LU502974B1 - Anchor rod and application method thereof - Google Patents
Anchor rod and application method thereof Download PDFInfo
- Publication number
- LU502974B1 LU502974B1 LU502974A LU502974A LU502974B1 LU 502974 B1 LU502974 B1 LU 502974B1 LU 502974 A LU502974 A LU 502974A LU 502974 A LU502974 A LU 502974A LU 502974 B1 LU502974 B1 LU 502974B1
- Authority
- LU
- Luxembourg
- Prior art keywords
- anchor rod
- hole
- rod body
- annular
- annular capsule
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000002775 capsule Substances 0.000 claims abstract description 60
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 229920000642 polymer Polymers 0.000 claims description 17
- 239000011440 grout Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000006004 Quartz sand Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000005204 segregation Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004873 anchoring Methods 0.000 abstract description 5
- 239000011435 rock Substances 0.000 description 8
- 239000004033 plastic Substances 0.000 description 7
- 239000002689 soil Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000011405 expansive cement Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
-
- 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
- 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
- E21D20/021—Grouting with inorganic components, e.g. cement
-
- 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)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Piles And Underground Anchors (AREA)
Abstract
Disclosed is an anchor rod and an application method thereof. The anchor rod comprises: one end of an anchor rod body is open, the other end is closed, and overflow holes are formed in the side wall of the anchor rod body; the closed end of the anchor rod body is limited in the hole; two packers are sleeved on the anchor rod body; each of the packers comprises an annular capsule with a grouting hole, and the annular capsule is sleeved on the anchor rod body; and the two annular capsules can be used for separating the hole into two annular sealing zones. In the present invention, the hollow anchor rod body and the packers are arranged, and the overflow holes are formed in the anchor rod body, so as to ensure that the bottom zone of the hole can be filled fully, and the anchoring effect of the anchor rod body can be improved; and since the two packers are arranged, the anchoring capability of the anchor rod body can be further improved, and therefore, the anchor rod body can maintain good axial tensile force.
Description
ANCHOR ROD AND APPLICATION METHOD THEREOF
LU502974
The present invention relates to the field of tunnel construction, and more particularly relates to an anchor rod and an application method thereof.
Due to the influence of own pressure of a covering layer and a surrounding rock plastic zone, part of mountain tunnels are deformed and damaged all the year round. Therefore, related personnel usually select an anchor rod as a supporting measure. However, the existing structure of the anchor rod cannot be reliably fixed with a soil body, cannot relieve and improve the damage to the surrounding rock plastic zone and has a limited prevention effect on tunnel deformation.
Therefore, how to provide an anchor rod and an application method thereof which can solve the above problems is a problem to be solved urgently by those skilled in the art.
In view of this, the present invention provides an anchor rod and an application method thereof.
In order to achieve the above purposes, the present invention adopts the following technical solution:
The anchor rod inserted into a hole comprises: an anchor rod body, wherein the interior of the anchor rod body is hollow, one end of the anchor rod body is open, and the other end is closed; overflow holes are formed in the side wall of the anchor rod body; and the closed end of the anchor rod body is limited in the hole; packers, wherein two packers are installed on the anchor rod body; each of the packers comprises an elastic annular capsule, a grouting hole is formed in the annular capsule, and the annular capsule is sleeved on the anchor rod body; the two annular capsules can be used for separating the hole into two annular sealing zones along the length direction of the anchor rod body; and the overflow holes are limited between the closed end of the anchor rod body and the annular capsule which is closest to the closed end of the anchor rod body.
It can be known from the above technical solution that, compared with the prior art, the present invention discloses and provides the anchor rod; in the present invention, the hollow anchor rod body and the packers are arranged, and the overflow holes are formed in the anchor rod body, so as to ensure that the bottom zone of the hole can be filled fully, and the anchoring effect of the anchor rod body can be improved; and since the two packers are arranged, the anchoring effect of the anchor rod body can be further improved, and therefore, the anchor rod body can maintain good axial tensile force.
Preferably, a plurality of overflow holes are formed, to ensure that expansive grout can penetrate through the overflow holes smoothly to the interior of the anchor rod body. LU502974
Preferably, each of the packers further comprises a casing pipe, and the casing pipe is coaxially fixed on the anchor rod body in a sleeving manner; the annular capsule is fixed on the outer side of the casing pipe in a sleeving manner; and the outer wall of the annular capsule can be closely abutted against the wall of the hole, so as to ensure that the annular capsule can be reliably fixed with the anchor rod body through the casing pipe.
Preferably, the anchor rod further comprises a grouting pipe |, a grouting pipe Il and a grouting pipe Ill; one end of the grouting pipe | is limited at the outer part of the hole, and the other end is communicated with the grouting hole in the annular capsule which is close to an orifice of the hole; one end of the grouting pipe Il is limited at the outer part of the hole, the other end thereof is limited between the bottom of the hole and the annular capsule which is closest to the bottom of the hole, and a hole is formed in the side wall of the grouting pipe Il and is communicated with the grouting hole in the annular capsule which is closest to the bottom of the hole; and one end of the grouting pipe lll is limited at the outer part of the hole, and the other end thereof is limited between the two annular capsules. By arranging the grouting pipe |, the grouting pipe II and the grouting pipe Ill, the reliable grouting for the hole and the annular capsules can be realized.
An application method of the anchor rod is provided. In the hole, a zone formed between the two adjacent annular capsules is a zone |, and a zone formed between the bottom of the hole and the annular capsule adjacent to the bottom of the hole is a zone Il. The method comprises the following steps: (1) drilling the hole in a working face and inserting the anchor rod body into the hole, wherein the length of the anchor rod body is greater than the depth of the hole, so as to ensure that the two annular capsules can be limited in the hole; (2) simultaneously pouring expansive grout into the annular capsule which is closest to the bottom of the hole and the zone Il, and stopping pouring the expansive grout when the outer wall of the annular capsule which is closest to the bottom of the hole is closely abutted against the wall of the hole, and the expansive grout penetrates through the overflow holes and flows out of the open end of the anchor rod body; (3) pouring a high polymer foundation material into the annular capsule which is closest to the orifice of the hole; and (4) pouring the high polymer foundation material into the zone |.
Preferably, the high polymer foundation material is formed by mixing water, cement, quartz sand, polymer water soluble rubber powder, a water reducing agent, an early strength agent, an expansive agent and an anti-segregation agent. Through the above arrangement, the anchorage performance of the anchor rod and the hole can be improved, and geological conditions at the orifice of the hole can be reinforced.
It can be known from the above technical solution that, compared with the prior art, the present invention discloses and provides the application method of the anchor rod; through 502974 combination with the anchor rod body fixed with the two packers, by sequentially pouring the expansive grout and the high polymer foundation material into the hole, the anchor rod body in the present invention can be reliably anchored in the hole, the bottom zone of the hole can be ensured to be filled fully, and the filling effect is improved; and when the geology at the orifice of the hole is not stable, the high polymer foundation material can stabilize the geology at the position and prevent the geology at the position from being damaged further, so that the anchor rod body can maintain the good axial tensile force for a long time and may not be influenced by the environment.
To more clearly describe the technical solutions in the embodiments of the present invention or in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be simply presented below. Apparently, the drawings in the following description are merely the embodiments of the present invention, and for those ordinary skilled in the art, other drawings can also be obtained according to the provided drawings without contributing creative labour.
Fig. 1 is a schematic diagram of arrangement of an anchor rod in a hole.
In the drawing: 1 anchor rod body; 10 overflow hole; 2 annular capsule; 3 casing pipe; 4 grouting pipe |; 5 grouting pipe Il; 6 grouting pipe Ill; 7 surrounding rock plastic zone; and 8 stabilized soil layer.
The technical solutions in the embodiments of the present invention will be clearly and fully described below. Apparently, the described embodiments are merely part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those ordinary skilled in the art without contributing creative labour will belong to the protection scope of the present invention.
The present invention discloses an anchor rod and an application method thereof. In the present invention, a hollow anchor rod body 1 and packers are arranged, and overflow holes 10 are formed in the anchor rod body 1, so that the bottom zone of a hole can be ensured to be filled fully; and since expansive grout is adopted, and the expansive grout expands when in hardening, the full filling is realized further, and the anchor rod body 1 can be reliably anchored in the hole.
Since the two packers are arranged, on the one hand, the anchor rod body 1 can be ensured to be reliably anchored in the hole; and on the other hand, when the geology at an orifice of the hole is not stable, a high polymer foundation material can stabilize the geology at the position and prevent the geology at the position from being damaged further, so that the anchor rod body 1 can maintain the good axial tensile force for a long time and may not be influenced by the 502974 environment.
Fig. 1 is an overall and partial structural schematic diagram of an implementation manner of the present invention. The present invention specifically discloses an anchor rod inserted into a hole; the hole here can be drilled in the inner wall of a tunnel; the inner wall of the tunnel mainly comprises two layers of zones from outside to inside; the outmost layer is a surrounding rock plastic zone 7, and the innermost layer is a stabilized soil layer 8. The anchor rod comprises: an anchor rod body 1, wherein the interior of the anchor rod body 1 is hollow, one end of the anchor rod body 1 is open, and the other end is closed; a plurality of overflow holes 10 are formed in the side wall of the anchor rod body 1; and the closed end of the anchor rod body 1 is limited in the hole; packers, wherein the two packers are installed on the anchor rod body 1; one packer is close to an orifice of the hole, the other packer is arranged at the junction of the surrounding rock plastic zone 7 and the stabilized soil layer 8, and the specific positions of the two packers are determined, and core drilling needs to be carried out in the inner wall of the tunnel in advance, and the length of the anchor rod and the specific positions of the two packers relative to the anchor rod body 1 can be determined by a rock core sample. Each of the packers comprises an elastic annular capsule 2, the annular capsule 2 in the embodiment is a leather capsule, and the annular capsule 2 is hollow and elastic; a grouting hole is formed in the annular capsule 2, and the annular capsule 2 is sleeved on the anchor rod body 1; the two annular capsules 2 can be used for separating the hole into two annular sealing zones along the length direction of the anchor rod body 1; and the overflow holes 10 are limited between the closed end of the anchor rod body 1 and the annular capsule 2 which is closest to the closed end of the anchor rod body 1.
Further, specifically, each of the packers further comprises a casing pipe 3, and the casing pipe 3 is coaxially fixed on the anchor rod body 1 in a sleeving manner; the annular capsule 2 is fixed on the outer side of the casing pipe 3 in a sleeving manner; and the outer wall of the annular capsule 2 can be closely abutted against the wall of the hole.
Further, specifically, the anchor rod further comprises a grouting pipe 14, a grouting pipe II 5 and a grouting pipe lll 6; one end of the grouting pipe 14 is limited at the outer part of the hole, and the other end is communicated with the grouting hole in the annular capsule 2 which is close to the orifice of the hole; one end of the grouting pipe Il 5 is limited at the outer part of the hole, the other end thereof is limited between the bottom of the hole and the annular capsule 2 which is closest to the bottom of the hole, and a hole is formed in the side wall of the grouting pipe II 5 and is communicated with the grouting hole in the annular capsule 2 which is closest to the bottom of the hole; and one end of the grouting pipe Ill 6 is limited at the outer part of the hole, and the other end thereof is limited between the two annular capsules 2.
In the hole, a zone formed between the two adjacent annular capsules 2 is a zone |, anda 502974 zone formed between the bottom of the hole and the annular capsule 2 adjacent to the bottom of the hole is a zone Il. The application method of the anchor rod comprises the following steps: (1) drilling the hole in a working face and inserting the anchor rod body 1 into the hole, 5 wherein the length of the anchor rod body 1 is greater than the depth of the hole, so as to ensure that the two annular capsules 2 can be limited in the hole; (2) simultaneously pouring expansive grout into the annular capsule 2 which is closest to the bottom of the hole and the zone 2 through the grouting pipe II5, and stopping pouring the expansive grout when the outer wall of the annular capsule 2 which is closest to the bottom of the hole is closely abutted against the wall of the hole, and the expansive grout penetrates through the overflow holes 10 and flows out of the open end of the anchor rod body 1; (3) pouring a high polymer foundation material into the annular capsule 2 which is closest to the orifice of the hole through the grouting pipe 14; and (4) pouring the high polymer foundation material into the zone | through the grouting pipe 1116.
The high polymer foundation material in the embodiment is formed by mixing water, cement, quartz sand, polymer water soluble rubber powder, a water reducing agent, an early strength agent, an expansive agent and an anti-segregation agent.
The expansive grout in the embodiment is formed by mixing expansive cement, quartz sand and water.
The expansive grout is filled in the zone || corresponding to the stabilized soil layer 8, the expansive grout expands when in hardening, and the packers are matched to closely seal the hole, so as to ensure that the anchor rod body 1 corresponding to the position of the zone Il can be reliably anchored with the stabilized soil layer 8; and the high polymer foundation material is filled in the zone | corresponding to the surrounding rock plastic zone 7, and the high polymer foundation material can further reinforce the surrounding rock plastic zone 7, so as to improve the overall anchoring effect.
Each embodiment in the description is described in a progressive way. The difference of each embodiment from each other is the focus of explanation. The same and similar parts among all of the embodiments can be referred to each other.
The above description of the disclosed embodiments enables those skilled in the art to realize or use the present invention. Many modifications to these embodiments will be apparent to those skilled in the art. The general principle defined herein can be realized in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principle and novel features disclosed herein.
Claims (6)
1. An anchor rod, inserted into a hole, comprising: — an anchor rod body (1), wherein — the interior of the anchor rod body (1) is hollow, — one end of the anchor rod body is open, and the other end is closed; — overflow holes (10) are formed in the side wall of the anchor rod body (1); and — the closed end of the anchor rod body (1) is limited in the hole; — packers, wherein — two packers are installed on the anchor rod body (1); — each of the packers comprises an elastic annular capsule (2), — a grouting hole is formed in the annular capsule (2), and — the annular capsule (2) is sleeved on the anchor rod body (1); — the two annular capsules (2) can be used for separating the hole into two annular sealing zones along the length direction of the anchor rod body (1); and — the overflow holes (10) are limited between the closed end of the anchor rod body (1) and the annular capsule (2) which is closest to the closed end of the anchor rod body (1).
2. The anchor rod according to claim 1, wherein a plurality of overflow holes (10) are formed.
3. The anchor rod according to claim 1, wherein — each of the packers further comprises a casing pipe (3), and the casing pipe (3) is coaxially fixed on the anchor rod body (1) in a sleeving manner, — the annular capsule (2) is fixed on the outer side of the casing pipe (3) in a sleeving manner; and — the outer wall of the annular capsule (2) can be closely abutted against the wall of the hole.
4. The anchor rod according to claim 1, further comprising a grouting pipe 1(4), a grouting pipe [1(5) and a grouting pipe IIl(6), wherein — one end of the grouting pipe |(4) is limited at the outer part of the hole, and the other end is communicated with the grouting hole in the annular capsule (2) which is close to an orifice of the hole; — one end of the grouting pipe Il(5) is limited at the outer part of the hole, the other end thereof is limited between the bottom of the hole and the annular capsule (2) which is closest to the bottom of the hole, and
— ahole is formed in the side wall of the grouting pipe |l(5) and is communicated with fe 502974 grouting hole in the annular capsule (2) which is closest to the bottom of the hole; and — one end of the grouting pipe Il1(6) is limited at the outer part of the hole, and the other end thereof is limited between the two annular capsules (2).
5. An application method of an anchor rod, using the anchor rod of any one of claims 1 - 4, wherein in the hole, a zone formed between the two adjacent annular capsules (2) is a zone , and a zone formed between the bottom of the hole and the annular capsule (2) adjacent to the bottom of the hole is a zone Il, and the method comprises the following steps: (1) drilling the hole in a working face and inserting the anchor rod body (1) into the hole, wherein the length of the anchor rod body (1) is greater than the depth of the hole, to ensure that the two annular capsules (2) can be limited in the hole; (2) simultaneously pouring expansive grout into the annular capsule (2) which is closest to the bottom of the hole and the zone Il, and stopping pouring the expansive grout when the outer wall of the annular capsule (2) which is closest to the bottom of the hole is closely abutted against the wall of the hole, and the expansive grout penetrates through the overflow holes (10) and flows out of the open end of the anchor rod body (1); (3) pouring a high polymer foundation material into the annular capsule (2) which is closest to the orifice of the hole; and (4) pouring the high polymer foundation material into the zone |.
6. The application method of the anchor rod according to claim 5, wherein the high polymer foundation material is formed by mixing water, cement, quartz sand, polymer water soluble rubber powder, a water reducing agent, an early strength agent, an expansive agent and an anti-segregation agent.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210826665.2A CN115163155A (en) | 2022-07-13 | 2022-07-13 | Anchor rod and application method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU502974B1 true LU502974B1 (en) | 2024-01-15 |
Family
ID=83492210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU502974A LU502974B1 (en) | 2022-07-13 | 2022-10-11 | Anchor rod and application method thereof |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN115163155A (en) |
| LU (1) | LU502974B1 (en) |
| WO (1) | WO2023240853A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114909164A (en) * | 2022-06-13 | 2022-08-16 | 中铁第四勘察设计院集团有限公司 | Self-locking type layered surrounding rock large-deformation control anchor rod and construction method thereof |
| CN117780298A (en) * | 2024-02-23 | 2024-03-29 | 太原理工大学 | Integrated hole sealing extraction device and method embedded with grouting channel and bag |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101000599B1 (en) * | 2009-05-28 | 2010-12-10 | 한국건설기술연구원 | Sealing packer for rock bolt filler, sealing method of rock bolt hole using such sealing packer, and constructing method of rock bolt |
| CN206874296U (en) * | 2017-06-06 | 2018-01-12 | 中铁建大桥工程局集团第四工程有限公司 | A kind of tunnel hollow bolt grouting device |
| CN109882223A (en) * | 2019-03-30 | 2019-06-14 | 付建辉 | The method for carrying out segmenting slip casting using grouting cable anchor |
| CN213508499U (en) * | 2020-09-18 | 2021-06-22 | 中铁隧道集团一处有限公司 | Narrow and small space upward formula full length bonding anchor rope downthehole segmentation of formula ends thick liquid structure |
| CN113738420A (en) * | 2021-09-07 | 2021-12-03 | 山西晋煤集团技术研究院有限责任公司 | Device and method for reinforcing difficult-to-anchor roadway bottom plate |
-
2022
- 2022-07-13 CN CN202210826665.2A patent/CN115163155A/en active Pending
- 2022-10-11 LU LU502974A patent/LU502974B1/en active
- 2022-10-11 WO PCT/CN2022/124565 patent/WO2023240853A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN115163155A (en) | 2022-10-11 |
| WO2023240853A1 (en) | 2023-12-21 |
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