CN115163155A - Anchor rod and application method thereof - Google Patents
Anchor rod and application method thereof Download PDFInfo
- Publication number
- CN115163155A CN115163155A CN202210826665.2A CN202210826665A CN115163155A CN 115163155 A CN115163155 A CN 115163155A CN 202210826665 A CN202210826665 A CN 202210826665A CN 115163155 A CN115163155 A CN 115163155A
- Authority
- CN
- China
- Prior art keywords
- hole
- anchor rod
- rod body
- annular
- grouting pipe
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 125000004122 cyclic group Chemical group 0.000 claims description 18
- 229920000642 polymer Polymers 0.000 claims description 17
- 239000004570 mortar (masonry) Substances 0.000 claims description 15
- 239000011435 rock Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 238000007569 slipcasting Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 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
- 239000004568 cement Substances 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 4
- 239000002775 capsule 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 4
- 230000007105 physical stamina Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 description 7
- 239000002689 soil Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 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
- 230000000750 progressive effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 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 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 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
Abstract
The invention discloses an anchor rod and an application method thereof, wherein the application method comprises the following steps: one end of the anchor rod body is open, the other end of the anchor rod body is closed, an overflow hole is formed in the side wall of the anchor rod body, and the closed end of the anchor rod body is limited in the hole; the anchor rod body is sleeved with two packers, the packers comprise annular bags provided with grouting holes, the annular bags are sleeved on the anchor rod body, and the two annular bags can divide the holes into two annular sealing areas. According to the invention, the hollow anchor rod body and the packer are arranged, the overflow hole is formed in the anchor rod body, and the arrangement ensures that the bottom area of the hole can be fully filled, so that the anchoring effect of the anchor rod body is improved; owing to set up two packers, this setting can further improve the anchoring ability of stock body for this physical stamina of stock keeps good axial tension.
Description
Technical Field
The invention relates to the field of tunnel construction, in particular to an anchor rod and an application method thereof.
Background
Under the influence of the covering layer and the pressure of the surrounding rock plastic area, part of mountain tunnels are in deformation damage all the year round. For this reason, the person in question will usually choose a bolt as a support measure. However, the structure of the existing anchor rod cannot be reliably fixed with the soil body, and meanwhile, the damage to the plastic region of the surrounding rock cannot be reduced and improved, so that the effect of preventing the tunnel from deforming is limited.
Therefore, how to provide a bolt and an application method thereof, which can overcome the above problems, is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides an anchor rod and an application method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
an anchor rod inserted into a hole, comprising:
the anchor rod body is hollow, one end of the anchor rod body is open, the other end of the anchor rod body is closed, an overflow hole is formed in the side wall of the anchor rod body, and the closed end of the anchor rod body is limited in the hole;
the packer, the packer is provided with two and all installs on the stock body, the packer is including having elastic cyclic annular bag, the slip casting hole has been seted up on the cyclic annular bag, cyclic annular bag suit is in on the stock body, two cyclic annular bag can with the hole is followed the length direction of stock body separates into two and is annular sealed area, the overflow hole is spacing the blind end of stock body is to being closest one of the blind end of stock body between the cyclic annular bag.
According to the technical scheme, compared with the prior art, the anchor rod is provided with the hollow anchor rod body and the packer, the overflow hole is formed in the anchor rod body, the arrangement ensures that the bottom area of the hole can be fully filled, and the anchoring effect of the anchor rod body is improved; owing to set up two packers, this setting can further improve the anchor effect of stock body for this physical stamina of stock keeps good axial tension.
Preferably, the overflow hole is provided in plurality. This arrangement ensures that the expansion mortar can smoothly flow through the overflow hole to the inside of the anchor body.
Preferably, the packer further comprises a sleeve, the sleeve is coaxially sleeved and fixed on the anchor rod body, the annular bag is sleeved and fixed on the outer side of the sleeve, and the outer wall of the annular bag can be tightly abutted to the hole wall of the hole. This arrangement ensures that the annular bladder can be reliably secured to the bolt body by the sleeve.
Preferably, the grouting device further comprises a first grouting pipe, a second grouting pipe and a third grouting pipe, wherein one end of the first grouting pipe is limited outside the hole, and the other end of the first grouting pipe is communicated with the grouting hole in the annular bag close to the hole opening of the hole; one end of the grouting pipe II is limited outside the hole, the other end of the grouting pipe II is limited between the bottom of the hole and one annular bag closest to the bottom of the hole, and the side wall of the grouting pipe II is provided with a hole and is communicated with the grouting hole on the annular bag closest to the bottom of the hole; and one end of the grouting pipe is limited outside the hole, and the other end of the grouting pipe is limited between the two annular bags. Through setting up slip casting pipe one, slip casting pipe two and slip casting pipe three, can realize the reliable slip casting to hole and cyclic annular bag.
A method for applying a rock bolt, wherein an area formed between two adjacent annular bags in the hole is an area I, and an area formed between the hole bottom of the hole and one annular bag adjacent to the hole bottom of the hole is an area II, the method comprises the following steps:
(1) drilling the hole on the working surface, inserting the anchor rod body into the hole, wherein the length of the anchor rod body is greater than the depth of the hole, and the two annular bags can be limited in the hole;
(2) filling expansion mortar into the annular bag closest to the bottom of the hole and the second area, wherein when the outer wall of the annular bag closest to the bottom of the hole is tightly abutted against the wall of the hole, and the expansion mortar passes through the overflow hole and flows out from the opening end of the anchor rod body, the filling of the expansion mortar is stopped;
(3) filling a high polymer foundation material into one of the annular bladders closest to the orifice of the hole;
(4) and filling the high polymer foundation material into the first area.
Preferably, the high polymer foundation material is prepared by mixing water, cement, quartz sand, high polymer water-soluble rubber powder, a water reducing agent, an early strength agent, an expanding agent and an anti-segregation agent. The setting can improve the anchoring performance of the anchor rod and the hole, and can strengthen the geological condition at the hole opening of the hole.
According to the technical scheme, compared with the prior art, the anchor rod application method is characterized in that the anchor rod body fixed with the two packers is combined, and the expansion mortar and the high polymer foundation material are sequentially filled into the hole, so that the anchor rod body can be reliably anchored in the hole, the bottom area of the hole can be fully filled, and the filling effect is improved; when the geology of the hole opening is unstable, the high polymer foundation material can stabilize the geology of the position and prevent the further damage of the geology of the position, so that the anchor rod body can keep good axial tension for a long time without being influenced by the environment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view of a bolt arrangement in a bore.
In the figure:
1 is an anchor rod body, 10 is an overflow hole, 2 is an annular bag, 3 is a sleeve, 4 is a grouting pipe I, 5 is a grouting pipe II, 6 is a grouting pipe III, 7 is a surrounding rock plastic area, and 8 is a stabilized soil layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention discloses an anchor rod and an application method thereof, wherein a hollow anchor rod body 1 and a packer are arranged, an overflow hole 10 is formed in the anchor rod body 1, the arrangement ensures that the bottom area of the hole can be fully filled, and because the adopted expanding mortar can expand when being hardened, the anchor rod body 1 can be reliably anchored in the hole while the full filling is further realized; due to the fact that the two packers are arranged, on one hand, the anchor rod body 1 can be reliably anchored in the hole, on the other hand, when the geology of the hole is unstable, the high polymer foundation material can stabilize the geology of the position and prevent the geology of the position from being further damaged, and the anchor rod body 1 can keep good axial tension for a long time and is not influenced by the environment.
Examples
Referring to the accompanying drawing 1, which is a schematic structural diagram of a whole and part of an embodiment of the present invention, the present invention specifically discloses an anchor rod inserted into a hole, where the hole can be drilled on an inner wall of a tunnel, the inner wall of the tunnel mainly has two layers of areas from outside to inside, the outermost layer is a surrounding rock plastic zone 7, and the innermost layer is a stabilized soil layer 8, the anchor rod includes:
the anchor rod comprises an anchor rod body 1, wherein the inside of the anchor rod body 1 is hollow, one end of the anchor rod body 1 is open, the other end of the anchor rod body 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 holes;
the two packers are arranged on the anchor rod body 1, one packer is close to the orifice of the hole, the other packer is arranged at the junction of the surrounding rock plastic area 7 and the stabilized soil layer 8, the specific positions of the two packers are determined, drilling and coring are required to be performed on 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 are determined through a rock core sample; the packer is including having elastic cyclic annular bag 2, and cyclic annular bag 2 in this embodiment is the leather bag, and 2 inside hollows in cyclic annular bag just have elasticity, have seted up the slip casting hole on the cyclic annular bag 2, and 2 suits of cyclic annular bag are on stock body 1, and two cyclic annular bags 2 can separate into two and be annular sealing area with the hole along stock body 1's length direction, and overflow hole 10 is spacing between stock body 1's blind end to a cyclic annular bag 2 that is closest to stock body 1's blind end.
Further specifically, the packer further comprises a sleeve 3, the sleeve 3 is coaxially sleeved and fixed on the anchor rod body 1, the outer side of the sleeve 3 is sleeved with the annular bag 2, and the outer wall of the annular bag 2 can be tightly abutted to the hole wall of the hole.
The device comprises a first grouting pipe 4, a second grouting pipe 5 and a third grouting pipe 6, wherein one end of the first grouting pipe 4 is limited outside a hole, and the other end of the first grouting pipe is communicated with a grouting hole on an annular bag 2 close to the hole of the hole; one end of the second grouting pipe 5 is limited outside the hole, the other end of the second grouting pipe is limited between the bottom of the hole and one annular bag 2 closest to the bottom of the hole, and the side wall of the second grouting pipe 5 is provided with a hole and is communicated with a grouting hole on the annular bag 2 closest to the bottom of the hole; one end of the grouting pipe III 6 is limited outside the hole, and the other end of the grouting pipe III is limited between the two annular bags 2.
In the hole, the area formed between two adjacent annular bags 2 is defined as an area I, the area formed between the bottom of the hole and one annular bag 2 adjacent to the bottom of the hole is defined as an area II, and the application method of the anchor rod is as follows:
(1) drilling a hole on a working surface, 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, and the two annular capsules 2 can be limited in the hole;
(2) filling expansion mortar into the annular bag 2 closest to the bottom of the hole and the area II through the second grouting pipe 5, and stopping filling the expansion mortar when the outer wall of the annular bag 2 closest to the bottom of the hole is tightly abutted to the wall of the hole and the expansion mortar passes through the overflow hole 10 and flows out from the open end of the anchor rod body 1;
(3) filling high polymer foundation materials into an annular bag 2 closest to the hole opening of the hole through a grouting pipe I4;
(4) and filling high polymer foundation materials into the first area through the third grouting pipe 6.
The high polymer foundation material in the embodiment is prepared by mixing water, cement, quartz sand, high polymer water-soluble rubber powder, a water reducing agent, an early strength agent, an expanding agent and an anti-segregation agent.
The expansion mortar in the embodiment is formed by mixing expansion cement, quartz sand and water.
Filling expansion mortar in a second area corresponding to the stabilized soil layer 8, wherein the expansion mortar can expand when being hardened, and then matching with a packer to tightly plug the hole, so that the anchor rod body 1 corresponding to the two areas can be reliably anchored with the stabilized soil layer 8; one kind is filling high polymer ground material in the region that corresponds with surrounding rock plastic zone 7, and high polymer ground material can further strengthen surrounding rock plastic zone 7, and then improves holistic anchor effect.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. An anchor rod inserted into a hole, comprising:
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 opened, the other end of the anchor rod body is closed, an overflow hole (10) is 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;
the packer, the packer is provided with two and all installs on stock body (1), the packer is including having elastic cyclic annular bag (2), the slip casting hole has been seted up on cyclic annular bag (2), cyclic annular bag (2) suit is in on stock body (1), two cyclic annular bag (2) can with the hole is followed the length direction of stock body (1) is separated into two and is annular sealed area, overflow hole (10) are spacing the blind end of stock body (1) is to being closest to one of the blind end of stock body (1) between cyclic annular bag (2).
2. A rock bolt according to claim 1, wherein the overflow aperture (10) is provided in plurality.
3. A rock bolt according to claim 1, wherein the packer further comprises a sleeve (3), the sleeve (3) is coaxially sleeved on the rock bolt body (1), the annular sac (2) is sleeved on the outer side of the sleeve (3), and the outer wall of the annular sac (2) can be tightly abutted with the wall of the hole.
4. A rock bolt according to claim 1, further comprising a first grouting pipe (4), a second grouting pipe (5) and a third grouting pipe (6), wherein one end of the first grouting pipe (4) is limited outside the hole, and the other end of the first grouting pipe is communicated with the grouting hole on one annular bag (2) close to the orifice of the hole; one end of the second grouting pipe (5) is limited outside the hole, the other end of the second grouting pipe is limited between the bottom of the hole and one annular bag (2) closest to the bottom of the hole, and an opening is formed in the side wall of the second grouting pipe (5) and is communicated with the grouting hole in the annular bag (2) closest to the bottom of the hole; one end of the grouting pipe III (6) is limited outside the hole, and the other end of the grouting pipe III is limited between the two annular bags (2).
5. A method of using a rock bolt according to any one of claims 1 to 4, characterised in that a rock bolt according to any one of claims 1 to 4 is used in which the region formed between two adjacent annular capsules (2) in the hole is region one and the region formed between the bottom of the hole and one of the annular capsules (2) adjacent to the bottom of the hole in the hole is region two, the method comprising:
(1) drilling the hole on the working surface, 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, and the two annular bags (2) can be limited in the hole;
(2) simultaneously filling expansion mortar into the annular bag (2) closest to the hole bottom of the hole and the second area, and stopping filling the expansion mortar when the outer wall of the annular bag (2) closest to the hole bottom of the hole is tightly abutted to the hole wall of the hole and the expansion mortar passes through the overflow hole (10) and flows out from the opening end of the anchor rod body (1);
(3) -filling one of said annular bladders (2) closest to the mouth of said hole with a high-polymer ground material;
(4) and filling the high polymer foundation material into the first area.
6. The application method of the anchor rod as claimed in claim 5, wherein the high polymer ground material is prepared by mixing water, cement, quartz sand, high polymer water-soluble rubber powder, a water reducing agent, an early strength agent, an expanding agent and an anti-segregation agent.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210826665.2A CN115163155A (en) | 2022-07-13 | 2022-07-13 | Anchor rod and application method thereof |
| LU502974A LU502974B1 (en) | 2022-07-13 | 2022-10-11 | Anchor rod and application method thereof |
| PCT/CN2022/124565 WO2023240853A1 (en) | 2022-07-13 | 2022-10-11 | Anchor rod and application method therefor |
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 |
|---|---|
| CN115163155A true CN115163155A (en) | 2022-10-11 |
Family
ID=83492210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210826665.2A Pending CN115163155A (en) | 2022-07-13 | 2022-07-13 | 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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
|---|---|
| LU502974B1 (en) | 2024-01-15 |
| WO2023240853A1 (en) | 2023-12-21 |
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