CN112780323A - Earthquake recoverable function anchor cable and application method thereof - Google Patents
Earthquake recoverable function anchor cable and application method thereof Download PDFInfo
- Publication number
- CN112780323A CN112780323A CN202110252462.2A CN202110252462A CN112780323A CN 112780323 A CN112780323 A CN 112780323A CN 202110252462 A CN202110252462 A CN 202110252462A CN 112780323 A CN112780323 A CN 112780323A
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- China
- Prior art keywords
- anchor cable
- segmented
- anchor
- bundle
- anchoring
- Prior art date
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- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000011435 rock Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 54
- 238000004873 anchoring Methods 0.000 claims description 36
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 230000008439 repair process Effects 0.000 claims description 21
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 239000003292 glue Substances 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 1
- 239000013521 mastic Substances 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 230000004075 alteration Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000009719 polyimide resin Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/025—Grouting with organic components, e.g. resin
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/028—Devices or accesories for injecting a grouting liquid in a bore-hole
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 relates to an anchor cable with a function capable of restoring earthquake and an application method thereof, which are applicable to the field of underground engineering support. The anchor cable solves the problems of anchor body fracture caused by shear dislocation of fractured rock mass after earthquake and anchor cable damage and corrosion caused by the fracture.
Description
Technical Field
The invention relates to an anchor cable with a function of seismic restorability and an application method thereof, which are suitable for the field of underground engineering support.
Background
With the rapid development of social economy, the scale of the national infrastructure is enlarged day by day, and the rock-soil anchoring technology is rapidly developed. The anchor cable is more and more commonly applied to engineering due to the flexibility and reliability of the anchor cable in the anchoring field, and the anchor cable technology is adopted to anchor the rock-soil mass, so that the rock-soil mass can be fully utilized, the strength of the rock-soil mass and the capability of maintaining self stability are exerted, the slope stability is improved, engineering materials can be saved, and remarkable economic effect is achieved.
However, in China, the area is frequently earthquake-caused, large landslides or roadway cave collapses caused by earthquakes, and the failure of an anchoring system is accompanied. A plurality of cracks exist in the natural rock mass, when an earthquake occurs, the cracked rock mass is subjected to diastrophism due to vibration, the anchoring agent is cracked and damaged, and even the anchor cable is corroded when groundwater contacts the anchor cable through the cracks, so that the anchoring performance of the anchor cable is reduced. It is therefore increasingly important to ensure the stability of anchor lines in high-intensity areas.
Disclosure of Invention
The invention aims to provide an anchor cable with a function of restoring earthquake and an application method thereof, and the anchor cable solves the problems of anchor body fracture caused by shear and dislocation of fractured rock mass after the earthquake and anchor cable damage and corrosion caused by the fracture rock mass.
The technical scheme of the invention is as follows: an anchor cable with a function capable of being restored to earthquake comprises an anchor cable bundle composed of a plurality of steel bundles, segmented vesicles of which the shells are made of brittle materials are arranged in an anchoring section of the anchor cable bundle at intervals along the axial direction, repair materials are contained in the segmented vesicles, and anchoring agents enabling the anchor cable bundle and the segmented vesicles to form a complex body are coated outside the anchor cable bundle and the segmented vesicles.
Furthermore, the end of the anchoring section of the anchor cable bundle is provided with an anchor head which is fixedly connected with the steel bundle, the other end of the anchor cable bundle is provided with a tray through which the steel bundle passes, and an anchorage device is arranged on the steel bundle and outside the tray.
Further, the repair material is a single-liquid adhesive material.
Further, the repair material level is AB glue, two cavities are arranged in the segmented vesicle side by side, and A glue and B glue are respectively filled in the two cavities.
Further, the repair material is a water-swelling material, or a combination of an adhesive material and a water-swelling material.
Further, the water-swellable material is a polyurethane resin material.
Further, a compression balloon is arranged in the segmented vesicle.
Further, the compression air bag is arranged at one end of the inner cavity of the segmented vesicle, or the compression air bag is arranged in the center of the segmented vesicle and is respectively provided with the repair materials at the upper side and the lower side of the compression air bag.
Further, the number of the segmented vesicles is not less than 5 or the length of each segmented vesicle is not more than 30 cm.
An application method of an anchor cable with a function of seismic restorability comprises the following steps:
(1) drilling anchor holes in a rock mass to be supported, wherein the diameter of each anchor hole is larger than that of each anchor cable bundle;
(2) after hole cleaning is finished, sequentially penetrating the steel bundles, and placing the segmented vesicles in the middle of an anchor cable bundle consisting of the steel bundles;
(3) anchoring the anchor rope bundle and the segmented vesicle complex in the anchor hole by using an anchoring agent, and forming an anchoring body after the anchoring agent is solidified;
(4) and tensioning and locking the outer anchoring end of the steel bundle through the tray and the anchorage device to finish the initial installation of the anchor cable.
Compared with the prior art, the invention has the following advantages: the anchor cable automatically flows out through the repair material contained in the section vesicle or flows out under the extrusion of the expansion material, and permeates into the broken anchor body and the cracks of the surrounding rock mass, so that the effect of bonding repair can be achieved, the anchor cable can play a role of supporting again, and the problems of anchor body breakage caused by shear dislocation of the cracked rock mass after the earthquake and anchor cable damage caused by the fracture are solved. Meanwhile, underground water and air are prevented from contacting the anchor cable to avoid corrosion, and the service life of the anchor cable is prolonged. The repair material can also flow out in sections to carry out multiple targeted repairs.
Drawings
FIG. 1 is a schematic longitudinal cross-sectional view of a first embodiment of an anchor cable with seismic restorable functions in accordance with the present invention;
FIG. 2 is a schematic cross-sectional view of another embodiment of a seismic restorable functional anchor cable of the present invention;
FIG. 3 is a schematic longitudinal section of the end balloon type segmented vesicle of the present invention;
FIG. 4 is a schematic longitudinal section of a central balloon-type segmented vesicle according to the present invention;
in the figure: 1-steel strand; 2-anchor head; 3-an anchorage device; 4-a tray; 5-an anchoring agent; 6-segmented vesicles; 7-a housing; 8-compressing the air bag; 9-repair material.
Detailed Description
In order to make the aforementioned features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below, but the present invention is not limited thereto.
Refer to fig. 1 to 4
An anchor cable with a function capable of being restored to earthquake comprises an anchor cable bundle consisting of a plurality of steel bundles 1, segmented vesicles 6 with shells 7 made of brittle materials are axially arranged in an anchoring section of the anchor cable bundle at intervals, a restoration material 9 is contained in the segmented vesicles, and an anchoring agent 5 enabling the anchor cable bundle and the segmented vesicles to form a complex is coated outside the anchor cable bundle and the segmented vesicles.
In this embodiment, the end of the anchoring section of the anchor rope bundle is provided with an anchor head 2 fixedly connected with the steel bundle, respectively, the other end of the anchor rope bundle is provided with a tray 3 for the steel bundle to pass through, respectively, and the steel bundle is provided with an anchorage device 3 outside the tray.
In this embodiment, the repair material is a single-liquid adhesive material or an AB adhesive. When the repair material adopts AB glue, two cavities are arranged in the segmented vesicle side by side, the two cavities are respectively filled with A glue and B glue, and after the segmented vesicle is extruded and broken, the A glue and the B glue are mixed to play roles of cementing and isolating water.
In this embodiment, the repair material is a water-swellable material, and the water-swellable material is a polyurethane material or the like. When the polyimide resin material meets water, a correlation reaction is generated, expansion is generated, and the polyimide resin material is pressed into a fracture area of the anchoring body and a rock body gap under the action of expansion pressure.
In this embodiment, the repair material may also be a combination of an adhesive material and a water-swellable material, and the water-swellable material is a polyurethane material or the like. When the water-swelling material swells after meeting water, the adhesive material is extruded into the fracture area of the anchoring body and the rock body gap, and the broken anchoring body is bonded by the adhesive material to play the anchoring role again and isolate underground water and air.
In this embodiment, a compression air bag (see fig. 3) is disposed at one end of the inner cavity of the segmented vesicle, and the compression air bag is abutted against the outer shell, so that after the segmented vesicle is locally damaged by being squeezed, the compression air bag expands to extrude the repair material.
In this embodiment, a compression airbag is disposed in the center of the inner cavity of the segmented vesicle, repair materials are disposed on the upper and lower sides of the compression airbag, and two ends of the compression airbag are respectively abutted to the outer shell (see fig. 4), so that after the segmented vesicle is locally damaged by extrusion, the compression airbag expands to extrude the repair materials.
In this embodiment, in order to ensure the repairing effect, the number of the segmented vesicles is not less than 5 or the length of each segmented vesicle is not more than 30 cm.
An application method of an anchor cable with a function of seismic restorability comprises the following steps:
(1) drilling anchor holes in a rock mass to be supported, wherein the diameter of each anchor hole is larger than that of each anchor cable bundle;
(2) after hole cleaning is finished, sequentially penetrating the steel bundles, and placing the segmented vesicles in the middle of an anchor cable bundle consisting of the steel bundles;
(3) anchoring the anchor rope bundle and the segmented vesicle complex in the anchor hole by using an anchoring agent, and forming an anchoring body after the anchoring agent is solidified;
(4) and tensioning and locking the outer anchoring end of the steel bundle through the tray and the anchorage device to finish the initial installation of the anchor cable.
The working principle of the anchor cable is as follows: when an earthquake occurs, the fractured rock mass is dislocated, so that the anchoring agent is cracked and damaged, the segmented vesicle is damaged, the repairing material contained in the segmented vesicle automatically or extruded by the expansion material flows out and permeates into the fractured anchoring body and the fractures of the surrounding rock mass, the bonding and repairing effects can be achieved, the anchor rope can exert the supporting effect again, meanwhile, underground water and air are prevented from contacting the anchor rope to avoid corrosion, and the service life of the anchor rope is prolonged. The repair material can also flow out in sections to carry out multiple targeted repairs.
It will be apparent to those skilled in the art that various modifications and variations can be made in the cable without departing from the spirit of the invention, and it is intended to cover all such modifications, alterations, substitutions and alterations without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An anchor cable with a function capable of being restored to earthquake is characterized by comprising an anchor cable bundle consisting of a plurality of steel bundles, segmented vesicles of which the shells are made of brittle materials are arranged in an anchoring section of the anchor cable bundle at intervals along the axial direction, a repairing material is contained in the segmented vesicles, and an anchoring agent enabling the anchor cable bundle and the segmented vesicles to form a complex body is coated outside the anchor cable bundle and the segmented vesicles.
2. The anchor cable with the earthquake recoverable function as claimed in claim 1, wherein the anchoring section end of the anchor cable bundle is provided with an anchor head fixedly connected with the steel bundle, the other end of the anchor cable bundle is provided with a tray for the steel bundle to pass through, and an anchorage device is arranged on the steel bundle and outside the tray.
3. The seismic recoverable function anchor cable of claim 1 or claim 2, wherein the repair material is a single-fluid mastic material.
4. The anchor cable with the function capable of restoring the earthquake as claimed in claim 1 or 2, wherein the repairing material is AB glue, two cavities which are arranged side by side are arranged in the segmented vesicle, and A glue and B glue are respectively filled in the two cavities.
5. The anchor cable of claim 1 or 2, wherein the repair material is a water-swellable material, or a combination of an adhesive material and a water-swellable material.
6. The anchor cable with the earthquake recoverable function as claimed in claim 5, wherein the water-swellable material is a polyurethane material.
7. The seismic recoverable function anchor rope of claim 1 or 2, wherein the segmented vesicle has a compression balloon disposed therein.
8. The anchor cable with the earthquake recoverable function as claimed in claim 7, wherein the compression air bag is arranged at one end of the inner cavity of the segmented vesicle, or the compression air bag is arranged at the center of the segmented vesicle and is respectively provided with the repair materials at the upper side and the lower side of the compression air bag.
9. The anchor cable with seismic recoverable functions of claim 7, wherein the number of the segmented vesicles is not less than 5 or the length of each segmented vesicle is not more than 30 cm.
10. An application method of the seismic recoverable function anchor cable of claim 2 or 8, comprising the following steps:
drilling anchor holes in a rock mass to be supported, wherein the diameter of each anchor hole is larger than that of each anchor cable bundle;
after hole cleaning is finished, sequentially penetrating the steel bundles, and placing the segmented vesicles in the middle of an anchor cable bundle consisting of the steel bundles;
anchoring the anchor rope bundle and the segmented vesicle complex in the anchor hole by using an anchoring agent, and forming an anchoring body after the anchoring agent is solidified;
and tensioning and locking the outer anchoring end of the steel bundle through the tray and the anchorage device to finish the initial installation of the anchor cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110252462.2A CN112780323A (en) | 2021-03-09 | 2021-03-09 | Earthquake recoverable function anchor cable and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110252462.2A CN112780323A (en) | 2021-03-09 | 2021-03-09 | Earthquake recoverable function anchor cable and application method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112780323A true CN112780323A (en) | 2021-05-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110252462.2A Pending CN112780323A (en) | 2021-03-09 | 2021-03-09 | Earthquake recoverable function anchor cable and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112780323A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892675A (en) * | 2022-05-30 | 2022-08-12 | 浙江文华建设项目管理有限公司 | Foundation pit supporting structure with foundation pit construction parameter measuring function |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4842063A (en) * | 1986-12-30 | 1989-06-27 | Coetzee John A | Anchoring method and capsule therefor |
| KR200351244Y1 (en) * | 2003-12-01 | 2004-05-31 | 이미자 | chemical anchor |
| CN103924588A (en) * | 2014-03-04 | 2014-07-16 | 中国矿业大学(北京) | Elastic anchor cable |
| CN205189912U (en) * | 2015-11-03 | 2016-04-27 | 山东科技大学 | Let in coordination and press anchor cable structure |
| CN105909286A (en) * | 2016-04-18 | 2016-08-31 | 东北大学 | Blot-inject support method based on deterioration inhibition principle |
| CN210049238U (en) * | 2019-03-21 | 2020-02-11 | 中建五局土木工程有限公司 | Capsule type expanded anchor rod with self-repairing function |
| CN110905572A (en) * | 2019-12-18 | 2020-03-24 | 河南理工大学 | Anchor cable constant-resistance device with breakage early warning function and installation method |
| CN214577113U (en) * | 2021-03-09 | 2021-11-02 | 福州大学 | Earthquake recoverable function anchor cable |
-
2021
- 2021-03-09 CN CN202110252462.2A patent/CN112780323A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4842063A (en) * | 1986-12-30 | 1989-06-27 | Coetzee John A | Anchoring method and capsule therefor |
| KR200351244Y1 (en) * | 2003-12-01 | 2004-05-31 | 이미자 | chemical anchor |
| CN103924588A (en) * | 2014-03-04 | 2014-07-16 | 中国矿业大学(北京) | Elastic anchor cable |
| CN205189912U (en) * | 2015-11-03 | 2016-04-27 | 山东科技大学 | Let in coordination and press anchor cable structure |
| CN105909286A (en) * | 2016-04-18 | 2016-08-31 | 东北大学 | Blot-inject support method based on deterioration inhibition principle |
| CN210049238U (en) * | 2019-03-21 | 2020-02-11 | 中建五局土木工程有限公司 | Capsule type expanded anchor rod with self-repairing function |
| CN110905572A (en) * | 2019-12-18 | 2020-03-24 | 河南理工大学 | Anchor cable constant-resistance device with breakage early warning function and installation method |
| CN214577113U (en) * | 2021-03-09 | 2021-11-02 | 福州大学 | Earthquake recoverable function anchor cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892675A (en) * | 2022-05-30 | 2022-08-12 | 浙江文华建设项目管理有限公司 | Foundation pit supporting structure with foundation pit construction parameter measuring function |
| CN114892675B (en) * | 2022-05-30 | 2024-03-26 | 文华工程咨询股份有限公司 | Foundation pit supporting structure with function of measuring foundation pit construction parameters |
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