and a gasket (5) 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 limiter, close to the lock nut (1), of the limiter (4-1) is provided with a reinforced end (4-1 c) subjected to quenching treatment, and one end, close to the abdicator (4-2), is provided with a clamping groove (4-1 b);
the top of the abdicating device (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 plane groove (4-2 b) is arranged between the two protruding cross blocks (4-2 a) and is made of high-strength steel.
2. A self-tapping, drainable, multi-stage yielding anchor for controlling large deformation of soft rock according to claim 1, wherein the high strength self-tapping drill (11) 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.
3. A self-tapping drainable multi-stage yielding anchor for controlling large deformation of soft rock according to claim 1, wherein the surface of the lateral drainage hole (9) and the surface of the forward drainage hole (10) are externally wrapped with water permeable filter cloth.
4. The self-tapping type drainable multi-stage yielding anchor for controlling large deformation of soft rock according to claim 1, wherein the self-tapping type threaded anchor (7) 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 protection layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111186362.0A CN113847074B (en) | 2021-10-12 | 2021-10-12 | Self-tapping type drainage multistage abdication anchor rod for controlling large deformation of soft rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111186362.0A CN113847074B (en) | 2021-10-12 | 2021-10-12 | Self-tapping type drainage multistage abdication anchor rod for controlling large deformation of soft rock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113847074A CN113847074A (en) | 2021-12-28 |
| CN113847074B true CN113847074B (en) | 2023-11-10 |
Family
ID=78978120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111186362.0A Active CN113847074B (en) | 2021-10-12 | 2021-10-12 | Self-tapping type drainage multistage abdication anchor rod for controlling large deformation of soft rock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113847074B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939428A (en) * | 2017-12-29 | 2018-04-20 | 中天合创能源有限责任公司 | A kind of cable bolting system with impact resistance |
| CA2994061A1 (en) * | 2016-11-25 | 2018-05-25 | China University Of Mining And Technology | Supporting method of an extensible reaming self-anchoring anchor rod |
| CN111706375A (en) * | 2020-07-09 | 2020-09-25 | 安徽挚乾环保科技有限公司 | Anchor-grouting type flexible anchor rod |
| CN111706374A (en) * | 2020-06-30 | 2020-09-25 | 河海大学 | Anchor head expansion resistance-increasing type drainable multistage yielding anchor rod |
-
2021
- 2021-10-12 CN CN202111186362.0A patent/CN113847074B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2994061A1 (en) * | 2016-11-25 | 2018-05-25 | China University Of Mining And Technology | Supporting method of an extensible reaming self-anchoring anchor rod |
| CN107939428A (en) * | 2017-12-29 | 2018-04-20 | 中天合创能源有限责任公司 | A kind of cable bolting system with impact resistance |
| CN111706374A (en) * | 2020-06-30 | 2020-09-25 | 河海大学 | Anchor head expansion resistance-increasing type drainable multistage yielding anchor rod |
| CN111706375A (en) * | 2020-07-09 | 2020-09-25 | 安徽挚乾环保科技有限公司 | Anchor-grouting type flexible anchor rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113847074A (en) | 2021-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11041385B2 (en) | Mining hydraulic constant-resistance deforming and automatic pressure relieving anchor rod and working method thereof | |
| US11187081B1 (en) | Self-anchored opposite-pulling anti-impact anchor cable for sectional coal pillars and using method thereof | |
| KR100879803B1 (en) | Waterproof structure and constructing method of the same | |
| CN104374637B (en) | Water sealing device applied to hydraulic fracture experiment under high-temperature and high-pressure condition | |
| CN113847074B (en) | Self-tapping type drainage multistage abdication anchor rod for controlling large deformation of soft rock | |
| CN101845820A (en) | Sinking-assistant construction method for sinking sunk well | |
| US3658368A (en) | Drill rod structures | |
| WO2020143154A1 (en) | Anchor rod supporting method applying deforming energy-absorbing anchor ring for preventing anchor rod from being broken and ejected | |
| CN104966913B (en) | Sealing protection device for water immersed cable welded joints | |
| CN106894757A (en) | A kind of horizontal directional drill jetting type surges churn drilling tools | |
| FI3485144T3 (en) | Corrosion resistant yieldable bolt | |
| CN107255036B (en) | Self-resetting pressure-bearing shock-absorbing water stop piece and tunnel flexible joint | |
| CN204827352U (en) | Automatic carminative anchor rope slip casting hole sealing device | |
| Li | A practical problem with threaded rebar bolts in reinforcing largely deformed rock masses | |
| CN108756973B (en) | Split full-length anchoring flexible grouting anchor rod and grouting anchoring method | |
| CN113847075B (en) | Self-tapping type abdicating anchor rod for controlling large deformation of soft rock | |
| CN115559759A (en) | Deep lamellar surrounding rock large deformation active control method and device | |
| CN206109963U (en) | Anticorrosive saddle end part sealing device of multilayer with two locators | |
| CN1908336A (en) | Building anchor bolt | |
| CN201095850Y (en) | Multilevel heavy-load anchor bolt | |
| CN204646128U (en) | Wear-resistant heavy weight drill pipe | |
| CN212223864U (en) | Novel bird's nest formula slip casting anchor rope | |
| CN204551474U (en) | A kind of phase with vertical installation of deal pile | |
| CN214197668U (en) | Water pipeling for hydraulic engineering | |
| CN110925002A (en) | Resin-filled shear-resistant anchor rod and processing and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |